An Improved Inpregnated-filter Method for Measuring Low-level Concentrations fo Toluene Diiscoyanates in Air
Date Published |
02/1995
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Publication Type | Report
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LBL Report Number |
LBL-36641
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Abstract |
An improved method was developed and validated for measuring low-level concentrations of toluene diisocyanates (TDIs) in air. The method is based on OSHA Method 42 for industrial applications. Airborne TDIs were trapped on a 25-mm glass-fiber filter impregnated with 50 µg of 1-(2-pyridyl)piperazine. A filter holder for was constructed to minimize contamination and losses of the analytes. The derivatized TDIs were extracted by immersion of the filter in a small volume of solvent. The analysis was performed with a high performance liquid chromatograph equipped with a fluorescence detector and a C18 base-deactivated silica column. |
Year of Publication |
1995
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File(s) | |
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