淮北芦岭矿区土壤中PAHs的分布特征及分析  

Concentrations,distributions,and source of polycyclic aromatic hydrocarbons in soil of Luling Coal Mine in Huaibei

作　　者：刘静静[1] 王儒威[1] 刘桂建[1] 张佳妹[1] 

机构地区：[1]中国科学院壳幔物质与环境重点实验室,中国科学技术大学地球与空间科学学院,安徽合肥230026

出　　处：《中国科学技术大学学报》2010年第7期661-666,共6页JUSTC

基　　金：国家自然科学基金(40873070);国家科技重大专项(2008ZX05039-003);安徽省优秀青年基金(08040106909)资助

摘　　要：在运用气相色谱-质谱方法对淮北芦岭煤矿区17个代表性土壤样品和一个煤矸石样品进行28种PAHs(polycyclic aromatic hydrocarbons)测试和分析的基础上,研究了PAHs在矿区土壤中的分布特征及迁移行为,评价了PAHs在矿区的环境影响.结果表明,研究区28种PAHs,总含量(干重)∑28PAHs从0.35μg/g到6.21μg/g,平均值为1.69μg/g.其中16种是USEPA规定的优控PAHs,总含量(干重)∑16PAHs从0.23μg/g到3.53μg/g,平均值为1.00μg/g.按相关评价标准,该区部分土壤受到PAHs中度到重度污染,且该区PAHs污染来源是煤矸石堆和生物质燃料燃烧.通过毒性评价可知,PAHs污染土壤的环境风险主要是苯并[a]芘,TEQ达60.68%.17 representative soil samples and 1coal slack sample were collected in the surroundings of Luling Coal Mine in Huaibei Province,China.The concentrations of polycyclic aromatic hydrocarbons （PAHs）in the collected samples were detemined by gas chromatography equipped with a mass spectrometry detector（GC-MS）.The distribution and transportation behavior of PAHs were analyzed and the environmental impact of the PAHs in the soil of the coal mine was further evaluated.The results showed that the concentrations of 28PAHs in the collected soil samples ranged from 0.35to 6.21μg/g,with an average concentration of 1.69μg/g,among which 16PAHs are USEPA priority PAHs.The total contents of these 16PAHs ranged from 0.23to 3.53μg/g,with the average contents being 1.00μg/g.Compared with the relevant standards of organic pollutants in the soil,these typical regions were moderately or highly polluted according to the concentrations of∑16PAHs.It was further discovered that the sources of PAHs were gob piles and combustion of biomass.A toxicity assessment indicates that the environmental risks for PAHs are mainly BghiP whoseTEQ accounts for 60.68%of the total value.

关 键 词：芦岭矿区 土壤 PAHs(polycyclic AROMATIC hydrocarbons) 来源 

分 类 号：X131.3[环境科学与工程—环境科学]