石化废水中常见有机酸的液相色谱分析

doi:10.3724/SP.J.1095.2013.20528

摘要/Abstract

摘要： 利用高效液相色谱(HPLC)法同时检测石化废水中丙烯酸、对甲基苯磺酸、甲基丙烯酸。水样调节pH=1.6，经0.45 μm醋酸纤维滤膜过滤后直接进行色谱分析。色谱条件：流动相为体积比93∶7的磷酸盐缓冲溶液(pH=3)和乙腈，流速1.0 mL/min，ZORBAX-SB-C18色谱柱，柱温30 ℃，MWD检测器，检测波长195 nm，进样量10 μL。丙烯酸、对甲基苯磺酸、甲基丙烯酸的最低检出限分别为0.030、0.028和0.050 mg/L；样品测定的相对标准偏差分别为1.83%、0.69%和0.84%；样品加标回收率96%~112%。

关键词: 高效液相色谱, 丙烯酸, 甲基丙烯酸, 对甲基苯磺酸

Abstract: High performance liquid chromatography(HPLC) was used for simultaneous detecting acrylic acid, methacrylic acid and p-toluenesulfonic acid in petrochemical wastewater. The pH of the water sample was adjusted to 1.6, and then solution was filtered with 0.45 μm cellulose acetate membrane before chromatographic analysis. The optimized chromatographic conditions are as follows: phosphate buffer solution(pH=3.0)/acetonitrile(volume ratio is 93∶7) as the mobile phase, flow rate=1.0 mL/min, ZORBAX-SB-C18 column, temperature=30 ℃, MWD detector with detection wavelength at 195 nm, and the injection volume of 10 μL. Under the optimal conditions, the detection limit of acrylic acid, p-toluenesulfonic acid and methacrylic acid is 0.030, 0.028 and 0.050 mg/L, respectively. The relative standard deviations of the samples are 1.83%, 0.69% and 0.84%, respectively, while the recoveries are in the range from 96% to 112%.

Key words: high performance liquid chromatography, acrylic acid, methacrylic acid, p-Toluenesulfonic acid

中图分类号:

O621

邢飞, 席宏波, 周岳溪, 许吉现, 戴本慧, 李文锦, 杨卫华. 石化废水中常见有机酸的液相色谱分析[J]. 应用化学, DOI: 10.3724/SP.J.1095.2013.20528.

XING Fei1,2, XI Hongbo2, ZHOU Yuexi2*, XU Jixian1, DAI Benhui1,2, LI Wenjin1,2, YANG Weihua1. Analysis of Common Organic Acids in Petrochemical Wastewater by High Performance Liquid Chromatography[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2013.20528.

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