表面活性剂增敏分光光度法测定CPs-EES  

Determineation of CPs-EES by Surfactant-Sensitized Spectrophotometry

作　　者：邓学良[1] 李少旦[1] 李贵荣[1] 

机构地区：[1]南华大学公共卫生学院,湖南衡阳421001

出　　处：《南华大学学报（自然科学版）》2005年第4期7-10,共4页Journal of University of South China：Science and Technology

摘　　要：目的建立SDS胶束增敏光度法测定水中痕量CPs的新方法.方法研究了表面活性剂十二烷基硫酸钠(SDS)对H2O2-4-AAP-ST-H+-CPs体系光度法测定CPs的胶束增敏作用.以2,4-DCP为代表研究反应性能和条件.结果最大吸收波长为507nm,浓度线性范围为0.0226～0.626 μg/mL,2,4-DCP检出限为6.78×10-10g/mL.相对标准偏差小于2.72%,样品加标回收率为96.81%～99.27%.结论新建方法操作简便,灵敏度高,选择性,检测费用低.结合C18柱固相萃取分离技术,该法应用于实际水样中CPs的测定,结果满意.Objective To establish a new surfactant -sensitized spectrophotometry for the determination of trace chlorophenols environmental estrogens （ CPs - EES）. Metheds The new system of H2O2 - 4 - AAP - ST - H^＋ - CPs （2,4 - DCP） was selected, and the de- termination condition had been worked out. Results k = 507nm, the linear range was 0. 0226 - 0. 626 μg/mL, the determination limit 6.78 × 10^ -10 g/mL （ for 2,4 - DCP） , the relative standard deviation less than 2. 72%, and the recoveries from 96. 81% to 99.27%. Conclusion Combined with solid phase extractor （SPE）, the proposed method was used to determine CPs - EES （ including 2,4 - DCP etc. in environmental water with satisfactory results.

关 键 词：氯酚类环境雌激素 胶束增敏 分光光度法 

分 类 号：O657.31[理学—分析化学]