有机溶剂萃取-火焰原子吸收法测定丁基黄原酸

Organic solvent extraction-flame atomic absorption spectrophotometry for determining butyl xanthate

研究用火焰原子吸收分光光度法间接测定丁基黄原酸的方法,依据铜试剂亚铜分光光度法的萃取原理,直接将萃取后的有机溶剂进原子吸收雾化器进行测定。通过优化仪器条件,选取最佳的萃取溶剂为环己烷、萃取体积为4 m L,并向萃取后的环己烷以体积比2/1加入MIBK,增加提升量;硫离子干扰实验表明Cs2-<1μg/L不对测定产生干扰。应用最优条件对实际样品进行加标回收实验,回收率良好,结果表明与铜试剂亚铜分光光度法相比,该方法可以有效避免样品本体颜色的干扰,且操作简便,可用于地表水及水源水中丁基黄原酸测定。

This paper is related to the indirect determination of butyl xanthate through flame atomic absorption spectrophotometry. After extraction, an organic solvent was determined in an atomic absorption atomizer based on the extraction principle of diethyldithiocarbamate(DDTC)spectrophotometry. Instrument conditions were considered and the best extraction solvent, lifting capacity and extraction volume selected for carrying out sulfion interference experiments. Practical samples were determined under optimum conditions and recovery ranges were acceptable. The experiment results show that this method is much easier to operate and more efficient to prevent sample color interference compared to the DDTC spectrophotometry.