[1]马飞攀,文胜,张济龙,等.液液萃取/液相色谱/原子荧光光谱法测定水中有机汞[J].中国给水排水,2021,37(6):149.
　MA Fei-pan,WEN Sheng,ZHANG Ji-long,et al.Determination of Organomercury in Water by LLE-HPLC-AFS[J].China Water & Wastewater,2021,37(6):149.
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液液萃取/液相色谱/原子荧光光谱法测定水中有机汞

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第37卷 期数: 2021年第6期 页码: 149 栏目: 出版日期: 2021-03-17
Title:
Determination of Organomercury in Water by LLE-HPLC-AFS
作者:
马飞攀1,文胜2,张济龙1,刘真1,周玉洁1,穆乃花2,李方明1,张卫威1
(1.四川省地质工程勘察院集团有限公司，四川成都610072；2.四川省天晟源环保股份有限公司，四川成都610037)
Author(s):
MA Fei-pan1，WEN Sheng2，ZHANG Ji-long1，LIU Zhen1，ZHOU Yu-jie1，MU Nai-hua2,LI Fang-ming1，ZHANG Wei-wei1
(1. Sichuan Iinstitute of Geological Engineering Investigation Group Co. Ltd.， Chengdu 610072， China； 2. Sichuan Tianshengyuan Environmental Services Co. Ltd., Chengdu 610037， China)
关键词:
液液萃取; 高效液相色谱; 原子荧光; 甲基汞; 乙基汞; 苯基汞
Keywords:
liquid-liquid extraction; high performance liquid chromatography; atomic fluorescence spectroscopy; methyl mercury; ethyl mercury; phenyl mercury
摘要:
建立了水中有机汞（甲基汞、乙基汞、苯基汞）的液液萃取/反萃取/液相色谱/原子荧光光谱测定方法。水样经二氯甲烷萃取后，经半胱氨酸-乙酸铵溶液反萃取，采用高效液相色谱-原子荧光光谱联用法检测水中甲基汞、乙基汞和苯基汞。甲基汞和乙基汞标准曲线线性范围为1~100 μg/L，苯基汞线性范围为5~100 μg/L，3种有机汞校准曲线相关系数均不小于0.999 7。甲基汞、乙基汞和苯基汞的方法检出限分别为0.20、0.40和1.00 ng/L，实际样品加标回收率范围为69.5%~91.0%，相对标准偏差(RSD)范围为6.2%~13.5%。该方法操作简便、成本低、准确可靠、检出限低，适用于水样中甲基汞、乙基汞和苯基汞的测定。
Abstract:
A method based on liquid-liquid extraction (LLE)/back extraction/high performance liquid chromatography(HPLC)/atomic fluorescence spectroscopy(AFS) was developed for the determination of organomercury(methyl mercury/ethyl mercury/phenyl mercury) in water. The extraction of the water sample was performed on LLE using dichloromethane. The dichloromethane was then extracted by cysteine-ammonium acetate solution. Methyl mercury, ethyl mercury and phenyl mercury in water were determined by HPLC-AFS. The results showed that good linearities were observed in the ranges of 1-100 μg/L(methyl mercury and ethyl mercury) and 5-100 μg/L(phenyl mercury) with the correlation coefficient ≥0.999 7. The method detection limit(MDL) of methyl mercury/ethyl mercury/phenyl mercury was 0.20 ng/L, 0.40 ng/L and 1.00 ng/L respectively. The recoveries were between 69.5%-91.0%. The relative standard diviation (RSD, n=6) was 6.2%-13.5%. The method is simple, low-cost, accurate and reliable with low detection limit and suitable for the determination of methyl mercury/ethyl mercury/phenyl mercury in water.

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更新日期/Last Update: 2021-03-17