This analytical method is a validated measurement procedure for the determination of epichlorohydrin [106‐89‐8] in workplace air averaged over the sampling period after personal or stationary sampling. Sampling is performed by drawing a defined volume of air through an adsorption tube filled with Tenax TA using a suitable flow‐regulated pump. The flow rate is set to 20 mL/min with a recommended air sample volume of 1.2 L (which corresponds to a sampling period of 60 min). After thermal desorption at 280 °C the sample is analysed by means of GC with a flame ionisation detector (FID). The quantitative determination is based on a calibration function obtained by means of a multiple‐point calibration. The relative limit of quantification (LOQ) is 0.39 mg/m3 epichlorohydrin for an air sample volume of 1.2 L. The mean recovery was 95% and the expanded uncertainty for epichlorohydrin was 16.1% over the entire measurement range.
Joint Publication of the Analytical Subcommittee of the Chemistry Board of Experts of the Expert Committee Raw Materials and Chemical Industry of the German Social Accident Insurance and the working group “Air Analyses” of the Permanent Senate Commission of the Deutsche Forschungsgemeinschaft for the Investigation of Health Hazards of Chemical Compounds in the Work Area