Simultaneous
Briefs
I.C.P.A.E.S.
Elemental Analyzer Designed for routine use, the JY-46 offers rapid analysis of up to 48 elements simultaneously and uses time-proven techniques to enhance reliability and speed. Will accept two sources. For e x a m p l e : a spark stand plus an Inductively Coupled Plasma source. Use for analysis of ferrous and non-ferrous metals and alloys, oils, industrial effluent, cools, ores and rare earths. Holographic diffraction gratings. Fully computer operated. Also ask about our JY-38 Sequential Plasma Specrroanalvzer. Instruments SA, Inc., J-Y Optical Systems Division, 173 Essex Avenue, Metuchen, N.J. 0 8 8 4 0 ( 2 0 1 ) 4 9 4 - 8 6 6 0 , Telex 8 4 4 - 5 1 6 . In Europe, Jobin Yvon, Division d'Instruments SA, 16-18 Rue du Canal, 9 1 1 6 0 L o n g j u m e a u , France, Tel. 909.34.93TelexJOBYVON 8 4 2 - 6 9 2 8 8 2 .
JOBIN YVON
Instruments SA, Inc. J-Y Optical Systems Division
Preconcentration of Dilute Solutions at the 1 0 ~ 1 2 g/g Level by Nonboiling Evaporation with Variable Variance Calibration Curves 140 For most of the twelve elements determined in aqueous solution by flameless atomic atmosphere, the precision is of the order of 10%. Claude Boutron* and Serge Martin, Laboratoire de Glaciologie du CNRS, 2, rue Tres-Cloitres, 38031 Grenoble Cedex, France Anal. Chem.,51 (1979) Identification of Polynuclear Aromatic Hydrocarbons by Shpol'skii Low Temperature Fluorescence 145 Samples from automobile exhaust, ambient air, and alumina production are analyzed by reversed phase H P L C and Shpol'skii fluorescence. Anders Colmsjo and Ulf Stenberg,* Department of Analytical Chemistry, University of Stockholm, Arrhenius Laboratory, S-106 91 Stockholm, Sweden Anal. Chem., 51 (1979) Pretreatment of Polyolefin Bottles with Chloroform and Aqua Regia Vapor to Prevent Losses from Stored Trace Mercury(ll) Solutions 151
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>o_mSEE THE LIGHT! The R o m a n o r HG-25 d o u b l e m o n o c h r o m a t o r R o m a n system offers t h e greatest t h r o u g h p u t in t h e industry, t h e simplest o p t i c a l d e s i g n a n d t h e largest, m o s t accessible s a m p l e c h a m b e r . The R a m a n o r a n d its full line of accessories ensures d r a m a t i c results. Call or w r i t e for m o r e i n f o r m a t i o n o n t h e most a d v a n c e d R a m a n system in t h e w o r l d at Instruments SA, Inc. Instruments SA, Inc., J-Y Optical 5ystems Division, 173 Essex Avenue, Metuchen, N.J. 00640. (201) 494-8660, Telex 644-516. In Europe, Jobin Yvon, Division d'Instruments SA, 16018 Rue du Canal, 91160 Longjumeau, France, Tel. 909.34.90 Telex JODYVON 842-692862.
JOBIN YVON
Instruments SA, Inc.
T h e p r e t r e a t m e n t suppresses losses from stored 1 p p b Hg(II) solutions in natural and distilled water to 8-14% after 25 days. R. W. Heiden and D. A. Aikens,* Department of Chemistry, Rensselaer Polytechnic Institute, Troy, N.Y. 12181 Anal. Chem., 51 (1979)
Correspondence
Mass Spectrometry of Polycyclic Aromatic Hydrocarbons by Linked-Scan Studies of Metastable Ions 156 Bori Shushan, Stephen H. Safe, and Robert K. Boyd,* GuelphWaterloo Centre for Graduate Work in Chemistry (Guelph Campus), University of Guelph, Guelph, Ontario, Canada, NIG 2W1 Anal. Chem. 51 (1979) Potential Interferences in the Determination of Sulfur by Thermal Neutron Induced Prompt 7-Ray Spectrometry 158 David B. Curtis,* Ernest S. Gladney, and Edward T. Jurney, Los Alamos Scientific Laboratory, Los Alamos, N.M. 87545 Anal. Chem., 51 (1979)
Aids for Analytical Chemists
J-Y Optical Systems Division
Improved Gas Chromatographic Method For Field Measurements of Nitrous Oxide in Air 159 T. Punpeng, J. O. Frohliger,* and N. A. Esmen, Department of Industrial Environmental Health Sciences, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pa. 15261 Anal. Chem., 51 (1979)
CIRCLE 102 O N READER SERVICE CARD
10 A · ANALYTICAL CHEMISTRY, VOL. 5 1 , NO. 1, JANUARY 1979
