Citation:
XING Fei, XI Hongbo, ZHOU Yuexi, XU Jixian, DAI Benhui, LI Wenjin, YANG Weihu. Analysis of Common Organic Acids in Petrochemical Wastewater by High Performance Liquid Chromatography[J]. Chinese Journal of Applied Chemistry,
;2013, 30(9): 1089-1095.
doi:
10.3724/SP.J.1095.2013.20528
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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%.
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