气相色谱-负化学电离源质谱法测定土壤中的多溴联苯醚  

Determination of Polybrominated Diphenyl Ethers in Soil by Gas Chromatogrphy-Negative Chemical Ionization-Mass Spectrometry

作　　者：金军[1] 刘伟志[2] 王英[2] 彭浩[2] 唐孝炎[1] 

机构地区：[1]北京大学环境学院,北京100087 [2]中央民族大学生命与环境科学学院,北京100081

出　　处：《化学通报》2007年第11期847-851,共5页Chemistry

基　　金：国家自然科学基金(20507023);中央民族大学985工程重点科研项目(CUN-985-3-3)资助

摘　　要：本文建立了气相色谱-负化学电离源质谱(GC-NCI-MS)法分析环境土壤及底泥样品中多溴联苯醚(PBDEs)的方法。样品采用索氏提取、多层硅胶柱分离纯化、内标法(BDE28、47、99、100、153、154、183)及同位素稀释法(BDE209)定量。上述定量的8种BDE同族体的方法回收率在96.7%～138.5%之间,相对标准偏差(RSD)为9.1%～22.3%(n=4)。应用该方法分析环境土壤及底泥样品的结果表明,8种所监测的PBDEs均被检出,土壤中PBDE浓度的总和为1437.6ng/g干重,底泥中为241.4ng/g干重,土壤和底泥中BDE209分别占PBDE浓度的总和的98.4%和92.7%。An analytical method for determination of polybrominated diphenyl ethers （PBDEs） in soil and sediment samples by Gas Chromatogrphy- Negative Chemical Ionization-Mass Spectrometry（GC-NCI-MS） was developed. It employed Soxhlet extraction, multilayer silica column for clean up, internal standard quantifying for BDE28,47,99,100,153,154,183 and isotope dilution techniques quantifying for BDE209. The recoveries of the method for mentioned eight BDE congeners ranged from 96.7 % to 138.5 %, and the relative standard deviation （RSD） ranged from 9.1% to 22.3 % （ n = 4）. All eight BDE congeners were detected in environmental soil and sediment samples by this method, the concentration of ∑8 PBDE in soil sample was 1437.6 ng/g dw, and 241.4 ng/g dw in sediment sample. Congener compositions were dominated by BDE209 （98.4% -92.7% ） with minor contributions from penta-and octa-BDEs.

关 键 词：多溴联苯醚 气相色谱-负化学电离源质谱 土壤样品 

分 类 号：X833[环境科学与工程—环境工程]