- Email: [email protected]
Summaries for card indexes
SUMMARIES
FOR
CARD
INDEXES
Use of basic dyes in the determination of anions, particularly as a means of determining antimony, thallium and gallium: A. G. Foot, C. BURGS and D. THORBURNBURNS, T&n@ 1971, 18, 1175 (Department of Chemistry, Loughborough University of Technology, Loughborough, Leicestershire.) Summary-The use of xanthene, triphenylmethane and other basic dye cations as reagents for the determination of anions is reviewed. Elements and anions determined include Sb, Tl, Ga, Au, Te, In, Zn, Ta, Hg, Re, Sn, U, OS, B, Cr, Ag, Clod-, PO,‘-, SOd8- and NO*-. Difficulties encountered in developing satisfactory procedures involving basic dyes are discussed. Procedures for the purification and analysis of basic dye samples are outlined.
A neutron-activation scheme developed for the determination of 42 elements in lunar material: A. 0. BRUNFEJLT and E. STEW, Tufantu, 1971, 18, 1197. Mineralogical-Geological Museum, University of Oslo, Oslo, Norway, and Institutt for Atomenergi, Isotope Laboratories, Kjeller, Norway.)
Summary--A neutron-activation scheme designed for the determination of 42 elements in lunar rocks and fines is described. The scheme is based on seven different irradiations, four of which are followed by direct y-spectrometry, and three by radiochemical separation systems. The total sample consumption for duplicate analysis is about 800 mg. The scheme has been tested on basalt BCR-I, and results for this standard rock are presented. Analytical experience obtained from analyses of lunar samples and BCR-1 is discussed.
Electrochemical behavionr of alumiaium@I) and beryllium(II) perchlorates in dimetbylformamide: M. GALOVA and D. A. PANTONY, Tuluntu, 1971, 18, 1209. (Department of Analytical Chemistry, Technical University, Svermova 3, Kosice, Czechoslovakia, and Department of Metallurgy, Imperial College of Science and Technology, London, S.W.7, U.K.). Summary-Well defined voltammetric peaks of Al(II1) and Be0 were obtained in DMF at the HMDE. and the nature of the electrochemical process in this medium was investigated. Adsorption and chemical reaction coupled with the charge transfer were observed in both cases. The optimum depolarizer concentration and scan-rate for analytical determination were established. Close similarities were found in the electrochemical behaviour of A&III) and Be@), and differences were in degree rather than of kind. ix
AHHOTaquki
c’raseti
BCHOJIb30BAHME OCHOBHbIX ECPACHTEJIEM JJJIH OlIPEAEJIEHMfi AHLIOHOB, B gACTHOCTkl AJIII OHPEAEJIEHWJ CYPbMbI, TAJIJIHH I/I rAJIJIklH: A. G. FOGG, C. BURGJW and D. THORBURNBURNS, Talantu, 1971, l&1175. P03IOM0--npuBeJ(eH 0680~ uCIIOJIb3OBaKuFI KaTuOHOB KpaCuTeneti KCaHTeHOBOrO, TpH'+eHuJIMeTaHOBOrO
OCHOBHbIX u KpyI'UX ~HHEIOHOB.
HJfaccoB B KarIecTBe pearemoB am onpenenemm Onpe~enumhre aneMeHTbI u amom BKmmamT Sb, Tl, Ga, Au, Te, In, Zn, Ta, Hg, Re, Sn, U, OS, B, Cr, Ag, CIO1-, PO1*-, SO,*- u NO,-. O6cymAeHbI npo6nesm paapa6oTKu yflosnemopIlTeJIbHbIX MeTOJJOB OCHOBaKHbIX Ha uCnOJlb3OBaHuu KpacuTeneti. Hpuse~erm MeTonM 0guc~Ku 0 aHam3a
OCHOBHbIX ~CH~BH~IX
Kpacmeneti.
CXEMA OIIPEJJEJIEHHH 42 BJIEMEHTOB B JIYHAPHbIX MATEPHAJIAX METOAOM HEtilTPOHHO-AKTklBAqMOHHOrO AHAJII13A: A.O.
BRUNFELT
and E.
STEINNES, Tukzntu, 1971,18,
1197.
P0imW---Pa~pa6OT~a
CXeMa HeiTpOHHO-aKTuBaquOHHOr0 aHaJIu3a J(JlFlOlIpe~eJleHuH 42 3JleMeHTOB B JIyHapHblX rOpHblX IIOpOAaX u MeJlO=iu. CXeMa OCHOBaHa Ha CeMb pa3JiWiHblX o6nysemax, geTbIpe u3 KOTOpMX C HelIOCpeACTBeHHOi yCIIeKTpOMeTpuefi,aTpu-uCIIOJIb3yIOJQuXCuCTeMbl pa~HOXHMHW3cKor0 paa~eneam. 06rqee KOJIu4eCTBO npo6~ Tpe6yeMoe AJIH IlOBTOpHOrO aHaJlu3a paBH0 800 Mr. Cxeisa UcnmaHa Ha 6a3aJIbTe BCR-1 u npuseiqemx peaynmam nojrysemme Ha aToti 3TaJIOHHOti rOpHOti IIOpOAe. 06CymAeH OIIbIT IIOJIyseHHbIZt B
manuae
nyHapHbIx o6paaqeB u BCR-1.
3JIEKTPOXBMWIECKBE XAPAKTEPBCTIWB IIEPXJIOPATOB AJIIOMHH5IFI(III) EI: BEPEIJIJIEIH(II1) B JJBMETBJI@OPMAMHJJE: M. GALQVAand D. A. PANTONY, Taluntu, 1971, l&1209. Pe3IOMe--nOJIy=ieHbl XOpOLUO u306pameHHbIe BOJIbTaMIIepOMeTpusecKue nuKu Al(III)u Be(II1) B AM@ Ha 3JreKTpoAe B @opMe Bucwfefi PTYTHO~ Kanmi u uayneHa npupoga aneKTpoxmuqecKoro npoqecca B aToi cpeae. AHcopBgurr u XuMmecKan peaKqus,
conpmt&HbIe c IIepeHocoM aapsaa, 06HapymeHbI B 06oux cnysaHx. OnpeAeJTeHn OnTUManbHaH KOHJJeHTpaIJURAenOJIapUaaTopa u 0nTuManbHaK cKopocTb nepehteHbI noTeHquana em 3JIeKTpOXuMu~eCKUe XapaKTeaHamTmecKor0 0npeAeneKua. ~UCTHKU Al(II1) M Be(II1) BecbMa cxo)~u:eo~u paanusamcs TonbKo B wenew, He B xapaKTepe.
Summaries
for card indexes
fnkraction of coba& chloride with 2-~~1-~~~1 in a %:4 beozeue-othonol solution: VINCENZOCARUNC~O, ALWANDROBONWLI and MARIAANIDNIAFOGAROLI, Talunfu, 1971,18,1217. (Institute of Analytical Chemistry, University of Rome, Rome, Italy.) Summary-The cobalt(H) chloride2-nitroso-1-naphthol system has been studied spectrophotometrically in a 96:4 (v/v) benzene-ethanol solution. Two species have been found, the M :L complexation ratios quotients of the formaof which are 1: 1 and 1: 2. The inanition tion equilibria are & = 1.2 x lo* and K2 = 1.4 x 10’ respectively. The first step of the reaction is accompanied by a configurational change from a tetrahedral to an octahedral structure.
A catalytic method for the determination of cobalt impurities iu reactor cooling-water circuits: G. E. BATLEY, Tuhmz, 1971, 18, 1225. (Australian Atomic Energy Commission, Research Establishment, Lucas Heights, N.S.W., Australia.) Sum--Metal impurities in reactor cooling-water circuits must be kept to a hum. A method is described for the devotion of trace levels of cobalt in water samples, based on catalysis of the hydrogen peroxide oxidation of Alizarin Red S. The determination is carried out at pH 11.0 in a phosphate buffer under conditions where the reaction rate is a maximum. Interfering impurities are removed by an ion-exchange separation. The method enables cobalt to be determined in water samples down to lo-‘ &ml, or 5 x IO-&,u&nl in samples where an ion-exchange separation is not required.
On the distribution coefecient of nickel dimethylglyoximate between aa aqueous solution and orgauic solveuts: S. OKI, Tduntu, 1971, IS, 1233. (Faculty of ensnaring, Shizuoka University, Hamamatsu, Japan.) Sumruary-The distribution coefficients of nickel dimethylglyoximate between an aqueous solution and 6 inert solvents were determined at 20°. The distribution coefficients of the nickel chelate were quantitatively interpreted in terms of solubility parameters. The solubility parameter for the nickel chelate was evaluated to be 12.9, that for the aqueous solution to be 18.6, and the molar volume of the chelate to be 182 mljmol.
Cation-exchrmge seporatioo and determination of silver in admixture! withmercnry(II): R. L. SHRIMAL,Tabztu, 1971,18,1235. (Department of Chemistry, Government Science College, Gwalior, India,) Suuuna~--Cation-exchange separation of silver from mercury(H), copper(H), cobalt(H), nickel and zinc, based on the differences in the stability constants of the complexes formed by these elements with EDTA at pH 4.6, is described. Silver is eluted with 16% nitric acid and is determined by Volhard’s method.
xi
xii
AmoTaum
maTei
B3AkIMOAEfiCTBBE XJIOPHAA HOBAJIbTA(J1) Id 2-HBTP030-I-HA@TOJIA B PACTBOPE BEH30JIABTAHOJIA 96: 4: VINCENZO CARUNCHIO, ALESSANDRO FOGAROLI, Talunra,1971,18,1217.
BONDOLI
and MARIA
ANTONIA
PeWMe--CElCTeMa COCTORILIaFICR MB XJIOpEIAa KO6aJIbTa(II) II %HKTpOE30-1-Ha$TOJla MsyYeHa CIleKTpO+OTOMeTpWieCKHM MeTOAOM B pacTBope 6eH3ona--3TaKona 96:4 no o6%eMy. O6HapymeHbI~BaKoMnneKca,oTHolueHae M:JI KOTO~~IX~~IZO~:~H~:~. YaCTHbIe KOHqeHTpaqHti paBHOBeCHOr0 o6paaoBafrzw paBHEJ I<, = 1,2 X 10' II K, = 1,4 X lo*, COOTBeTCTBeHHO. nepBbIti mar peaKqiui conpoBowAaeTcn cTpyK~yp~aM nepexoAoM 148 TeTpaEJApINeCKO~ B OKTaaApEl"eCKyIO (lOpMy.
KATAJIBTWIECKB~ METOQ OJIPEAEJIEHBR IIPUMECEm ECOBAJIbTA B BOAE 113 OXJIA~AAIOIIJIJX CIlCTEM PEAKTOPOB :
G. E. BATLEY, TaZu~~u,1971,18,1225. Pemnrc+-Hwo
CBOAIlTb Ha MHHElMyM UpIlMeCEfMeTaJlJlOBB BOAe OXJIa~AaJOIQHX CElCTeM peaKTOpOB. OlTkiCaH MeTOn OIIpefieJIeHHR CJleAOBbIXKOJlH'IeCTBKO6aJlbTaB BOAe,OCHOBaHHbItiHaKaTaJIL13e OKEiCJIeHIlRaJIElBapIlHOBOr0KpaCHOl'O S IIepeKHCbIO BOAOpOAa. OnpeAeneHHe II~OBOAHTCH np~i pH 11,0 B pacTBope @OC+aTHoro By#jepa Upa YCJIOBHFIX COOTBeTCByIO~IlX MHHIlMyMy CKOpOCTH peaKuHn. MeuraIomHe IlpHMeCH OTCTpaHRIOT MOH006MeHHbIM MeTOn II03BOLU4eT OIlpeAeJViTb KO6aJIbT B npo6ax MeTOAOM. BOAbI BllJlOTbA0 lO-4 MKI'/MJIMJlllBIIJlOTbA0 5 X lo-' MKr/MJI B npo6axHe 1labICKy10~MxHoH006MeHHOe paaAejreaae.
0 K03WWi~BEHTE PACHPEjJEJIEHBH AIJMETBJII’JIBOHCBMATA HklKEJIFI MEXAY BOAHbIM PACTBOPOM Iii OPI’AHM9ECKtiMki PACTBOPBTEJIFIMB: S. OKI, Tuluntu, 1971,18,1233. Peaww-OnpeAeneKbI npsi 20' Koa@JqaeHTbI pacnpeAeneHKH AIlMeTElJIlVlHOKCHMaTaHUKeJlR Me?KAy BOAHMM paCTBOpOM II 6 HHepTHbIMH paCTBOpl4TeJIfiMH. Koa@@nqHeKTbI pacnpeAeneKnR XeJiaTa HEIKeJIH KOJIWIeCTBeHHO IIpOTOJIKOBaHbIC T09KEI apeHEiR KapaMeTp pacTBopmIlapaMeTpOB paCTBOpEIMOCTEi. PaccwTaH MOCTH XeJIaTa HIlKeJlfI 12,9, BOAHOrO paCTBOpa -l&6, a MOJIHpHbl& o6'beM XeJlaTa -182 MJI/MOJlb.
OTAEJIEHElE KATElOHHOI’O
CEPEBPA OBMEHA
OT PTYTH(I1) METOAOM II EI’O OlIPEAEJIEHIJE:
R. L. SHRIMAL, Tulantu, 1971,18,1235. Pesmm-OnmcaHo OTAeneme cepe6pa OT PTYTH(II), MeJui(II), KOGaJIbTa(II), HHKeJlH II qHHKa MeTOAOM KaTHOHHOrO 06MeHa, OCHOBaHHOM Ha paaHIlUe KOHCTaHT yCTOi%iBOCTIl KOMIlJleKCOB, o6pa3ymwaxca c 3ATA npw pH 4,6. Cepe6po enmnpym 16 % THOfh a3OTHOii KllCJlOTOiIIOIlpeJJenHIIoTMeTOAOMBonbxapaa.
Summaries
for card indexes
Dosage quantltatif des substances tensioactlves par &etroadsorptlon: E. VERDIER,J. Pmo and F. GARCIA MONTELONCO, Tulunta, 1971,18, 1237. (Equipe polarographique no 61, Faculte des Sciences, 34 Montpellier, France, and Catedra de quimica analitica, Escuela de Ingenieria Tech&a-Industrial, Las Palmas de Gran Canaria, Espagne). Summary_--A method for the quantitative determination of cationic and non-ionic surfactants which is based on their inhibiting effect on certain electrochemical reactions has been developed. This technique enables one to determine, with a precision of 2-3 %, these substances at concentrations of the order of 10-OM.
Determiaation of tboria ia thorium ores by an emission spectrographic method: N. C. KOTHARI, Tuluntu, 1971, 18, 1242. (Department of Engineering, James Cook University of North Queensland, Townsville, Queensland, Australia.) Summary_-The emission spectrograph is used to determine thoria in monazite sand. A sample of only 15 mg is required and yields rapid and accurate results for 2 % thoria or less. Of various additives tested as carriers, carbon and MOO, were found to be best. A current of 6 A gave a proper rate of volatilization without excessive spattering. The 267.28 nm MO line was used as internal standard and the 269.24 nm Th line for analysis. Silica and iron sulphide were used as matrix in synthetic samples. Results compared well with those obtained by wet-analysis.
Spectropbotometric determination of rotbeniam with dipbenyltbioviohric acid: R. S. CHAWLA,R. P. SINGHand K. C. TRIKHA,Tuluntu, 1971,18, 1245. (Department of Chemistry, University of Delhi, Delhi-7, and A.R.S.D. College, New Delhi, India.) Surn~-Diphenylthiovioluric acid (DPHTVA) reacts with ruthenium(W) to form a complex which has an absorbance maximum at 520 run. Effects of pH, heating time, buffer and reagent have been studied. DPHTVA has been found to be a sensitive reagent for ruthenium(II1) (sensitivity = 0.0044 ,!6g Ru/cm* for log &/Z = O.OOl), and has been made selective by the use of masking agents. The composition of the complex as revealed by different methods is 1:2 (ruthenium : DPHTVA).
...
XIII
xiv
AHxoTaqHH
cTaTeZt
KOJIWIECTBEHHOE OIIPEJJEJIEHHE IIOBEPXHOCTHO-AKTHBHbIX BEIIJECTB METOAOM WIEKTPOAACOPB~BB: E. VERDIER,J. PJROand F. GARCIAMONTELQNW, Tahta, 1237.
1971, 18,
Peamm+-PaspaBowm MeTon Hom~ecTBemoro onpe~enemiff KaTElOHHkJX S.i HeHOHOreHHblX UOBepXHOCTHO-aKTKBHblX BeJIJeCTB, OCHOBaHHbIfi Ha EIX HHrK6HpyH)aeM AetiCTBHli Ha HeKOTOpbIe aneKTpoxuMnPecKue peaKqKu. 3~0T MeTog noaBonHeT oupeAeJIflTbBTH BeqeCTBa tlpK KOHJJeHTpaqHFm 10-'&f C TO¶HOCTbH) 23%.
OHPEAEJIEHHE OKMCM TOPBH CI-IEKTPOI’PA@WIECKBM
B PYAAX METOAOM:
TOPBH
N. C. KOTHARI, Talanta, 1971,18,1242. PeWOM+-3MtfCCHOHHbIIt ClIeKTpOrpa$l EICD[OJIbk?OBaJfl RJIH OlIpeneJIeHUFI OKHCH TOpHH B MOHaJJHTHOM IIeCKe. MeToR Tpe6yeT TOnbKO 16 Mr npo6u H IIOBBOJIHeTnOJIyuaTb 6bIcTpbIeEITOYHbIe peByJIbTaTbI JJJIHMeHbJIIe WM 2% OKHCkI TOpHR. &I HClIbITaHHbEC HOCEiTeJIefi yrOJIb El MOO, RaJIH CaMbIe JIysnIHe pesynbTaTbI. nOJ&XO~a~aH CKOpOCTb yJleTyWiB~MJ3 UOJlyqeHa TOHOM 6,6esspesMepHOrO 06pbI8rHBaHHH. ~kfHK~ClIeKTpa267,28 HM MO UCUOJIbBOBaHa B KaYeCTBe BHyTpeHHOrO aTaJlOHa, a JlliHKR 269,24 HM Th--Am aHanma. AByOKMCb KpeMKwz EI cynb@q HteJIeaa HCIIOJIb8OBaHbIB KaYeCTBe MaTpIlqbI B HCKyCCTBeHHbIX npo6ax. PeByJIbTaTbI xopon~o COrJIarIIaxoTCFI c peayJIbTaTahn¶, IlOJly9eHFibIMEi XIIMli¶eCKElMMeTOJJOM.
CI-IEKTPOQOTOMETPWIECKOE OIIPEAEJIEHBE PYTEHMH AI@DEHIUITI~OBIJIOJIYPOBO~ KEICJIOTOB: R. S. CHAWLA, R. P. SINGH and K. C. TRIKHA,Talanta, 1971,18,1245. PeaIome-AEl~eHElnTnosHonypoBa~ KHCnOTa (A0TBK) pearHpyeT C pyTeHHeM(II1) o6paayR KOMIUIeKC, MaKCHMyM CBeTOnorxom(eHm KoToporo neHtaeT npsi 620 HM. HayueHo BnnfiHHe pH, npo~on~~TenbHocTn HarpeBaHIwI, 6y$@epa H peareaTa. JJ@TBK KpeAcTaBnaeT co608 syBCTBHTenbHbIl peareHT &TIR pyTeHEIH(III)-=iyBCTBYITeJIbHOCTb paBHa 0,0044 MKr RU/CM~ AJI~ Q lo/1 = 0,001; ero m6HpaTenbHocTb rroBbmaeTcR: mnonbBnpa6oTaHrmti pasnmBOBaHEieM MaCKHpyIOIIJHX areHTOB. HbIMH MeTOAaMH COCTaB KOMnJIeKCa 1:2 (pyTeHHti:ADTBK).
FOR
CARD
INDEXES
Use of basic dyes in the determination of anions, particularly as a means of determining antimony, thallium and gallium: A. G. Foot, C. BURGS and D. THORBURNBURNS, T&n@ 1971, 18, 1175 (Department of Chemistry, Loughborough University of Technology, Loughborough, Leicestershire.) Summary-The use of xanthene, triphenylmethane and other basic dye cations as reagents for the determination of anions is reviewed. Elements and anions determined include Sb, Tl, Ga, Au, Te, In, Zn, Ta, Hg, Re, Sn, U, OS, B, Cr, Ag, Clod-, PO,‘-, SOd8- and NO*-. Difficulties encountered in developing satisfactory procedures involving basic dyes are discussed. Procedures for the purification and analysis of basic dye samples are outlined.
A neutron-activation scheme developed for the determination of 42 elements in lunar material: A. 0. BRUNFEJLT and E. STEW, Tufantu, 1971, 18, 1197. Mineralogical-Geological Museum, University of Oslo, Oslo, Norway, and Institutt for Atomenergi, Isotope Laboratories, Kjeller, Norway.)
Summary--A neutron-activation scheme designed for the determination of 42 elements in lunar rocks and fines is described. The scheme is based on seven different irradiations, four of which are followed by direct y-spectrometry, and three by radiochemical separation systems. The total sample consumption for duplicate analysis is about 800 mg. The scheme has been tested on basalt BCR-I, and results for this standard rock are presented. Analytical experience obtained from analyses of lunar samples and BCR-1 is discussed.
Electrochemical behavionr of alumiaium@I) and beryllium(II) perchlorates in dimetbylformamide: M. GALOVA and D. A. PANTONY, Tuluntu, 1971, 18, 1209. (Department of Analytical Chemistry, Technical University, Svermova 3, Kosice, Czechoslovakia, and Department of Metallurgy, Imperial College of Science and Technology, London, S.W.7, U.K.). Summary-Well defined voltammetric peaks of Al(II1) and Be0 were obtained in DMF at the HMDE. and the nature of the electrochemical process in this medium was investigated. Adsorption and chemical reaction coupled with the charge transfer were observed in both cases. The optimum depolarizer concentration and scan-rate for analytical determination were established. Close similarities were found in the electrochemical behaviour of A&III) and Be@), and differences were in degree rather than of kind. ix
AHHOTaquki
c’raseti
BCHOJIb30BAHME OCHOBHbIX ECPACHTEJIEM JJJIH OlIPEAEJIEHMfi AHLIOHOB, B gACTHOCTkl AJIII OHPEAEJIEHWJ CYPbMbI, TAJIJIHH I/I rAJIJIklH: A. G. FOGG, C. BURGJW and D. THORBURNBURNS, Talantu, 1971, l&1175. P03IOM0--npuBeJ(eH 0680~ uCIIOJIb3OBaKuFI KaTuOHOB KpaCuTeneti KCaHTeHOBOrO, TpH'+eHuJIMeTaHOBOrO
OCHOBHbIX u KpyI'UX ~HHEIOHOB.
HJfaccoB B KarIecTBe pearemoB am onpenenemm Onpe~enumhre aneMeHTbI u amom BKmmamT Sb, Tl, Ga, Au, Te, In, Zn, Ta, Hg, Re, Sn, U, OS, B, Cr, Ag, CIO1-, PO1*-, SO,*- u NO,-. O6cymAeHbI npo6nesm paapa6oTKu yflosnemopIlTeJIbHbIX MeTOJJOB OCHOBaKHbIX Ha uCnOJlb3OBaHuu KpacuTeneti. Hpuse~erm MeTonM 0guc~Ku 0 aHam3a
OCHOBHbIX ~CH~BH~IX
Kpacmeneti.
CXEMA OIIPEJJEJIEHHH 42 BJIEMEHTOB B JIYHAPHbIX MATEPHAJIAX METOAOM HEtilTPOHHO-AKTklBAqMOHHOrO AHAJII13A: A.O.
BRUNFELT
and E.
STEINNES, Tukzntu, 1971,18,
1197.
P0imW---Pa~pa6OT~a
CXeMa HeiTpOHHO-aKTuBaquOHHOr0 aHaJIu3a J(JlFlOlIpe~eJleHuH 42 3JleMeHTOB B JIyHapHblX rOpHblX IIOpOAaX u MeJlO=iu. CXeMa OCHOBaHa Ha CeMb pa3JiWiHblX o6nysemax, geTbIpe u3 KOTOpMX C HelIOCpeACTBeHHOi yCIIeKTpOMeTpuefi,aTpu-uCIIOJIb3yIOJQuXCuCTeMbl pa~HOXHMHW3cKor0 paa~eneam. 06rqee KOJIu4eCTBO npo6~ Tpe6yeMoe AJIH IlOBTOpHOrO aHaJlu3a paBH0 800 Mr. Cxeisa UcnmaHa Ha 6a3aJIbTe BCR-1 u npuseiqemx peaynmam nojrysemme Ha aToti 3TaJIOHHOti rOpHOti IIOpOAe. 06CymAeH OIIbIT IIOJIyseHHbIZt B
manuae
nyHapHbIx o6paaqeB u BCR-1.
3JIEKTPOXBMWIECKBE XAPAKTEPBCTIWB IIEPXJIOPATOB AJIIOMHH5IFI(III) EI: BEPEIJIJIEIH(II1) B JJBMETBJI@OPMAMHJJE: M. GALQVAand D. A. PANTONY, Taluntu, 1971, l&1209. Pe3IOMe--nOJIy=ieHbl XOpOLUO u306pameHHbIe BOJIbTaMIIepOMeTpusecKue nuKu Al(III)u Be(II1) B AM@ Ha 3JreKTpoAe B @opMe Bucwfefi PTYTHO~ Kanmi u uayneHa npupoga aneKTpoxmuqecKoro npoqecca B aToi cpeae. AHcopBgurr u XuMmecKan peaKqus,
conpmt&HbIe c IIepeHocoM aapsaa, 06HapymeHbI B 06oux cnysaHx. OnpeAeJTeHn OnTUManbHaH KOHJJeHTpaIJURAenOJIapUaaTopa u 0nTuManbHaK cKopocTb nepehteHbI noTeHquana em 3JIeKTpOXuMu~eCKUe XapaKTeaHamTmecKor0 0npeAeneKua. ~UCTHKU Al(II1) M Be(II1) BecbMa cxo)~u:eo~u paanusamcs TonbKo B wenew, He B xapaKTepe.
Summaries
for card indexes
fnkraction of coba& chloride with 2-~~1-~~~1 in a %:4 beozeue-othonol solution: VINCENZOCARUNC~O, ALWANDROBONWLI and MARIAANIDNIAFOGAROLI, Talunfu, 1971,18,1217. (Institute of Analytical Chemistry, University of Rome, Rome, Italy.) Summary-The cobalt(H) chloride2-nitroso-1-naphthol system has been studied spectrophotometrically in a 96:4 (v/v) benzene-ethanol solution. Two species have been found, the M :L complexation ratios quotients of the formaof which are 1: 1 and 1: 2. The inanition tion equilibria are & = 1.2 x lo* and K2 = 1.4 x 10’ respectively. The first step of the reaction is accompanied by a configurational change from a tetrahedral to an octahedral structure.
A catalytic method for the determination of cobalt impurities iu reactor cooling-water circuits: G. E. BATLEY, Tuhmz, 1971, 18, 1225. (Australian Atomic Energy Commission, Research Establishment, Lucas Heights, N.S.W., Australia.) Sum--Metal impurities in reactor cooling-water circuits must be kept to a hum. A method is described for the devotion of trace levels of cobalt in water samples, based on catalysis of the hydrogen peroxide oxidation of Alizarin Red S. The determination is carried out at pH 11.0 in a phosphate buffer under conditions where the reaction rate is a maximum. Interfering impurities are removed by an ion-exchange separation. The method enables cobalt to be determined in water samples down to lo-‘ &ml, or 5 x IO-&,u&nl in samples where an ion-exchange separation is not required.
On the distribution coefecient of nickel dimethylglyoximate between aa aqueous solution and orgauic solveuts: S. OKI, Tduntu, 1971, IS, 1233. (Faculty of ensnaring, Shizuoka University, Hamamatsu, Japan.) Sumruary-The distribution coefficients of nickel dimethylglyoximate between an aqueous solution and 6 inert solvents were determined at 20°. The distribution coefficients of the nickel chelate were quantitatively interpreted in terms of solubility parameters. The solubility parameter for the nickel chelate was evaluated to be 12.9, that for the aqueous solution to be 18.6, and the molar volume of the chelate to be 182 mljmol.
Cation-exchrmge seporatioo and determination of silver in admixture! withmercnry(II): R. L. SHRIMAL,Tabztu, 1971,18,1235. (Department of Chemistry, Government Science College, Gwalior, India,) Suuuna~--Cation-exchange separation of silver from mercury(H), copper(H), cobalt(H), nickel and zinc, based on the differences in the stability constants of the complexes formed by these elements with EDTA at pH 4.6, is described. Silver is eluted with 16% nitric acid and is determined by Volhard’s method.
xi
xii
AmoTaum
maTei
B3AkIMOAEfiCTBBE XJIOPHAA HOBAJIbTA(J1) Id 2-HBTP030-I-HA@TOJIA B PACTBOPE BEH30JIABTAHOJIA 96: 4: VINCENZO CARUNCHIO, ALESSANDRO FOGAROLI, Talunra,1971,18,1217.
BONDOLI
and MARIA
ANTONIA
PeWMe--CElCTeMa COCTORILIaFICR MB XJIOpEIAa KO6aJIbTa(II) II %HKTpOE30-1-Ha$TOJla MsyYeHa CIleKTpO+OTOMeTpWieCKHM MeTOAOM B pacTBope 6eH3ona--3TaKona 96:4 no o6%eMy. O6HapymeHbI~BaKoMnneKca,oTHolueHae M:JI KOTO~~IX~~IZO~:~H~:~. YaCTHbIe KOHqeHTpaqHti paBHOBeCHOr0 o6paaoBafrzw paBHEJ I<, = 1,2 X 10' II K, = 1,4 X lo*, COOTBeTCTBeHHO. nepBbIti mar peaKqiui conpoBowAaeTcn cTpyK~yp~aM nepexoAoM 148 TeTpaEJApINeCKO~ B OKTaaApEl"eCKyIO (lOpMy.
KATAJIBTWIECKB~ METOQ OJIPEAEJIEHBR IIPUMECEm ECOBAJIbTA B BOAE 113 OXJIA~AAIOIIJIJX CIlCTEM PEAKTOPOB :
G. E. BATLEY, TaZu~~u,1971,18,1225. Pemnrc+-Hwo
CBOAIlTb Ha MHHElMyM UpIlMeCEfMeTaJlJlOBB BOAe OXJIa~AaJOIQHX CElCTeM peaKTOpOB. OlTkiCaH MeTOn OIIpefieJIeHHR CJleAOBbIXKOJlH'IeCTBKO6aJlbTaB BOAe,OCHOBaHHbItiHaKaTaJIL13e OKEiCJIeHIlRaJIElBapIlHOBOr0KpaCHOl'O S IIepeKHCbIO BOAOpOAa. OnpeAeneHHe II~OBOAHTCH np~i pH 11,0 B pacTBope @OC+aTHoro By#jepa Upa YCJIOBHFIX COOTBeTCByIO~IlX MHHIlMyMy CKOpOCTH peaKuHn. MeuraIomHe IlpHMeCH OTCTpaHRIOT MOH006MeHHbIM MeTOn II03BOLU4eT OIlpeAeJViTb KO6aJIbT B npo6ax MeTOAOM. BOAbI BllJlOTbA0 lO-4 MKI'/MJIMJlllBIIJlOTbA0 5 X lo-' MKr/MJI B npo6axHe 1labICKy10~MxHoH006MeHHOe paaAejreaae.
0 K03WWi~BEHTE PACHPEjJEJIEHBH AIJMETBJII’JIBOHCBMATA HklKEJIFI MEXAY BOAHbIM PACTBOPOM Iii OPI’AHM9ECKtiMki PACTBOPBTEJIFIMB: S. OKI, Tuluntu, 1971,18,1233. Peaww-OnpeAeneKbI npsi 20' Koa@JqaeHTbI pacnpeAeneHKH AIlMeTElJIlVlHOKCHMaTaHUKeJlR Me?KAy BOAHMM paCTBOpOM II 6 HHepTHbIMH paCTBOpl4TeJIfiMH. Koa@@nqHeKTbI pacnpeAeneKnR XeJiaTa HEIKeJIH KOJIWIeCTBeHHO IIpOTOJIKOBaHbIC T09KEI apeHEiR KapaMeTp pacTBopmIlapaMeTpOB paCTBOpEIMOCTEi. PaccwTaH MOCTH XeJIaTa HIlKeJlfI 12,9, BOAHOrO paCTBOpa -l&6, a MOJIHpHbl& o6'beM XeJlaTa -182 MJI/MOJlb.
OTAEJIEHElE KATElOHHOI’O
CEPEBPA OBMEHA
OT PTYTH(I1) METOAOM II EI’O OlIPEAEJIEHIJE:
R. L. SHRIMAL, Tulantu, 1971,18,1235. Pesmm-OnmcaHo OTAeneme cepe6pa OT PTYTH(II), MeJui(II), KOGaJIbTa(II), HHKeJlH II qHHKa MeTOAOM KaTHOHHOrO 06MeHa, OCHOBaHHOM Ha paaHIlUe KOHCTaHT yCTOi%iBOCTIl KOMIlJleKCOB, o6pa3ymwaxca c 3ATA npw pH 4,6. Cepe6po enmnpym 16 % THOfh a3OTHOii KllCJlOTOiIIOIlpeJJenHIIoTMeTOAOMBonbxapaa.
Summaries
for card indexes
Dosage quantltatif des substances tensioactlves par &etroadsorptlon: E. VERDIER,J. Pmo and F. GARCIA MONTELONCO, Tulunta, 1971,18, 1237. (Equipe polarographique no 61, Faculte des Sciences, 34 Montpellier, France, and Catedra de quimica analitica, Escuela de Ingenieria Tech&a-Industrial, Las Palmas de Gran Canaria, Espagne). Summary_--A method for the quantitative determination of cationic and non-ionic surfactants which is based on their inhibiting effect on certain electrochemical reactions has been developed. This technique enables one to determine, with a precision of 2-3 %, these substances at concentrations of the order of 10-OM.
Determiaation of tboria ia thorium ores by an emission spectrographic method: N. C. KOTHARI, Tuluntu, 1971, 18, 1242. (Department of Engineering, James Cook University of North Queensland, Townsville, Queensland, Australia.) Summary_-The emission spectrograph is used to determine thoria in monazite sand. A sample of only 15 mg is required and yields rapid and accurate results for 2 % thoria or less. Of various additives tested as carriers, carbon and MOO, were found to be best. A current of 6 A gave a proper rate of volatilization without excessive spattering. The 267.28 nm MO line was used as internal standard and the 269.24 nm Th line for analysis. Silica and iron sulphide were used as matrix in synthetic samples. Results compared well with those obtained by wet-analysis.
Spectropbotometric determination of rotbeniam with dipbenyltbioviohric acid: R. S. CHAWLA,R. P. SINGHand K. C. TRIKHA,Tuluntu, 1971,18, 1245. (Department of Chemistry, University of Delhi, Delhi-7, and A.R.S.D. College, New Delhi, India.) Surn~-Diphenylthiovioluric acid (DPHTVA) reacts with ruthenium(W) to form a complex which has an absorbance maximum at 520 run. Effects of pH, heating time, buffer and reagent have been studied. DPHTVA has been found to be a sensitive reagent for ruthenium(II1) (sensitivity = 0.0044 ,!6g Ru/cm* for log &/Z = O.OOl), and has been made selective by the use of masking agents. The composition of the complex as revealed by different methods is 1:2 (ruthenium : DPHTVA).
...
XIII
xiv
AHxoTaqHH
cTaTeZt
KOJIWIECTBEHHOE OIIPEJJEJIEHHE IIOBEPXHOCTHO-AKTHBHbIX BEIIJECTB METOAOM WIEKTPOAACOPB~BB: E. VERDIER,J. PJROand F. GARCIAMONTELQNW, Tahta, 1237.
1971, 18,
Peamm+-PaspaBowm MeTon Hom~ecTBemoro onpe~enemiff KaTElOHHkJX S.i HeHOHOreHHblX UOBepXHOCTHO-aKTKBHblX BeJIJeCTB, OCHOBaHHbIfi Ha EIX HHrK6HpyH)aeM AetiCTBHli Ha HeKOTOpbIe aneKTpoxuMnPecKue peaKqKu. 3~0T MeTog noaBonHeT oupeAeJIflTbBTH BeqeCTBa tlpK KOHJJeHTpaqHFm 10-'&f C TO¶HOCTbH) 23%.
OHPEAEJIEHHE OKMCM TOPBH CI-IEKTPOI’PA@WIECKBM
B PYAAX METOAOM:
TOPBH
N. C. KOTHARI, Talanta, 1971,18,1242. PeWOM+-3MtfCCHOHHbIIt ClIeKTpOrpa$l EICD[OJIbk?OBaJfl RJIH OlIpeneJIeHUFI OKHCH TOpHH B MOHaJJHTHOM IIeCKe. MeToR Tpe6yeT TOnbKO 16 Mr npo6u H IIOBBOJIHeTnOJIyuaTb 6bIcTpbIeEITOYHbIe peByJIbTaTbI JJJIHMeHbJIIe WM 2% OKHCkI TOpHR. &I HClIbITaHHbEC HOCEiTeJIefi yrOJIb El MOO, RaJIH CaMbIe JIysnIHe pesynbTaTbI. nOJ&XO~a~aH CKOpOCTb yJleTyWiB~MJ3 UOJlyqeHa TOHOM 6,6esspesMepHOrO 06pbI8rHBaHHH. ~kfHK~ClIeKTpa267,28 HM MO UCUOJIbBOBaHa B KaYeCTBe BHyTpeHHOrO aTaJlOHa, a JlliHKR 269,24 HM Th--Am aHanma. AByOKMCb KpeMKwz EI cynb@q HteJIeaa HCIIOJIb8OBaHbIB KaYeCTBe MaTpIlqbI B HCKyCCTBeHHbIX npo6ax. PeByJIbTaTbI xopon~o COrJIarIIaxoTCFI c peayJIbTaTahn¶, IlOJly9eHFibIMEi XIIMli¶eCKElMMeTOJJOM.
CI-IEKTPOQOTOMETPWIECKOE OIIPEAEJIEHBE PYTEHMH AI@DEHIUITI~OBIJIOJIYPOBO~ KEICJIOTOB: R. S. CHAWLA, R. P. SINGH and K. C. TRIKHA,Talanta, 1971,18,1245. PeaIome-AEl~eHElnTnosHonypoBa~ KHCnOTa (A0TBK) pearHpyeT C pyTeHHeM(II1) o6paayR KOMIUIeKC, MaKCHMyM CBeTOnorxom(eHm KoToporo neHtaeT npsi 620 HM. HayueHo BnnfiHHe pH, npo~on~~TenbHocTn HarpeBaHIwI, 6y$@epa H peareaTa. JJ@TBK KpeAcTaBnaeT co608 syBCTBHTenbHbIl peareHT &TIR pyTeHEIH(III)-=iyBCTBYITeJIbHOCTb paBHa 0,0044 MKr RU/CM~ AJI~ Q lo/1 = 0,001; ero m6HpaTenbHocTb rroBbmaeTcR: mnonbBnpa6oTaHrmti pasnmBOBaHEieM MaCKHpyIOIIJHX areHTOB. HbIMH MeTOAaMH COCTaB KOMnJIeKCa 1:2 (pyTeHHti:ADTBK).