【摘 要】
：
用五段分级采样器采集太原某焦化厂厂区大气颗粒物，用液相色谱测定不同粒径颗粒物上５种多环芳烃（ＰＡＨ）的含量，并用Ａｍｅｓ试验及ＣＨＬ细胞姐妹染色单体互换（ＳＣＥ）试验，观察不同粒径颗粒提取物的致突变性。
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用五段分级采样器采集太原某焦化厂厂区大气颗粒物，用液相色谱测定不同粒径颗粒物上５种多环芳烃（ＰＡＨ）的含量，并用Ａｍｅｓ试验及ＣＨＬ细胞姐妹染色单体互换（ＳＣＥ）试验，观察不同粒径颗粒提取物的致突变性。结果表明５种ＰＡＨ浓度均很高，芘为１４．８９μｇ／１００ｍ３、为１９．３５μｇ／１００ｍ３、苯并（ａ）蒽（ＢａＡ）为１８．９μｇ／１００ｍ３、为１１４．６７μｇ／１００ｍ３、苯并（ａ）芘（ＢａＰ）为１５．９μｇ／１００ｍ３。４７～７０％的ＰＡＨ富集在≤２μｍ细颗粒上，其质量中值直径芘、、ＢａＡ、、ＢａＰ分别为２．２、２．１、１．６、１．９、１．３。Ａｍｅｓ试验和ＳＣＥ试验结果均表明，分级颗粒粒径愈小其提取物致突变作用愈强。
Five stages of sampler were used to collect the atmospheric particulates of a coking plant in Taiyuan. The contents of five polycyclic aromatic hydrocarbons (PAHs) on different particle size particles were measured by liquid chromatography. Ames test and CHE sister chromatid exchange (SCE) ) Test to observe the mutagenicity of different size particle extracts. The results showed that the concentrations of all five PAHs were very high, with pyrene at 14.89μg / 100m3 at 19.35μg / 100m3, BaA at 18.9μg / 100m3 at 114.67μg / 100m3, (A) Pyrene (BaP) of 15.9μg / 100m3.47 ~ 70% PAH enriched in ≤2μm fine particles, the mass median diameter pyrene ,, BaA ,, BaP were 2.2,2.1 , 1.6, 1.9, 1.3. The results of Ames test and SCE test showed that the smaller the graded particle size, the stronger the mutagenicity of the extract.
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