根系分泌物体系中五氯酚测定方法研究  

Determination of Pentachlorophenol in Root Exudates of Sunflower by Ultraviolet Spectrophotometric Method

作　　者：王瑾[1] 康春莉[1] 周明娟[1] 郭平[1] 

机构地区：[1]吉林大学环境与资源学院化学学院,长春130012

出　　处：《科学技术与工程》2008年第18期5133-5136,共4页Science Technology and Engineering

基　　金：国家自然科学基金(20577014);吉林省环保局项目(吉环科字第2007-15)资助

摘　　要：以向日葵（Helianthus annnus）的根系分泌物为研究对象，建立了采用紫外分光光度法测定根系分泌物中疏水性有机污染物PCP方法。实验结果如下：最佳吸收波长为215nm；标准曲线方程为Y=0．1269X＋0．1193，r=0．9997；方法检出限为0．025mg／L；样品加标回收率为61．01％～104．98％，相对标准偏差低于0．3％。可见，利用此方法测定根系分泌物体系中PCP具有灵敏度高、准确度好、操作简单、快捷，重复性好等优点，适宜于研究植物修复过程中五氯酚的批量测定。Taking the root exudates of sunflower as study object, the determination of the hydrophobic organic pollutants PCP in root exudates was set up by UV spectrophotometer. Results as follows ：the best determing wavelength was 215 nm, the linear regressive equation was Y = 0. 126 9X ＋0. 119 3, the correlation coefficient r was 0. 999 7 ; the detection limit were 0. 025 mg/L; the recovery range was 78.48% - 103.93% ,the relative standard division （RSD） obtained was less than 3% （n = 6）. This method is convenient, fast and good reproducibility, sensitivity and accuracy, it＇ s applicable for bath determination of pentachlorophenol in the course of study its phytoremediation.

关 键 词：五氯酚 根系分泌物 紫外分光光度计 

分 类 号：O265.311[理学—数学]