Xing Han-Zhu, Chen Xiang-Feng, Wang Xia, Wang Ming-Lin, Zhao Ru-Song
Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Analysis and Test Center, Shandong Academy of Sciences, Jinan, 250014, China.
Anal Bioanal Chem. 2014 Jun;406(15):3787-93. doi: 10.1007/s00216-014-7771-2. Epub 2014 Apr 20.
This study aims to investigate the feasibility of etched sand particles being used as solid-phase extraction adsorbents to enrich polychlorinated biphenyls (PCBs), which are typical persistent organic pollutants in the environment, at trace levels. Gas chromatography-tandem mass spectrometry was selected to detect the compounds. Etched sand particles exhibited excellent merits on the enrichment of PCBs. Related important factors affecting extraction efficiencies were investigated and optimized in detail. Under optimized conditions, low limits of detection (0.42 to 3.69 ng L(-1)), wide linear range (10 to 1,000 ng L(-1)), and high repeatability (1.9 to 8.2%) were achieved. The developed method was validated with several real water samples, and satisfactory results were obtained. All of these findings indicate that etched sand particles would be useful for the enrichment and determination of organic pollutants at trace levels in water samples.
本研究旨在探讨蚀刻砂粒作为固相萃取吸附剂富集环境中典型持久性有机污染物多氯联苯（PCBs）痕量水平的可行性。选用气相色谱 - 串联质谱法检测这些化合物。蚀刻砂粒在富集多氯联苯方面表现出优异的性能。详细研究并优化了影响萃取效率的相关重要因素。在优化条件下，实现了低检测限（0.42至3.69 ng L(-1)）、宽线性范围（10至1,000 ng L(-1)）和高重复性（1.9至8.2%）。所建立的方法用几种实际水样进行了验证，并获得了满意的结果。所有这些结果表明，蚀刻砂粒将有助于富集和测定水样中痕量水平的有机污染物。
