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ANALYTICAL CHEMISTRY, VOL. 57, NO. 6, MAY 1985
For determinations on the same window in exactly the same position in the spectrophotometer, the relative standard deviation was 0.7%.
LITERATURE CITED (1) Hummel, Dieter 0. "Atlas of Polymer and Plastics Analysis", 2nd ed.; Carl Hanser Verlag: Munich, 1978.
(2) Cheesman, G. C. N.; Pollard, K. R. N. "International Polymer Latex Conference"; 10; Plastics and Rubber Institute: London, 1978.
RECEIVED for review November 19, 1984. Accepted January 14, lgg5* The authors thank Doverstrand, for permission to publish this paper.
CORRECTIONS Automated Cryogenic Preconcentration and Gas Chromatographic Determination of Volatile Organic Compounds in Air William A. McClenny, Joachim D. Pleil, Michael W. Holdren, and Richard N. Smith (Anal. Chem. 1984, 56, 2947-295 1). On page 2950, right column, lines 54-56, the sentence should read, Since response factors of the two ECDs were different, ECD 1 response # ECD 2 response .... Also page 2951, last subheading should read Comparisons of Two Nominally Identical Systems.
Determination of Mycotoxins by Gradient High-Performance Liquid Chromatography Using an Alkylphenone Retention Index System Dennis W. Hill, Thomas R. Kelley, Karen J. Langner, and Kevin W. Miller (Anal. Chem. 1984, 56, 2576-2579). In the Experimental Section, under HPLC Analysis, the solvent program used to separate the mycotoxins was a 60-min linear gradient from 20% CH3CN/H20to 100% CH3CN at a flow rate of 2.0 mL/min.
Comparison of Thermospray and Fast Atom Bombardment Mass Spectrometry as Solution-Dependent Ionization Techniques Catherine Fenselau, D. J. Liberato, J. A. Yergey, R. J. Cotter, and A. L. Yergey (Anal. Chem. 1984,56,2759-2762). In the article the structure of stachyose (a-D-galactosyl-aD-galaCtOSyl-a-D-glUCOSyl-P-D-frUC~Se) was incorrectly drawn. The correct structure has two 1,6 linkages instead of the 1,4 linkages shown. This does not affect any of the conclusions drawn from the data presented in that paper.
WARNING Determination of Hydrogen Cyanide in Air by Ion Chromatography T. W. Dolzine, G. G. Esposito, and D. S. Rinehart (Anal. Chem. 1982,54, 470-473). George Esposito writes us as follows: We used the method successfully for over 3 years processing in excess of 2000 samples. Recently, a set of 30 samples exploded causing minor damage to the oven in which they were being heated. Fortunately, no one was injured; however, we feel compelled to alert users of the method to the potential hazard that may exist during the heating cycle of the procedure.
