分光光度法直接测定油田水样交联剂中的铬  

Direct chromium determination of cross linking agent in water from oilfield by spectrophotometry

作　　者：崔炳文[1] 龚树鹏[2] 袁存光[1] 

机构地区：[1]中国石油大学化学化工学院,山东东营257061 [2]新疆独山子石化公司,新疆独山子833600

出　　处：《中国测试技术》2007年第5期72-73,共2页CHINA MEASUREMENT & TESTING TECHNOLOGY

摘　　要：研究了用过硫酸铵做氧化剂,将油田水样交联剂中的Cr3+氧化为Cr6+,然后用二苯碳酰二肼分光光度法直接测定的最佳条件。方法回收率93%以上,方法精密度(RSD%)平均3.9。取(2～3)mL水样时,过硫酸铵的最佳用量为0.4g。经对胜利油田水样的测定,并与原子吸收光度法对照,结果令人满意。Chromium （Ⅲ） in cross Linking agent of water from oilfield was oxidized to Chromium （Ⅵ） by oxidant ammonium persulfate, and chromium was determined with 1,5 -diphenylcarbohydrazide spectrophotometry method. Then testing conditions of this method were detail investigated. The experimental results showed that recovery of this approach was larger than 93 %, and its average precision expressed with RSD was 319 %. The optimum amount of oxidant was 0.4 g for 2 mL-3mL water. From application test for water from ShengLi oilfield and result comparisons with AAS, this approach was proved to be very useful for chromium determination of cross Linking agent in water from oilfield.

关 键 词：铬 过硫酸铵 二苯碳酰二肼 分光光度法 交联剂 直接测定 

分 类 号：TH744.12[机械工程—光学工程]