Briefs
NOX
A
L
CO
Nonreactlve Coadsorption of Solutes on a Sampling Adsorbent 274 T h e effect of a d o m i n a n t c o m p o n e n t in an air s a m p l e on t h e sampling selectivity a n d c a p a c i t y of an a d s o r b e n t is s t u d i e d . Gas-solid equilibrium i s o t h e r m s are d e t e r m i n e d for b e n z e n e on C a r b o p a c k C a t 10, 30, a n d 50 ° C . Karen J. Hyver and Jon F. Percher*, Chemistry Department, The University of Mississippi, University, Miss. 38677 Anal. Chem.,56(1984)
Solvatochromic Investigation of Polarlzable Polymeric Liquids 278
THE FORCE IN CRITICAL CLEANING • Laboratories · Hospitals - R & D Facilities · Educational Institutions · Genera! Industry · Electronics • Dairy & Food Processing Modern sciences and industries are discovering aque ous cleaning to be efficient and safe. ALCONOX detergents clean without noxious fumes or harsh, dangerous acids or solvents. ALCONOX de tergents are concentrated, to be diluted for conve nience and economy. ALCONOX detergents remove difficult sous on glass, plastic metals, rubber, porcelains, and most hardsurface materials, without leaving film or residue. ALCONOX detergents complement virtually every aqueous cleaning method or system, either manual or machine, ALCONOX detergents: the force in critical cleaning for today's technologies.
E x a m i n a t i o n of t h e OV series of G L C s t a t i o n a r y p h a s e s b y t h e solvatochromic m e t h o d indicates t h a t t h e differential polarity of these liquids is determined by polarizability. A near-constant but low level of hydrogen bond accepting ability also is observed within the series. James E. Brady, Dale Bjorkman, Christian D. Herter, and Peter W. Carr·, Department of Chemistry, Smith and Kolthoff Halls, University of Minnesota, Minneapolis, Minn. 55455 Anal. Chem.,56(1984)
Analytical Performance of a Low-Gas-Flow Torch Optimized for Inductively Coupled Plasma Atomic Emission Spectrometry 283 Operating parameters are optimized by the simplex technique for s i m u l t a n e o u s , m u l t i e l e m e n t a t o m i c emission spectrometry. Signal-to-background ratios of the spectral lines tested are comparable or inferior b y a factor of 1.5-2 t o results o b t a i n e d with a conventional ICP. Akbar Montaser*, G. R. Huse, R. A. Wax, and Shi-Kit Chan, Department of Chemistry, George Washington University, Washington, D.C. 20052, and D. W. Golightly, J. S. Kane, and A. F. Dorrzapf, Jr., U.S. Geological Survey, 957 National Center, Reston, Va. 22092 Anal. Chem. ,56(1984)
Correspondence Direct Liquid Sample Introduction for Flow Injection Analysis and Liquid Chromatography with Inductively Coupled Argon Plasma Spectrometrlc Detection 289 ALCOJET" -ι. " .-.r 'c ·-/,'. v r * sudsing formula espec .1 » 'οι JJC ι- n t t l J' .-i'i Λ J' '"vs. Extremely effective, àlS'j ρ_-!μ3 :_brc^:c- a.~c! |_:οΙί·_1 machine parts L1QUI-NOX® phosphate-free anionic and non-ionic liquid detergent for manual and ultrasonic cleaning. ALCONOX efficiency in liquid form. Mild pH. ALCONOX* the original anionic powder detergent for manual and ultrasonic cleaning. Odorless. High sequester ing power. Helps decontaminate radioactive surfaces. DET-O-JET» alkaline liquid detergent and degreaser for tough cleaning chores. For use in mechanical, pressureinjection, and ultrasonic washers. TERG-A-ZYME® anionic ALCONOX powder plus protease enzyme to effectively remove proteinaceous soils. Ideal as a pre-soak. Cleans Reverse-Osmosis Installations. Available from all leading laboratory supply companies. FREE samples of ALCONOX detergents wilt prove their superiority—write today.
ALCONOX, INC.
Kimberly E. Lawrence, Gary W. Rice, and Velmer A. Fassel*, Ames Laboratory—USDOE, Iowa State University, Ames, Iowa 50011 Anal. Chem., 56 (1984)
Dispersion and Diffusion Coefficients In Flow Injection Analysis 292 Joseph T. Vanderslice", Gary R. Beecher, and A. Gregory Rosenfeld, Nutrient Composition Laboratory, Beltsville Human Nutrition Research Center, U.S. Department of Agriculture, Beltsville, Md. 20705 Anal. Chem., 56 (1984)
Separation of Complex Mixtures by Parallel Development Thin-Layer Chromatography
293
David Nurok*, Ronald E. Tecklenburg, Jr., and Bonnie L. Maidak, Department of Chemistry, Indiana University—Purdue University at Indianapolis, P.O. Box 647, Indianapolis, Ind. 46223 Anal. Chem., 56 (1984)
215 Park Avenue South, New York, N.Y 10003 CIRCLE 12 ON READER SERVICE CARD
120 A · ANALYTICAL CHEMISTRY, VOL. 56, NO. 2, FEBRUARY 1984
