荧光光度法测定水中邻苯二甲酸二甲酯的研究  

FLUOROPHOTOMETRIC DETERMINATION OF DIMETHYL PHTHALATE IN WATER

作　　者：郎庆[1] 张明翠[1] 王琼娥[1] 庄惠生[1] 

机构地区：[1]东华大学环境科学与工程学院,上海200051

出　　处：《理化检验（化学分册）》2006年第4期243-244,251,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：国家自然科学基金资助项目(20277005)

摘　　要：基于在碱性条件下，吐温20对邻苯二甲酸二甲酯（DMPT）的荧光强度有增强作用，建立了用荧光分光光度法测定环境水样中DMPT的方法。此荧光反应的激发和发射波长为λex/λem=282／369nm，DMPT的检出限是0．01mg·L^-1，线性范围为0．02～7．0mg·L^-1，回收率在96．7%-106．5％之间。测定结果的RSD（n=7）为2．7％。Based on the fact that an enhancing effect on the fluorenscence intensity of dimethyl phthalate （DMPT） by the presence of Tween 20 in an alkaline solution, a method for the fluorophotometric determination of DMPT in water was established. The excitation and emission wavelengths of this fluorescence reaction were found to be 282 nm （λex） and 369 nm （λem）. Linear relationship between the magnitude of enhanced fluorescence intensity and the concentration of DMPT in the range of 0.02 7. 0 mg per L of solution. Recoveries in range from 96.7% to 106. 5% were obtained. Detection limit of the method was 0.01 mg · L^-1. RSD （n=7） of 2.7% was found in the analysis of water samples taken from the Suzhou Creek in shanghai.

关 键 词：荧光光度法 增强效应 荧光强度 邻苯二甲酸二甲酯 吐温-20 水样 

分 类 号：O657.31[理学—分析化学]