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 6):149.
Determination of Organomercury in Water by LLE-HPLC-AFS
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
6 6
Page:
149
Column:
Date of publication:
2021-03-17
- Keywords:
- liquid-liquid extraction; high performance liquid chromatography; atomic fluorescence spectroscopy; methyl mercury; ethyl mercury; phenyl mercury
- 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.
Last Update:
2021-03-17