某市区内索氏提取-高效液相色谱法测定土壤中多溴联苯醚.doc

某地区土壤中多溴联苯醚的测定
摘要:多溴联苯醚(PBDEs)作为阻燃剂被广泛应用与工业生产中,其危害也正逐渐扩大。实验选取潮州市的两家鞋厂以及一处垃圾焚烧地中的土壤样品作为研究对象,采用索氏提取法提取土壤中有机物,加以浓硫酸净化再经过中性氧化铝柱进行纯化和分离,最后采用高效液相色谱法测定其中PBDEs的组成以及含量水平。结果表明:- mg/L之间,环境样品中浓度较低的PBDEs不能被检出;鞋厂一和鞋厂二附近的土壤样本共有四种该同系物被检出,分别是2,4,4’-三溴联苯醚、2,2',4,4'-四溴联苯醚、2,2',4,4',5-五溴联苯醚、2,2',4,4',5,6'-六溴联苯醚,其中鞋厂二土壤样本中2,2',4,4'-四溴联苯醚浓度最高,;垃圾焚烧地的土壤样本中PBDEs同系物检出率及浓度均较高。其中2,2',4,4'-。
关键词:多溴联苯醚;土壤;索氏提取;高效液相色谱法
Abstract:
Polybrominated diphenyl ethers (PBDEs), as a flame retardants are widely used in industrial production, the harm is also gradually expanding. We selected the soil of two shoe factory in chaozhou and a waste incineration as the research object, using the soxhlet extraction method to extract the anic matter, concentrated sulphuric acid for purificating neutral alumina column, then using high performance liquid chromatography (HPLC) method to determine position and their content of PBDEs level. The results showed that PBDEs homologue of instrument detection limit between mg/L, low concentration in the environmental samples PBDEs cannot be checked out; Shoe factories 1 and shoe factory 2 soil samples near a total of four kinds of the homologue was detected, respectively is 2,4,4 '- three bromine biphenyl ether, 2, 2', 4, 4 '- four bromine biphenyl ether, 2, 2', 4, 4 ', 5 - bromine biphenyl ether, 2, 2 ', 4, 4 ', 5, 6 '- bromine biphenyl ether, shoe factory in two soil samples of 2, 2', 4, 4 '- four bromine biphenyl ether concentration is highest, mg/Kg; Waste incineration in soil samples of PBDEs homologue were higher detection rate and concentration. 2, 2 ', 4, 4 '- detection of four bromine biphenyl ether concentration is mg/Kg.
Key words:Polybrominated diphenyl ether; Soil; Soxhlet extraction. High performance liquid chromatography
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