micromeritics® instrument corporatio
1
micromeritics® instrument corporation Briefs Determination of Trace Quantities of Aromatic Amines in Dyestuffs 171 Benzidine, a- and β-naphthylamine, 3,3'-dichloroben- zidine, and 4-dimethylaminoazobenzene are analyzed by extraction with chloroform followed by gas-liquid chroma- tography and thin-layer chromatography. Janos Schulze,* Charles Ganz, and Douglas Parkes, Dyestuffs and Chemicals Division, CIBA-GEIGY Corporation, Post Office Box 11422, Greensboro, N.C. 27409 Anal. Chem., 50 (1978) Determination of the Aqueous Solubility of Polynuclear Aromatic Hydrocarbons by a Coupled Column Liquid Chromatographic Technique 175 A novel technique based on pumping distilled water through thermostated "generator columns" provides a means for determining the aqueous solubility of polynu- clear aromatic hydrocarbons as a function of temperature. Willie E. May* and Stanley P. Wasik, Institute for Materials Re- search, National Bureau of Standards, Washington, D.C. 20234, and David H. Freeman, Chemistry Department, University of Maryland, College Park, Md. 20790 Anal. Chem., 50 (1978) Nondestructive High Temperature Gas Radiochromatography 179 A nondestructive gas radiochromatographic system for continuous operation at 300 °C is developed. Backgrounds are low (75 cpm) and detector decontamination can be done in situ. B. E. Gordon,* W. R. Erwin, M. Press, and R. M. Lemmon, Laboratory of Chemical Biodynamics, Lawrence Berkeley Labora- tory, University of California, Berkeley, Calif. 94720 Anal. Chem., 50 (1978) Aids for Analytical Chemists Isolation of Xenobiotic Chemicals from Tissue Samples by Gel Permeation Chromatography 182 Douglas W. Kuehl* and Edward N. Leonard, U.S. Environmen- tal Protection Agency, Environmental Research Laboratory-Du- luth, 6201 Condgon Boulevard, Duluth, Minn. 55804 Anal. Chem., 50 (1978) High Performance Liquid Chromatographic Determination of Unreacted Acrylamide in Emulsion or Aqueous Homopolymers or Emulsion Copolymers 185 F. J. Ludwig, Sr.,* and M. F. Besand, Research Laboratory, Petrolite Corporation, Tretolite Division, St. Louis, Mo. 63119 Anal. Chem., 50 (1978) Supplementary Information for "Reagent Chemicals", 5th Edition 188 Manuscript Requirements Spectrometry Nomenclature 189 190 Guide for Use of Terms in Reporting Data in ANALYTICAL CHEMISTRY 191 Analysis, Identification, Determination, and Assay SI Units 191 192 CIRCLE 142 ON READER SERVICE CARD 10 A · ANALYTICAL CHEMISTRY, VOL. 50, NO. 1, JANUARY 1978 Unattended H PLC Up to 192 injections Up to 64 samples Automatically . . . • Microprocessor operation controls injections per sample, injection time, rinse b e t w I H samples and automatic shutdown. • Positive flow design requiiB only 0.75 ml of sample, allows precise, reproducible sample volumes. • Adaptable to any HPLCrli pumping unit — can be externally controlled by computer integrator. . . . with the model 72^ automatic injector for HPLC 5680 goshen springsWB| Τ^^ΉΤ^^ U.S.A. · telephone: 404/44ïPH£^R!Tex: 70-7450
Transcript of micromeritics® instrument corporatio
micromeritics® instrument corporation
Briefs
Determination of Trace Quantities of Aromatic Amines in Dyestuffs 171 Benzidine, a- and β-naphthylamine , 3,3'-dichloroben-zidine, and 4-dimethylaminoazobenzene are analyzed by extract ion with chloroform followed by gas- l iquid chromatography and thin- layer chromatography. Janos Schulze,* Charles Ganz, and Douglas Parkes , Dyestuffs and Chemicals Division, CIBA-GEIGY Corporation, Post Office Box 11422, Greensboro, N.C. 27409 Anal. Chem., 50 (1978)
Determination of the Aqueous Solubility of Polynuclear Aromatic Hydrocarbons by a Coupled Column Liquid Chromatographic Technique 175 A novel technique based on pumping distilled water through the rmos ta t ed "genera tor co lumns" provides a means for de te rmining the aqueous solubility of polynuclear aromat ic hydrocarbons as a function of t empera tu re . Willie E. May* and Stanley P. Wasik, Institute for Materials Research, National Bureau of Standards, Washington, D.C. 20234, and David H. Freeman, Chemistry Department, University of Maryland, College Park, Md. 20790 Anal. Chem., 50 (1978)
Nondestructive High Temperature Gas Radiochromatography 179 A nondest ruct ive gas radiochromatographic system for cont inuous operat ion at 300 °C is developed. Backgrounds are low (75 cpm) and detector decontamina t ion can be done in situ. B. E. Gordon,* W. R. Erwin, M. Press, and R. M. Lemmon, Laboratory of Chemical Biodynamics, Lawrence Berkeley Laboratory, University of California, Berkeley, Calif. 94720
Anal. Chem., 50 (1978)
Aids for Analytical Chemists
Isolation of Xenobiotic Chemicals from Tissue Samples by Gel Permeation Chromatography 182
Douglas W. Kuehl* and Edward N. Leonard, U.S. Environmental Protection Agency, Environmental Research Laboratory-Du-luth, 6201 Condgon Boulevard, Duluth, Minn. 55804
Anal. Chem., 50 (1978)
High Performance Liquid Chromatographic Determination of Unreacted Acrylamide in Emulsion or Aqueous Homopolymers or Emulsion Copolymers
185
F. J . Ludwig, Sr.,* and M. F. Besand, Research Laboratory, Petrolite Corporation, Tretolite Division, St. Louis, Mo. 63119
Anal. Chem., 50 (1978)
Supplementary Information for "Reagent Chemicals", 5th Edition 188
Manuscript Requirements
Spectrometry Nomenclature
189
190
Guide for Use of Terms in Reporting Data in ANALYTICAL CHEMISTRY 191
Analysis, Identification, Determination, and Assay
SI Units
191
192 CIRCLE 142 ON READER SERVICE CARD
10 A · ANALYTICAL CHEMISTRY, VOL. 50, NO. 1, JANUARY 1978
Unattended H PLC Up to 192 injections Up to 64 samples Automatically . . . • Microprocessor operat ion
controls injections per sample, injection time, rinse b e t w I H samples and automatic shutdown.
• Positive flow design requi iB only 0.75 ml of sample, al lows precise, reproducible sample volumes.
• Adaptable to any HPLCrli pumping unit — can be externally controlled by computer integrator.
. . . wi th the model 7 2 ^ automatic injector for HPLC
5680 goshen spr ingsWB| Τ^^ΉΤ^^ U.S.A. · telephone: 4 0 4 / 4 4 ï P H £ ^ R ! T e x : 70-7450
