| 5—Br—PADAP光度法测定黄铁矿中微量银 |
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| 引用本文： | 廖克敏,葛玮. 5—Br—PADAP光度法测定黄铁矿中微量银[J]. 岩石矿物学杂志, 1985, 4(1): 84-86 |
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| 作者姓名： | 廖克敏 葛玮 |
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| 作者单位： | 中南地勘局230研究所(廖克敏)，中南地勘局230研究所(葛玮) |
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| 摘 要： | 2-(5溴-2-吡啶偶氮)-5-二乙基胺基苯酚(简称5-Br-PADAP)为铀(Ⅵ)、铌(Ⅴ)、钴(Ⅱ)等多种金属离子的灵敏显色剂,但试剂能否作为银(Ⅰ)的显色剂,则迄今尚未见有报导。本工作试验了以阴离子表面活性剂十二烷基硫酸钠(SLS)
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Photometric Determination of Micro Amount of Silver in Pyrite |
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| Abstract: | Photometric determination of micro amount of silver with 5-Br-PADAP-SLS as chromogenic agent in Pyrite was studied.The complex has maximumabsorption at 550 nm with a molar absorption coefficient of 6.5 x 104. Thecalibration curve is linear in the range of 0-1.6 ppm at pH 5.5-8. The int-erference of fifty foreign ions were tested. The range of detection is O.x-x×10-3 % for silver. |
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