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200 ppb Cu
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mm^cdi
OurTrace Metal Detectors
Work • They will simultaneously measure lead, c a d m i u m , copper, and bismuth on a single sample. • They will routinely measure lead, zinc, copper, indium, thallium, c a d m i u m , bismuth, silver, and gold at nanogram levels. • With a little extra care, they'll also measure other elements such as arsenic, mercury, gallium, tin, iron, and certain chelates. • They will analyze up to 12 samples at a time, if equipped with low cost options. • They will detect these elements in b l o o d , bone, tissue, air, water, oil, film, peas, pipe, candy, tomato soup, or almost anything else you can think of. • They're sensitive from 0.01 to 1.0 ppb, and inherently precise to within ±2 to ± 3 percent average d e p e n d i n g on the metal, matrix and procedures used. • They're fast and dependable, and if you'll trade off a little accuracy, operate on a 4 to 5 minute cycle. That means low sample cost, because they can be operated by para-professional personnel and don't cost much in the first place. They're just made better to do more. Call, write, or wire for complete information on our equipment or service laboratory. Or circle our number on the Bingo Card.
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Determination of Electron Transfer Parameters via the Semi-Integral J. H. Carney and H. C. Miller Analytical Applications of Pulsed Voltammetric Stripping at Thin Film Mercury Electrodes T. R. Gopeland, J. H. Christie, R. A. Osteryoung, and R. K. Skogerboe Enhancement of the Sensitivity and Selectivity of the Coulson Electrolytic Conductivity Detector to Chlorinated Hydrocarbon Pesticides John W. Dolan and Randall C. Hall Evaluation of Some Factors Influencing the o-Toluidine Reaction with Glucose Hugh Y. Yee and Jesse F. Goodwin Atomic Absorption Determination of Elemental Mercury Collected from Ambient Air on Silver Wool S. J. Long, D. R. Scott, and R. J. Thompson Column Partition Chromatographic Determination of Sodium Alkane Monosulfonates W a h i d R. Ali and P a t r i c k T . L a u r e n c e
Determination of Water Content in Toluenesulfonic Acid by Nuclear Magnetic Resonance Kiyoshi Mashimo and Tohru Wainai Potassium ferf-Butoxide—A Strong Base for the Nonaqueous Visual Titration of W e a k Acids Sarah Ehrlich-Rogozinski and Hans Rudolf Bosshard Differential Kinetic Analysis of Nitric Oxide-Nitrogen Dioxide Mixtures by Reaction with I r o n ( I I ) in Sulfolane as Solvent J. F. Coetzee, D. R. Balya, and P. K. Chattopadhyay Glass-Metal Composite Electrodes George G. Guilbault, G. J. Lubrano, and Don N. Gray Determination of T r a c e Amounts of C 2 - C 5 Acids in Aqueous Solutions by Gas Chromatography Antonio Di Corcia and Roberto Samperi Determination of Organic Peroxides in Low Concentration by a Biamperometric Method F. C. Montgomery, R. W. Larson, and W. H. Richardson Characteristics of Interrupted Elution Gas Chromatography John Q. Walker and Clarence J. Wolf Direct Determination of Sulfide by Rapid Direct Current Polarography D. R. C a n t e r f o r d
Atomic and Molecular Absorption Measurements by Intra-Cavity Quenching of Laser Fluorescence H. W . L a t z , H. F. W y l e s , a n d R. B. G r e e n
Simultaneous Determination of Ferrocyanide and Ferricyanide in Aqueous Solutions Using Infrared Spectrometry D. M. Drew
Circle 62 on Reader Service Card 1050 A · ANALYTICAL CHEMISTRY, VOL. 45, NO. 12, OCTOBER 1973
