流动注射—胶束增溶分光光度法间接测定泥浆滤液中K^+浓度  

THE INDIRECT DETERMINATION OF K^+ IN MUD FILTRATE BY FIA-MILELLER-SOLUBILIZATION SPECTROPHOTOMETRY

作　　者：赵黎安[1] 孙维林[1] 岳慧灵[2] 

机构地区：[1]大庆石油学院开发系 [2]东北电力学院应用化学系

出　　处：《大庆石油学院学报》1992年第1期32-37,共6页Journal of Daqing Petroleum Institute

摘　　要：建立了间接测定泥浆滤液中K^+浓度的流动注射胶束增溶分光光度方法。首先将泥浆滤液中的钾离子转变成亚硝酸钴钠钾[K_2N_aCo(N0_2)6]沉淀,洗涤沉淀并用盐酸溶解,然后测定溶液中的Co(Ⅱ)离子浓度,根据Co(Ⅱ)离子浓度计算出泥浆滤液中的K^+浓度。详细讨论了影响测定结果的因素,根据实验结果确定了最佳测定实验条件及仪器参数。探作简便,重现性好,试剂及样品耗量小,测定结果的相对标准偏差RSD<1.3%,检出限为50ppm。A method of indirect determination of K^+ concentration of mud fil- trate was established. The K^+ concentration can be calculated in accor- dance with the ion concentration of Co (Ⅱ) transformed in the given reactions being developed. The factors affected to the measurement re- sult were discussed in detail, and the optimum experimental conditions and the instrument parameters were determined on the basis of experi- ment results. The method mentioned above is very easy to proceed, it is easy to duplicate, aud it is necessary to consume only a few chemicals. and samples for the measurement.

关 键 词：流动注射 钾离子 钴离子 

分 类 号：TE254.1[石油与天然气工程—油气井工程]