萃取法测定地表水中挥发酚时4-AAP提纯方法的改进  

Improvement of 4-AAP Purification in the Extraction Method for the Determination of Volatile Phenol in Surface Water

作　　者：樊霞[1] 

机构地区：[1]启东市环境监测站,江苏启东226200

出　　处：《污染防治技术》2013年第2期40-42,共3页Pollution Control Technology

摘　　要：对用氯仿代替弗罗里硅土提纯4-AAP溶液进行了探讨,试验表明,用4 mL氯仿萃取2.5%的4-AAP溶液2 min,静止分层,弃去有机相,再重复萃取一次,所得溶液用于测定挥发酚,空白试验的空白吸光度有较大降低;用于制作标准曲线时,其相关性较好,灵敏度较高;用于测定地表水样中的挥发酚,RSD<4.26%,加标回收率在90.7%～108%,满足监测分析要求。Using chloroform instead of florisil to purify 4 - AAP solution was discussed. The experiments showed that,using 4ml chloroform to extract the solution of 2.5% 4 - AAP for 2min, static stratication occured, then the organic phase was abandoned and the extraction time was repeated. The solution was uced for the determination of volatile phenol, the blank absorbance in blank test was greatly reduced. For the standard curve, the relevance was good and sensitivity was higher. For the determination of volatile phenol in surface water samples, the precision RSD was less than 4.26% and the recovery was 90.7% - 108% , which met the requirements of monitoring analysis.

关 键 词：萃取光度法 挥发酚 4-AAP 氯仿 地表水 

分 类 号：X832[环境科学与工程—环境工程]