| 比浊法测定锌精矿中微量的铅 |
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| 引用本文： | 韦后明,施先义,易灵红. 比浊法测定锌精矿中微量的铅[J]. 化工技术与开发, 2013, 0(3): 30-31,34 |
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| 作者姓名： | 韦后明 施先义 易灵红 |
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| 作者单位： | 广西现代职业技术学院资源工程系 |
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| 摘 要： | 乙硫氮（N，N-二乙基硫代氨基甲酸钠）与Pb（Ⅱ）反应生成白色沉淀物，据此建立了比浊法测定微量铅的新方法。方法是在pH值为7．5的氨水-氯化铵缓冲溶液中，聚乙烯醇作稳定剂，乙硫氮与Pb（Ⅱ）作用得到白色浑浊物，以分光光度计于波长‰处测量吸光度。Pb（Ⅱ）含量在0-17.5μg·（50mL）^-1’范围内呈良好的线性关系。方法用于测定锌精矿中微量的铅，结果满意。
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| 关 键 词： | 比浊法 测定 铅 |
Determination of Trace Lead in Zinc Concentrate by Turbidimetric Method |
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| WEI Hou-ming,SHI Xian-yi,YI Ling-hong. Determination of Trace Lead in Zinc Concentrate by Turbidimetric Method[J]. Technology & Development of Chemical Industry, 2013, 0(3): 30-31,34 |
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| Authors: | WEI Hou-ming SHI Xian-yi YI Ling-hong |
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| Affiliation: | (Department of Resources Engineering,Guangxi Modern Polytechnic College,Hechi 547000,China) |
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| Abstract: | Abstract： In the buffer solution of ammonia-ammonium chloride which pH was 7.5, applied polyvinyl alcohol as stabilizer, B sulfur nitrogen reacted with Pb （ Ⅱ ） to form the white precipitate. Based on this, a new determination method of trace lead by turbidimetric method was set up. The absorbance was measured at the wavelength of 400 nm. The content of Pb（ Ⅱ ） showed a good linear rela- tionship in the range of 0-17.5μg/50mL.The results showed that the determination of trace lead by tuhldimetric method was satisthc- tory. |
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| Keywords: | turbidimetric method determination lead |
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