铅锌冶炼区农田土壤中多环芳烃污染特征、源解析和风险评价
发布时间：2018-09-17 07:33
【摘要】：采用快速溶剂萃取(ASE)、凝胶渗透色谱净化(GPC)协同高效液相色谱(HPLC)检测方法,分析贵州省典型铅锌冶炼区赫章县41个表层农田土壤样品中16种优控多环芳烃(PAHs)的含量水平,并对其污染特征、来源和生态风险进行了分析.结果表明:典型铅锌冶炼区妈姑镇农田土壤∑PAHs的含量范围为196~11592μg·kg~(-1),算术均值和中位值分别为1500μg·kg~(-1)和780μg·kg~(-1),妈姑镇高含量的∑PAHs积累可能与当地长时间的铅锌冶炼活动有关.PAHs组分特征表现出以2~3环和4环多环芳烃为主.根据荷兰土壤干预值,妈姑镇农田土壤96.6%受到了不同程度的污染,其中,轻微污染、中度污染和重度污染所占比例分别为31.0%、24.1%和41.5%.研究区域PAHs的主要来源为煤和生物质的不完全燃烧及石油源.妈姑镇的新厂村、何家冲村、平桥组、拱桥村及赫章县的达依乡采样点土壤中PAHs的TEQBap10超过了荷兰土壤干预值规定的TEQBap10限值33.0μg·kg~(-1),说明赫章县、尤其是赫章县典型铅锌冶炼区妈姑镇农田土壤已受到PAHs的污染,存在潜在的生态风险.
[Abstract]:Rapid solvent extraction (ASE),) gel permeation chromatography was used to purify (GPC) and high performance liquid chromatography (HPLC) was used to detect the contents of 16 kinds of superior polycyclic aromatic hydrocarbons (PAHs) in 41 topsoil samples in Hezhang County, Guizhou Province. The pollution characteristics, sources and ecological risks are analyzed. The results showed that the range of 鈭，
本文编号：2245173
[Abstract]:Rapid solvent extraction (ASE),) gel permeation chromatography was used to purify (GPC) and high performance liquid chromatography (HPLC) was used to detect the contents of 16 kinds of superior polycyclic aromatic hydrocarbons (PAHs) in 41 topsoil samples in Hezhang County, Guizhou Province. The pollution characteristics, sources and ecological risks are analyzed. The results showed that the range of 鈭，
本文编号：2245173
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