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于2012年5月在内蒙古鄂尔多斯的东胜、纳林希里、棋盘井和上湾等4个采样点连续采集大气TSP和PM10样品,利用GC-MS分析了其中18种OCPs。结果表明:除了硫丹Ⅱ、硫丹Ⅰ和α-HCH未检出,β-HCH部分检出以外,其余14种OCPs均有100%检出。鄂尔多斯东胜、纳林希里、棋盘井和上湾TSP中∑OCPs浓度依次为2.63、9.85、5.09和6.22ng/m3;在PM10中为2.13、8.74、4.84和6.77ng/m3。∑OCPs中比重超过15%的有ADs、HCs和DDTs。TSP中∑OCPs浓度基本高于PM10中浓度,并且它们存在较好的正相关,相关系数r达到0.8846。污染源分析表明,纳林希里HCHs、CDs和DDTs可能均有外源输入。
Atmospheric TSP and PM10 samples were continuously collected at four sampling sites: Dongsheng, Nalinhili, Qipanjing and Shangwan in Ordos, Inner Mongolia in May 2012, and 18 OCPs were analyzed by GC-MS. The results showed that all 14 kinds of OCPs were detected except for endosulfan Ⅱ, endosulfan Ⅰ and α-HCH, and the β-HCH part was detected. The concentrations of ΣOCPs in TSP in Dongsheng, Nalinhili, Qipanjing and Shangwan Ordos were 2.63, 9.85, 5.09 and 6.22 ng / m 3 in TSP and 2.13, 8.74, 4.84 and 6.77 ng / m 3 in PM10, respectively. There are ADs, HCs and DDTs in more than 15% of ΣOCPs. The concentration of ΣOCPs in TSP was basically higher than that in PM10, and there was a good positive correlation between them. The correlation coefficient r was 0.8846. Pollution sources analysis showed that Narinchili HCHs, CDs and DDTs may all have exogenous inputs.