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APPARENT REACTION PRODUCTS DESORBED FROM TENAX USED TO SAMPLE AMBIENT AIR
Citation:
Walling, J., J. Bumgarner, D. Driscoll, C. Morris, AND A. Riley. APPARENT REACTION PRODUCTS DESORBED FROM TENAX USED TO SAMPLE AMBIENT AIR. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-86/001 (NTIS PB86176005).
Description:
Ambient air was sampled using distributed air volume sets of tandem Tenax beds at several locations. Apparent concentrations at some sites were ill behaved. Significant amounts of materials sometimes appeared on back beds where that would not be expected from retention volume estimates. Contamination and operating errors cannot explain the observations. Unidentified chemical reactions during sampling and/or thermal desorption are implicated. Reactions observed or reported in laboratory situations during simulated sampling or thermal desorption yield products of the kinds observed in these atmospheric samples.