顶空固相微萃取气质联用法测定地表水中2-甲基萘
Determination of 2-Methylnaphthalene in Surface Water by Headspace Solid-Phase Micro Extraction-Chromatography-Mass Spectrometry
DOI: 10.12677/AEP.2023.133080, PDF,    科研立项经费支持
作者: 沈 毅, 朱英俊*, 吴小彬, 陈 峰, 张宝锋：浙江省杭州生态环境监测中心，浙江 杭州
关键词: 2-甲基萘；地表水；固相微萃取；气质联用；顶空；2-Methylnaphthalene； Surface Water； Solid-Phase Micro Extraction； GC-MS； Headspace
摘要: 建立了顶空固相微萃取气质联用法测定地表水中2-甲基萘的方法。优化了色谱质谱条件和固相微萃取条件，比如色谱柱、萃取头、水样pH、萃取时间与温度。结果表明本方法在50~1000 ng/L线性范围具有良好的线性，r > 0.9991，2-甲基萘检出限为8.9 ng/L；3个加标水平下，实际水样中2-甲基萘的加标平均回收率为85.6%~91.4%，相对标准偏差为5.8%~9.8%。本方法可简便、准确地测定地表水中痕量2-甲基萘。
Abstract: A method was established to determine 2-methylnaphthalene in surface water by headspace sol-id-phase micro extraction-chromatography-mass spectrometry. The analytical conditions of chro-matographic-mass spectrometry and solid-phase microextraction were optimized, such as chro-matographic column, SPME fiber, pH of water sample, extraction time and temperature. The results indicate that，the calibration curve shows a good linearity for 2-methylnaphthalene (r > 0.9991) in the range of 50~1000 ng/L. the detection limit of 2-methylnaphthalene is 8.9 ng/L when using 10.0 mL surface water sample．At 3 different concentration levels, the average recoveries of 2-meth- ylnaphthalene in spiked practical surface water sample are in the range of 85.6%~91.4% with relative standard deviation of 5.8%~9.8%. The modified method can simply and accurately monitor 2-methylnaphthalene in surface water.
文章引用：沈毅, 朱英俊, 吴小彬, 陈峰, 张宝锋. 顶空固相微萃取气质联用法测定地表水中2-甲基萘[J]. 环境保护前沿, 2023, 13(3): 649-654. https://doi.org/10.12677/AEP.2023.133080

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