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0.45μm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1.0mL/min,ZORBAX-SB—C18色谱柱,柱温30℃,MWD检测器,检测波长195nm,进样量10μL。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0.050mg/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%。
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. 45μm 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 10μL. 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%.
出处
《应用化学》
CAS
CSCD
北大核心
2013年第9期1089-1095,共7页
Chinese Journal of Applied Chemistry
基金
国家水体污染控制与治理科技重大专项(2008ZX07207-004)
关键词
高效液相色谱
丙烯酸
甲基丙烯酸
对甲基苯磺酸
high performance liquid chromatography, acrylic acid, methacrylic acid,p-toluenesulfonic acid