土壤样品中酞酸酯含量分析的前处理研究——提取液浓缩过程与净化的影响  

PRETREATMENT OF SOIL SAMPLES FOR ANALYSIS OF PHTHALATE ESTERS THEREIN——EFFECT OF CONCENTRATION AND PURIFICATION OF THE EXTRACT

作　　者：陈永山[1,2] 骆永明[1,2] 章海波[1] 宋静[1] 黄玉娟[1] 

机构地区：[1]中国科学院土壤环境与污染修复重点实验室(南京土壤研究所),南京210008 [2]中国科学院研究生院,北京100049

出　　处：《土壤学报》2011年第2期311-319,共9页Acta Pedologica Sinica

基　　金：国家水体污染控制与治理科技重大专项课题(2008ZX07101-006-05;2008ZX07101-006-06);中国科学院"优秀博士学位论文;院长奖获得者科研启动专项资金"资助

摘　　要：通过比较索氏提取和超声提取这两种提取土壤酞酸酯的方法,认为从提高回收率和降低背景干扰角度出发,超声提取法更合适作为土壤酞酸酯分析的前处理。针对超声提取过程中的一些操作步骤的细节做了比较研究,表明提取液不蒸干可减少酞酸酯的挥发损失,提取液过净化柱与否对GC-MS分析多数酞酸酯组分影响不大,不过净化柱处理可提高土壤酞酸酯的分析效率,但土壤中过多的色素干扰可能会影响某些组分(如邻苯二甲酸二(2-乙基)己酯)的分析结果。PAEs （phthalate esters） pollution of farmland soils is frequently reported in China recently and has aroused wide concern among scientists due to its function of disrupting endocrine in human body and animal. Ultrasonic extraction and Soxhlet extraction of PAEs were performed from soils artificially contaminated with PAEs. Results show that the former is fitter to be used in pretreatment of the soil samples for PAEs analysis from the aspect of its higher recovery rate and lower background interference. A comparative study of its operating procedure in detail was carried out, revealing that exclusion of the process of drying the extract in the rotating evaporator eould reduce loss of the compound from volatilization, and the process of purifying the extraet did not affect much the result of GC-MS analysis of most PAEs. Instead, purification improved cffieiency of the PAEs analysis, however, too much interference from pigment might have some influence on accuracy of the analysis of some of its components, like Bis（2-ethylhexyl） phthalate （ DEHP）.

关 键 词：酞酸酯 索氏提取 超声提取 土壤 

分 类 号：X53[环境科学与工程—环境工程]