Mason D W, Dillon H K, Glaser R A
Am Ind Hyg Assoc J. 1986 Jan;47(1):14-21. doi: 10.1080/15298668691389289.
A personal sampling and analytical method has been developed for the determination of monochloroacetic acid (MCA) vapor in air. The sampling procedure is the collection of MCA with a solid sorbent sampling tube packed with silica gel. The MCA is leached from the exposed sorbent into distilled, deionized water and quantitated by ion chromatographic analysis. The method has been validated in the concentration range of 0.35 to 29 mg/m3 in 3-L air samples. The capacity of the silica gel is in the range of 3 to 4 mg of MCA per 100 mg of sorbent, which allows for up to 8 hr of sampling at concentrations greater than 40 mg/m3. There are no significant interferences from glycolic acid, acetic acid, dichloroacetic acid, trichloroacetic acid, fluoride and chloride compounds, or water vapor. The effects on the analytical data due to variations in the temperature and humidity of the test atmosphere, sample storage time and chromatographic parameters have been found to be minimal.
已开发出一种个人采样和分析方法，用于测定空气中的一氯乙酸（MCA）蒸气。采样程序是使用装有硅胶的固体吸附剂采样管收集MCA。将MCA从暴露的吸附剂中浸出到蒸馏去离子水中，并通过离子色谱分析进行定量。该方法已在3-L空气样品中0.35至29 mg/m3的浓度范围内得到验证。硅胶的容量为每100 mg吸附剂吸附3至4 mg MCA，这使得在浓度大于40 mg/m3时最多可采样8小时。乙醇酸、乙酸、二氯乙酸、三氯乙酸、氟化物和氯化物化合物或水蒸气均无明显干扰。已发现测试气氛的温度和湿度变化、样品储存时间和色谱参数对分析数据的影响极小。
