- Email: [email protected]
Ultra Purity, Methods and Techniques
JOURNAL OP CWROMATGGRAPHY
373
Book Reviews
Gas Chromnto,n~afi~t,v Afifdicntdom 1972, published July 1972, 164 pges, price US $5,-.
by
Becker
Delft
N.V.
(Holland),
This soft-cover booklet contains a number of gas chrotnatographic separations which were performed as customer service by Becker Delft N.V. and Packard Instrument Company in a number of countries. They cover a, wide field and give complete working details of the various analyses. There is nothing unusual for manufacturers of gas chromatographs to publish the separations carried out in their laboratories. Carlo Erba does it, for example, in each issue of Cro~&zo ti%Clzi~&2, It is, however, unusual that a firm charges for it as if it were a handbook on the topic. The reviewer feels that there is little in these methods which has not appeared already in the literature except that the technique was transferrecl to a Packarcl instrument. Also something horrible has happened in the editing of the volume in that all reference numbers quoted in the text are wrong. The book is certainly valuable for every user of Becker and Packard gas chromatographs, but are $5 justified? CHROM. 6317 UZtra$wity, Methods and Tcchniqzcas, edited by M. ZIEP AND R. SPEIGHTS, Marcel Dekker, Inc., New York, 1972, Ggg pages, price US $37,5o. This multi-author volume contains twenty-two chapters divided into three sections, v.iz. preparation, handling and analysis. Some of the chapters are excellent and should be read not only by every chemist but also be includecl in courses in analytical chemistry, for example, the chapter on the preparation of ultrapure water, the chapter on airborne contamination, and the chapter on glass containers. Other chapters appear of limited interest, e.g. sublimation of phosphorus pentoxide, but may be useful illustrations. Others again, e.g. the preparation and charactcrisation of cholesterol, seem to be rather out of place. The conclusion of the chapter points out that thin-layer chromatography can detect as little as 0.05-1 wt% of an impurity. Thus, if there are ten impurities (which is not unusual) in the o.o4o/o range, i.e. 0.4% of the total, the sample will appear as free of impurities. Surely this limitation brings the chapter outside the scope of the book, unless it is used as an illustration in what poor state our purity concepts are for organic compounds. If the latter is meant, it is not adequately emphasised. However, the reviewer is convinced that the good chapters outweigh whatever shortcomings there are in the other chapters and-feels that the editors should be on an excellent job. congratulated Rome
(Italy)
_.W
MICHAEL LISDERER J, Chvowztogv.,
74 (rgp)
373
373
Book Reviews
Gas Chromnto,n~afi~t,v Afifdicntdom 1972, published July 1972, 164 pges, price US $5,-.
by
Becker
Delft
N.V.
(Holland),
This soft-cover booklet contains a number of gas chrotnatographic separations which were performed as customer service by Becker Delft N.V. and Packard Instrument Company in a number of countries. They cover a, wide field and give complete working details of the various analyses. There is nothing unusual for manufacturers of gas chromatographs to publish the separations carried out in their laboratories. Carlo Erba does it, for example, in each issue of Cro~&zo ti%Clzi~&2, It is, however, unusual that a firm charges for it as if it were a handbook on the topic. The reviewer feels that there is little in these methods which has not appeared already in the literature except that the technique was transferrecl to a Packarcl instrument. Also something horrible has happened in the editing of the volume in that all reference numbers quoted in the text are wrong. The book is certainly valuable for every user of Becker and Packard gas chromatographs, but are $5 justified? CHROM. 6317 UZtra$wity, Methods and Tcchniqzcas, edited by M. ZIEP AND R. SPEIGHTS, Marcel Dekker, Inc., New York, 1972, Ggg pages, price US $37,5o. This multi-author volume contains twenty-two chapters divided into three sections, v.iz. preparation, handling and analysis. Some of the chapters are excellent and should be read not only by every chemist but also be includecl in courses in analytical chemistry, for example, the chapter on the preparation of ultrapure water, the chapter on airborne contamination, and the chapter on glass containers. Other chapters appear of limited interest, e.g. sublimation of phosphorus pentoxide, but may be useful illustrations. Others again, e.g. the preparation and charactcrisation of cholesterol, seem to be rather out of place. The conclusion of the chapter points out that thin-layer chromatography can detect as little as 0.05-1 wt% of an impurity. Thus, if there are ten impurities (which is not unusual) in the o.o4o/o range, i.e. 0.4% of the total, the sample will appear as free of impurities. Surely this limitation brings the chapter outside the scope of the book, unless it is used as an illustration in what poor state our purity concepts are for organic compounds. If the latter is meant, it is not adequately emphasised. However, the reviewer is convinced that the good chapters outweigh whatever shortcomings there are in the other chapters and-feels that the editors should be on an excellent job. congratulated Rome
(Italy)
_.W
MICHAEL LISDERER J, Chvowztogv.,
74 (rgp)
373