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Position: Home > Articles > Determination of Four Chlorobenzene Compounds in Waste Water by SPE-HPLC Journal of Anhui Agricultural Sciences 2013,41 (13) 5894-5896

固相萃取-高效液相色谱法测定废水中4种氯苯类有机污染物

作  者:
乐小亮;何娟;肖娇
单  位:
江苏省泰州市环境监测中心站
关键词:
废水;氯苯类化合物;高效液相色谱法;二极管矩阵紫外检测器;固相萃取
摘  要:
[目的]采用固相萃取-高效液相色谱法测定废水中4种氯苯类有机污染物。[方法]利用固相萃取技术,结合高效液相色谱法(PDA检测器)分析废水中4种氯苯类有机污染物,比较了ODS-C18、Sep-Park Vac Silica、Bond Elut CARBON、Bond Elut SI和Bond ElutPLEXA 5种SPE小柱对4种氯苯类的萃取效率,并系统研究了最佳萃取条件。[结果]氯苯、1,4-二氯苯和1,2,4-三氯苯的紫外检测波长为210 nm,而1,2-二氯苯的检测波长为224 nm;通过比较5种SPE小柱的萃取效率,发现ODS-C18小柱有很好的回收率。甲醇的最佳洗脱体积为4.0 ml;除氯苯外,其他氯苯类化合物的穿透体积都在1.0 L以上,而氯苯的穿透体积为250 ml,表明ODS-C18小柱对二氯苯和三氯苯具有很强的吸附性。在最佳萃取和测定条件下,该方法线性范围为0.005~0.100 mg/L,检出限为0.076~0.105μg/L,完全满足日常环境监测分析要求。[结论]该研究为氯苯类环境监测分析提供了参考。
译  名:
Determination of Four Chlorobenzene Compounds in Waste Water by SPE-HPLC
作  者:
YUE Xiao-liang et al(Taizhou Environmental Monitoring Center,Taizhou,Jiangsu 225300)
关键词:
Waste water;Chlorobenzenes;HPLC;PDA;SPE
摘  要:
[Objective] The study aims to determine four chlorobenzene compounds in waste water by SPE-HPLC.[Method] A method for determination of four chlorobenzene compounds in waste water by solid phase extraction with HPLC-PAD detection was investigated,then the extraction efficiency of four chlorobenzene compounds by five SPE columns(ODS-C18,Sep-Park Vac Silica,Bond Elut CARBON,Bond Elut SI and Bond Elut PLEXA) was compared,finally the optimal extraction conditions were discussed.[Result]The UV detection wavelength of chlorobenzene,1,4-DCB and 1,2,4-TCB was 210 nm,but that of 1,2-DCB was 224 nm.Among the five SPE columns,ODS-C18 column has the best recovery.4.0 ml methanol is as eluting solvent;the breakthrough volume of most compounds is above 1.0 L,but that of chlorobenzene is 250 ml,showing that ODS-C18 column has a strong adsorption to dichlorobenzene and trichlorobenzene.Under the optimized conditions,the linear range was 0.005-0.100 mg/L,and the detection limit was 0.076-0.105 μg/L,which fully meets the requirements of daily environmental monitoring and analysis.[Conclusion]The research can provide references for monitoring and analysis of chlorobenzene compounds.

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