Here is a one-volume extensive treatment of a n e w scientific d i s c i p l i n e - e n v i r o n m e n t a l geoc h e m i s t r y — w h i c h traces the source, transition, concentration, and eventual fate of trace elements in the environment.
Trace Elements in the Environment
In low concentrations these substances will foster life, while in large doses they are often toxic. This up-to-date volume addresses itself t o this problem and surveys the latest methods of identification, separation, and measurement. Nine papers discuss: •
boron, zinc, and selenium; inorganic aerosols
•
vanadium, mercury, and lead
•
atmospheric pollutants; marine aerosol salt and dust
1 4 9 pages ( 1 9 7 3 ) Cloth, $ 1 1 . 5 0 ; Paper, $ 6 . 4 5 . Postpaid in U.S. and Canada, plus 4 0 cents else 1 where.
ADVANCES IN CHEMISTRY SERIES No. 123
Order from: Special Issues Sales American Chemical Society 1155 Sixteenth St., N.W. Washington, D.C. 2 0 0 3 6
Evaldo L. Kothny, Editor A symposium sponsored by the Division of Water, Air, and Waste Chemistry of the American Chemical Society.
L A B O R A T O R Y SUPPLY CENTER ^ W W M M ^ M M M W W M ^ M A M A A A A A A M M ^ M W W W W M A M A A f M A A M M A M A
AdipoyI Chloride • A l l y l Thiourea • Aluminon • Benzenearsonic Acid Benzhydryl Bromide* a-Bromonaphrhalene«Bromothymol Blue,Sodium 2,3-Bulanedione M o n o x i m e • Cuprous Bromide • 1,2-Diethoxyethane Diethyl Adipate • 2,7-Dihydroxynaphthalene • Dimethyl Chloroacetal Dulcitol • Esculin • Formamidine Disulfide DiHCI • Inulin o-lodobenzoic Acid • 2-Methylcyclohexanone • Methyl 2-Furoate Neutral Red • Orcinol • Phloroglucinol • Potassium-meta-Periodate Sodium Diethyldithiocarbamate • Taurine • 2,2,2-Trichloroethanol
Rates Available on Request
ANALYTICAL CHEMISTRY Donna C. Bifano Production Assistant
Write (or list K-72 of other chemicals TWX:
Tel.: 516-273-0900
EASTERN CHEMICAL Division of G U A R D I A N CHEMICAL CORP.
OXYGEN-18?
BO
*
250
510-227-6230
142 East A v e .
Norwalk, Conn. 06851 203-8S3-4488
°«
H A U P P A U G E , N . Y. 1 1 7 8 7
PROMPT SHIPMENT
CABLE ADDRESS: SACTEX
For lowest prices, call (415) 234-4130 or write for our newest isotope catalog.
POLAROGRAPHIC ELECTROMETRIC REAGENTS
Bi:HiB:t:lilA/^tia/«^gj
Quaternary ammonium compounds.
32nd & Griffin Ave., Richmond, CA 94804
-Do you need?
OPTICAL SHIFT REAGENT Eu (TFC) 3 1 g $30.00
Highly purified salts and solutions.
SOUTHWESTERN ANALYTICAL rurm/^Air
BOX
*ss — AUSTIN, TIX
V . n b f V l l W . A L b ARIA 512 444-3626 32nd & Griffin Ave . Richmond. CA 94804
1156 A . ANALYTICAL CHEMISTRY, VOL. 45, NO. 13, NOVEMBER 1973
—literature on request