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Books

New Books

Analysis of Petroleum for Trace Met­als. Robert A. Hofstader, Oscar I. Mil-ner, and John H. Runnels, χ + 189 pages. American Chemical Society, 1155 16th St., N.W., Washington, D.C. 20036. 1976. $21.50

In 1972 an ambitious intercompany project was initiated by five of the major oil companies to develop analyt­ical methods for the determination of trace metals in oil. The companies participating in this project were At­lantic Richfield Co., Chevron Re­search Co., Exxon Research and Engi­neering Co., Mobil Research and De­velopment Corp., and Phillips Petro­leum Co. The results of this effort were later presented at a symposium entitled "Analysis of Petroleum for Trace Metals", sponsored by the Divi­sions of Analytical and Petroleum Chemistry at the 169th National Meeting of the American Chemical Society. The contents of this book, which are derived from the sympo­sium, present the methods developed by the participating companies for the

analyses of 13 elements of environ­mental concern. In the introductory chapters the book deals with sampling procedures, standards, storage and stability, contamination, and sample preparation. The chapters also discuss the different methods available—in­cluding increasingly popular elec-troanalytical methods—and empha­size variations of atomic absorption spectroscopy, the major technique used in the book. Step-by-step direc­tions for the determination of 13 ele­ments are then presented, with discus­sion on the finer points of trace analy­sis of petroleum and its products. The 13 elements discussed are antimony, arsenic, beryllium, cadmium, chromi­um, cobalt, lead, manganese, mercury, molybdenum, nickel, vanadium, and selenium. This book is the 156th vol­ume of the "Advances in Chemistry Series".

EPA Manual of Chemical Methods for Pesticides and Devices. 1000 pages. The Association of Official Analytical Chemists, Box 540, Benjamin Franklin Station, Washington, D.C. 20044. 1976. $27

This manual presents over 200 ana­lytical methods currently used by the Environmental Protection Agency (EPA) and state laboratories in en­forcing state and federal environmen­tal laws. These methods include anal­yses of commercial agricultural formu­lations such as pesticides, germicides, fungicides, herbicides, insecticides, and rodenticides by GC, HPLC, IR, UV, AA, and classical chemical proce­dures. The manual, compiled jointly by the EPA, the Association of Ameri­can Pesticide Control Officials, and the Association of Official Analytical Chemists (AOAC), is to be used as a supplement to the 12th edition (1975) of AOAC's "Official Methods of Anal­ysis". As such, the procedures in this manual have not achieved AOAC offi­cial status through collaborative test­ing. However, most of the methods have been partially validated in the EPA and state laboratories. The AOAC official methods, if available, take precedence over procedures in this manual. When a method receives official status, it will be deleted from the manual. The loose-leaf format of the manual is designed to accommo­date easily additions or deletions.

UiSGQSily determination - routinely simple with Brookfield Viscometer

Accurate, reproducible vis­cosity data obtained di­rectly in centipoise units from dial of portable in­strument. Multi-speed models cover a total range of 1-64,000,000 centipoise for Newtonian and non-Newtonian fluids. Rheology Center available for technical assistance on any viscosity problem,

without obligation. Complete accessories make the Brookfield

adaptable for virtually any viscosity measurement. Literature available.

BROOKFIELD ENGINEERING LABORATORIES INC. Dept. B4 STOUGHTON, MASS. 02072

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