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新试剂N-烯丙基-N~/-安替比林基硫脲光度法测定矿样中微量金

Spectrophotometric Determination of Au(III) with N-allyl-N~/-antipyryl Thiourea(AATu)

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【作者】 李英张玉泉张焱马东兰王玉炉

【Author】 LI Ying1,ZHANG Yuquan1,ZHANG Yan 1,MA Donglan2,WANG Yulu2(1.Henan Institute of Science and Technology,Xinxiang,Henan 453003,China;2.Henan Normal University,Xinxiang,Henan 453002,China)

【机构】 河南科技学院河南师范大学河南师范大学 河南新乡453003河南新乡453003河南新乡453002

【摘要】 研究了新试剂N-烯丙基-N/-安替比林基硫脲与Au(III)的显色反应。结果表明在pH=3.8~4.4的HAc-NaAc缓冲体系中,Au(III)与该试剂形成1∶2的络合物,其最大吸收峰位于275.0nm,表观摩尔吸光系数ε275.0=2.39×104Lˇmol-1ˇcm-1,Au(III)含量在0~24.0μg/25mL内服从比尔定律。方法操作简便,选择性高。用于金矿石中微量金的测定,结果令人满意。

【Abstract】 The coloration reaction of Au(III) and AATu was studied in the present paper.It was found that under conditions of pH = 4.0 HAc-NaAc buffer solution,a stable complex is formed,the maximum absorbance appears at 275.0nm and its apparent molar absorptivity is 2.39×104 L?mol-1?cm-1,Beer’s law is obeyed in the range of 0~24.0μg/25mL Au(III).The new reagent AATu has been applied to determine gold(III) in the ores with agreeable results.

【基金】 新乡市科技局科技攻关(04G075);河南科技学院科技攻关资助项目
  • 【分类号】P575.3
  • 【被引频次】9
  • 【下载频次】65
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