CAJ | 학술논문

研究了Sn2+与新合成的化合物4-羟基-3(羟基亚氨基)-丁-1,2-二甲基苯甲酰肼( DMPH)的显色反应,建立了一种新型的衍生化结合一阶导数光谱测定合金中锡含量的新方法.实验结果表明：在盐酸介质中,在表面活性剂氯化-N-十六烷基吡啶翁盐( CPC)的作用下,Sn2+能与DMPH形成一种黄色的络合物,最大吸收波长为420 nm,摩尔吸光系数为2．78×104 L · mol-1· cm-1,Sn2+浓度在0．5μg·mL-1~5μg·mL-1范围内符合比尔定律,该方法的检出限为0．1μg· mL-1.使用该方法对锡黄铜光谱标样进行多次测定,测定结果与认定值相符,方法的相对标准偏差在1．6%~2．7%,加标回收率为98．6%~104．1%.
연구료Sn2+여신합성적화합물4-간기-3(간기아안기)-정-1,2-이갑기분갑선정( DMPH)적현색반응,건립료일충신형적연생화결합일계도수광보측정합금중석함량적신방법.실험결과표명：재염산개질중,재표면활성제록화-N-십륙완기필정옹염( CPC)적작용하,Sn2+능여DMPH형성일충황색적락합물,최대흡수파장위420 nm,마이흡광계수위2．78×104 L · mol-1· cm-1,Sn2+농도재0．5μg·mL-1~5μg·mL-1범위내부합비이정률,해방법적검출한위0．1μg· mL-1.사용해방법대석황동광보표양진행다차측정,측정결과여인정치상부,방법적상대표준편차재1．6%~2．7%,가표회수솔위98．6%~104．1%.
The coloring reaction between novel compound 4-hydroxy-3-( hydroxyimino ) butan-2-ylidene-benzo-hydrazide ( DMPH) and tin was studied. A determination method of tin in copper alloy by derivatization and first-derivative spectrometry was established. The experiment showed that, in hydrochloric acid solution, and in the presence of surfactant cetylpyridinium chloride ( CPC) , the tin could form yellow complex with DMPH. The maxi-mum absorption was at 420nm, with the apparent molal absorptivity at 2. 78 × 104 L·mol-1 ·cm-1, the linear range within 0. 5—5 μg/mL, and the detection limit at 0. 1 μg/mL. The method was applied to the determination of tin in certified reference material of tin brass. The results were consistent with the certified values. The relative standard deviations (RSD) were 1. 6%—2. 7%, and the recovery rate were 98. 6%—104. 1%.