中文摘要：

建立了固相萃取-高效液相色谱法（SPE—HPLC）测定地表水中三嗪类化合物的方法。考察了4种不同固相萃取柱对三嗪类化合物的吸附效果，最终选择ENVI—18固相萃取柱用于萃取地表水中的三嗪类化合物；系统研究了环境水样中三嗪类化合物的最佳固相萃取条件，选择洗脱溶剂为甲醇，洗脱溶剂用量5mL，水样在萃取前不需要添加甲醇，不调节pH值。测定了方法的检测限，结果表明，扑草净、莠去津、西玛津、脱乙基莠去津、羟基化莠去津和脱异丙基莠去津的最低检测限依次为0．14μg/L，0．12μg／L，0．08μg/L，0．08μg／L，0．10μg/L和0．18μg／L。将该法应用于实际环境水样的分析测定，结果表明某湖水中扑草净的含量为（9．33±0．27）μg/L，某江水中莠去津和扑草净的含量分别为（5．28±0．43）μg／L和（7．12±0．54）μg／L。

英文摘要：

A method was developed to monitor triazines in surface water using the combination of solid phase extraction （ SPE ） and high performance liquid chromatography. Four different SPE cartridges were tested for extracting six triazines, including atrazine （A）, simazine （S）, prometryn （ P）, desethylatrazine （ DEA）, 2-hydroxyatrazine （OHA） and desisopropylatrazine （DIA）, and finally ENVI-18 was selected as optimal. The method for solid phase extraction was further systematically studied for details. Optimal results of orthogonal design were determined as follows： pH 6, 5 mL methanol as eluting solvent, and no methanol added into water sample before extraction. The detection limits of six triazines were 0. 14 μg/L for P, 0. 12 μg/L for A, 0.08 μg/L for S, 0.08 μg/L for DEA, 0. l0 μg/L for OHA and 0.18 μg/L for DIA. This method was applied for environmental aquatic samples, and the results showed that the concentration of prometryn in a lake was detected as （9.33 ± 0.27） μg/L, as well as the concentrations of atrazine and prometryn in a river were detected as （5.28 ±0. 43） μg/L and （7. 12 ± 0.54） μg/L respectively.