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Citation: HUANG Siyu, ZHOU Yaping, LI Zou, QIN Xiaoli, LIU Ying, XIE Qingji. Simultaneous HPLC Analysis of Five Environment Priority Pollutants of Phenols with a Wall-jet/thin-layer Amperometric Detector[J]. Chinese Journal of Applied Chemistry, ;2014, 31(1): 96-102. doi: 10.3724/SP.J.1095.2014.30086 shu

Simultaneous HPLC Analysis of Five Environment Priority Pollutants of Phenols with a Wall-jet/thin-layer Amperometric Detector

1.
Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research(Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China

Corresponding author: XIE Qingji,
Received Date: 4 February 2013
Available Online: 7 March 2013
Fund Project: 国家自然科学基金(21075036,21175042)资助项目 (21075036,21175042)

A self-fabricated wall-jet/thin-layer electrochemical detector(ECD) was developed by combining the classical wall-jet and thin-layer ECD,which is coupled to high-performance liquid chromatography for simultaneous determination of five priority pollutants of phenols.The results show that both the response current and the noise increase with the increase of electrode area,thus an appropriate electrode area is important for obtaining a good analytical performance at enhanced signal-to-noise ratio(S/N).By using SHIM-PACK VP-ODS(150 mm×4.6 mm) column,mobile phase of a mixture of methanol and 0.1 mol/L PBS(pH=7.5)(volume ratio is 40:60),oven temperature:40℃,flow rate:1 mL/min,injection volume:20 μL,detection potential:1.0 V,detection wavelength:220 nm,the limits of detection without preconcentration are all lower than 1.0 μg/L(S/N=3) for p-nitrophenol,phenol,m-cresol,2,4-dichlorophenol and 2,4,6-trichlorophenol,which are lower than those obtained with a UV detector and a commercial electrochemical detector.The method has been tested using river water samples with satisfactory results.
- high-performance liquid chromatography,
- amperometric detector,
- environment priority pollution phenols,
- signal-to-noise ratio,
- glassy carbon electrode
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