| 作物和土壤中DEHP测定的前处理 |
| 摘要点击 646 全文点击 625 投稿时间：1994-12-18 |
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| 中文关键词 DEHP 萃取 三氯甲烷 吸水剂 |
| 英文关键词 DEHP extraction CHCl3 absorbent |
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| 中文摘要 |
| 介绍农田土壤和农作物样品中微量DEHP测定的前处理方法。该法选用三氯甲烷为抽提液,加入吸水剂进行革取、抽提和浓缩。与北京、丹麦和美国等测试方法相比较,革取时间为0.5—0.7h,缩短了2—11h;溶剂用量为75—90ml,节省溶剂110—1200ml;操作简便、分离效果好;样品中DEHP的回收率除棉花籽实外,其余均达90%左右,变异系数约±3%。该法适宜在酞酸酯监测中推广应用。 |
| 英文摘要 |
| This paper deals with the pretreatment method for testing DEHP from farm soil and crops with CHCl3 as a solvent and with the absorbent. Campared with those from Beijing,Denmark and United States of America,this method took a short extracting time of 0.5—0.7h,2—11h shorter than others,and the solvent of 75—90ml,110—1200ml less than others. This method is easy to use and has a high effective separation. There was a DEHP recovery rate of about 90%,except for cotton seeds. The coefficient of variability was less than ±3%. It's very suitable to test phthalic acid esters. |
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