Scobbie E, Dabill D W, Groves J A
Health and Safety Laboratory, Sheffield, U.K.
Ann Occup Hyg. 1998 Jan;42(1):45-59. doi: 10.1016/s0003-4878(97)00042-2.
Test samples were collected at a range of sites using the MDHS 68 sampler, a 7-hole sampler, and a cyclone respirable-dust sampler. Glass fibre, Zefluor, Fluoropore and silver (0.8 and 5 microns) filters were compared for weighing error, handling characteristics, and amount collected. The effects of a carbon back-up, of extraction solvent, and of analytical method were studied. The current HSE method for the sampling and analysis of coal tar pitch volatiles, MDHS 68 has been reviewed. It is recommended that the MDHS 68 sampler be replaced by a 7-hole head containing a silver or PTFE filter (approximately 1 micron pore size), with a graphitized carbon back-up if efficient collection of 2 to 4-ring PAHs is required. Cyclohexane is recommended as the extraction solvent. Methods of analysis which quantify the fume as a whole (MDHS 68, u.v., ELSD) were shown to give a response which varied according to the type of CTPV generating process. Therefore analysis of specific PAHs of occupational interest, by GC-MS or HPLC is recommended.
使用MDHS 68采样器、7孔采样器和旋风式可吸入粉尘采样器在一系列地点采集测试样品。比较了玻璃纤维、Zefluor、Fluoropore和银色（0.8和5微米）过滤器在称重误差、操作特性和采集量方面的差异。研究了碳备用层、萃取溶剂和分析方法的影响。对当前健康与安全执行局（HSE）用于煤焦油沥青挥发物采样和分析的MDHS 68方法进行了审查。建议将MDHS 68采样器替换为带有银色或聚四氟乙烯（PTFE）过滤器（孔径约1微米）的7孔采样头，若需要高效收集2至4环多环芳烃，则需使用石墨化碳备用层。建议使用环己烷作为萃取溶剂。已表明对烟雾整体进行量化的分析方法（MDHS 68、紫外、蒸发光散射检测器）给出的响应会因煤焦油沥青挥发物生成过程的类型而有所不同。因此，建议通过气相色谱-质谱联用（GC-MS）或高效液相色谱（HPLC）分析具有职业相关性的特定多环芳烃。
