Stir bar sorptive extraction (SBSE), a novel extraction technique for aqueous samples: Theory and principles†
Stir bar sorptive extraction (SBSE), a novel extraction technique for aqueous samples: Theory and principles†
复制标题
DOI：
10.1002/(sici)1520-667x(1999)11:10
复制
发表时间：
1999
期刊：
影响因子：
--
通讯作者：
E. Baltussen;P. Sandra;F. David;C. Cramers
中科院分区：
文献类型：
--
作者：
E. Baltussen;P. Sandra;F. David;C. Cramers
介绍了一种新的样品富集方法--涂有聚二甲基硅氧烷（PDMS）的搅拌棒吸附萃取（SBSE）的理论和实践。分别使用涂有55 μ L和219 μL PDMS液相的10 mm和40 mm长的搅拌棒。10 mm搅拌棒最适合搅拌10至50 mL的样品体积，而40 mm搅拌棒更适合搅拌250 mL的样品体积。取决于样品体积和搅拌速度，典型的平衡搅拌时间为30和60分钟之间。SBSE的性能说明与分析的挥发性和半挥发性的微量污染物从水溶液样品。对于EPA优先污染物清单中的多种分析物，包括从1，1，1-三氯乙烷到三氯甲烷的挥发性分析物，使用质量选择性检测的检测限在低ng/L范围内。对于从200 mL样品中提取选定化合物，在选定离子监测模式下达到低于0.1 ng/L的检测限。比较了SBSE和固相微萃取的优缺点。©1999 John Wiley & Sons，Inc. J Micro Sep 11：737-747，1999
The theory and practice of a novel approach for sample enrichment, namely the application of stir bars coated with the sorbent polydimethylsiloxane (PDMS) and referred to as stir bar sorptive extraction (SBSE) are presented. Stir bars with a length of 10 and 40 mm coated with 55 and 219 μL of PDMS liquid phase, respectively were applied. The 10-mm stir bars are best suited for stirring sample volumes from 10 up to 50 mL whereas 40-mm stir bars are more ideal for sample volumes up to 250 mL. Depending on sample volume and the stirring speed, typical stirring times for equilibration are between 30 and 60 min. The performance of SBSE is illustrated with the analysis of volatile and semivolatile micropollutants from aqueous samples. Detection limits using mass selective detection are in the low ng/L range for a wide selection of analytes from the EPA priority pollutant lists including analytes ranging in volatility from 1,1,1-trichloroethane to chrysene. For the extraction of selected compounds from 200-mL samples, detection limits below 0.1 ng/L are reached in the selected ion monitoring mode. A comparison between SBSE and solid-phase microextraction is made. ©1999 John Wiley & Sons, Inc. J Micro Sep 11: 737–747, 1999