分析测试学报2011，Vol.30Issue(8)：912-916,5.DOI:10.3969/j.issn.1004-4957.2011.08.016
超声微波协同萃取/气相色谱法测定土壤中的多溴联苯醚
Determination of Polybrominated Diphenyl Ethers in Soil by Ultrasound/Microwave Assisted Extraction and GC/ECD
摘要
Abstract
An ultrasound/microwave assisted extraction and gas chromatography with electron capture detector ( GC/ECD) was developed for the simultaneous determination of seven polybrominated di phenyl ethers( PBDEs) in soil. The influences of several parameters, such as the type and dosage of solvent, microwave power and time of extraction, on the extraction efficiencies were investigated. The optimal operation conditions were as follows; extraction solvent; 50 mL n-hexane - acetone (1 : 1), microwave power; 90 W, and extraction time; 10 min. Under the optimal extraction con ditions, good linear relationships were obtained in the concentrations of 10 -400 μg ? L-1 for all the analytes with correlation coefficients(r2) of 0. 999 1-0. 999 7. The limits of detection were between 0. 21 ng ? G-1 and 0. 63 ng ? G-1. The spiked recoveries of PBDEs in soil were between 75% and 121% with relative standard deviations (RSDs) of 5. 2% -7. 8% . The proposed method was applied in the determination of PBDEs in wetland soil samples collected from Chongming Island of Shanghai, in which two PBDEs (e. G. BDE-28 and BDE-47) were found. The results were in agreement with those obtained by the Soxhlet - GC method. With the advantages of simple procedures, good sensitivity and high accuracy, this method could be used for the monitoring of PBDEs in soils.关键词
超声微波协同萃取/气相色谱/土壤/多溴联苯醚Key words
ultrasound/microwave assisted extraction/ gas chromatography/ soil/ polybrominated diphenyl ethers( PBDEs)分类
化学化工引用本文复制引用
王丹丹,黄卫红,杨岚钦..超声微波协同萃取/气相色谱法测定土壤中的多溴联苯醚[J].分析测试学报,2011,30(8):912-916,5.基金项目
国家自然科学基金资助项目(2090407) （2090407）
