| KBH_4-AgNO_3分光光度法测定3861催化剂中砷 |
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| 引用本文： | 杜海燕.KBH_4-AgNO_3分光光度法测定3861催化剂中砷[J].北京工商大学学报(自然科学版),1998(3). |
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| 作者姓名： | 杜海燕 |
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| 作者单位： | 北京轻工业学院化学工程系!北京100037 |
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| 摘 要： | 研究了硼氢化钾－硝酸银分光光度法测定3861双金属重整催化剂中砷含量时共存组分的影响．讨论了硫脲络合掩蔽剂的用量及加入顺序．消除了2mg铂的干扰；改换成盐酸介质，调整酸度为3mol／L，消除了3．5mg锡的干扰．对几批催化剂样品中砷的测定，相对标准偏差小于7．5％，加标回收率在103％～107％．
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| 关 键 词： | 砷化氢 重整催化剂 分光光度法 |
DETERMINATION OF ARSENIC IN 3861CATALYST BY POTASSIUM BOROHYDRIDESILVER NITRATE SPECTROPHOTOMETRY |
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| Du Haiyan.DETERMINATION OF ARSENIC IN 3861CATALYST BY POTASSIUM BOROHYDRIDESILVER NITRATE SPECTROPHOTOMETRY[J].Journal of Beijing Technology and Business University:Natural Science Edition,1998(3). |
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| Authors: | Du Haiyan |
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| Abstract: | Determination of arsenic in 3861 bimetallic reforming catalyst by potassium borohydride-silver nitrate spectrophotometry is described, the influence of coexistence components on this method are discussed. The volume and sequence of adding thiourea complex, as masking reagent, are investigated for removing interference of 2mg Pt. The interference of 3.5mg Sn is removed by adopting HCl media at 3mol/L acidity. |
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| Keywords: | arsine bimetallic reforming catalyst spectrophotometry |
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