采用氯酸钾作助熔剂，经过高频燃烧后，用红外碳硫仪测定纯银及银基合金中的微量碳、硫，测定范围碳：0.005%~0.12%，硫：0.005%~0.099%。方法准确度高，相对标准偏差、加标回收率分别为碳：3.3%~10.9%、91%~120%；硫：2.8%~10%、91%~120%。
The content of carbon and sulfur in pure silver and silver alloy was analyzed by using infrared absorption, and the related analytical conditions were established. Under the given analytical conditions, the method has advantages of being accurate and time-saving. Satisfactory analytical results can be obtained for the samples containing carbon in the range of 0.005%~0.12% and sulfur in the range of 0.005%~0.099%. The relative standard deviation, standard addition recovery rate is 3.3%~10.9%, 91%~ 120% for carbon, and 2.8%~10%, 91%~120% for sulfur, respectively.
参考文献
| [1] | GB/T 4135-2002.GB/T 4135-2002银[S].北京:中国标准出版社,2001. |
| [2] | 原怀保,李月红.高频燃烧-红外吸收法测定纯银中痕量碳硫[J].冶金分析,2008(05):75-77. |
| [3] | 沈善问,邱红莲,刘继升.高频红外吸收法测定贵金属催化剂中的碳、硫[J].贵金属,2001(03):44-46. |
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