以ZIF-8为固相微萃取涂层分析环境水样中痕量多溴联苯醚 |
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基金项目:国家自然科学基金(21477068);山东省重点研发项目(2015GSF117011);山东省自然科学基金(ZR2015YL003,ZR2016YL003) |
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中文摘要:将沸石咪唑酯骨架材料(ZIF-8)制成固相微萃取涂层,结合气相色谱-三重四极杆串联质谱联用仪(GC-MS/MS),建立了一种快速灵敏分析环境水样中6种痕量多溴联苯醚的方法。采用单因素优化实验得到的最优条件为:不添加NaCl,萃取温度为50 ℃,萃取时间为50 min,pH值为70,解吸时间和解吸温度分别为5 min和280 ℃。在最优条件下,该方法测定水样中多溴联苯醚的线性范围为1~1 000 ng/L,检出限为008~229 ng/L,定量下限为023~732 ng/L。日内和日间相对标准偏差分别为43%~65%和69%~93%。将该方法应用于4种实际环境水样(自来水、泉水、池塘水和垃圾填埋场废水)中多溴联苯醚的检测,回收率为816%~109%。 |
中文关键词:沸石咪唑酯骨架材料-8 多溴联苯醚 固相微萃取(SPME) 气相色谱-串联质谱(GC-MS/MS) |
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Analysis of Polybrominated Diphenyl Ethers in Environmental Water Samples Using Zeolitic Imidazolate Framework-8 as Solid Phase Microextraction Coating |
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Abstract:A rapid and sensitive method was developed for the analysis of 6 polybrominated biphenyl ethers(PBDEs) at trace levels in environmental water samples by gas chromatography-tandem mass spectrometry(GC-MS/MS) with a synthesized zeolite imidazolate framework-8(ZIF-8) as solid phase microextraction coating.The experimental conditions were optimized with single factor tests,and the optimal conditions were as follows:extraction time:50 min,extraction temperature:50 ℃,pH value:70,desorption temperature:280 ℃,desorption time:5 min,and without salt addition.Under the optimized conditions,the calibration curves for 6 PBDEs were linear in the range of 1-1 000 ng/L with limits of detection and limits of quantitation of 008-229 ng/L and 023-732 ng/L,respectively.The intra day and inter day RSDs were in the range of 43%-65% and 69%-93%,respectively.This method was successfully applied in the analysis of PBDEs in 4 environmental water samples(tap water,spring water,pond water and landfill waste water) with recoveries of 816%-109%. |
Key Words:zeolite imidazolate framework-8 polybrominated biphenyl ethers(PBDEs) solid phase microextraction(SPME) gas chromatography-tandem mass spectrometry(GC-MS/MS) |
引用本文:李振,周家斌,王霞,赵汝松.以ZIF-8为固相微萃取涂层分析环境水样中痕量多溴联苯醚[J].分析测试学报,2018,37(8):871-878. |
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