电感耦合等离子体发射光谱法测定硫化物矿中的高含量铅
Determination of High Content of Lead in Sulfide Ores by Inductively Coupled Plasma-Atomic Emission Spectrometry
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摘要: 铅含量高的硫化物矿在氧化性酸的存在下极易形成硫酸铅沉淀而影响样品中铅的准确测定。文章通过王水-双氧水分解和高温灼烧后王水分解两种不同的样品处理方法,有效地去除样品中的硫,配合使用高盐雾化器采用电感耦合等离子体发射光谱法对硫化物矿石中的高含量铅进行测定。王水-双氧水分解可以测定硫化物矿中的铅、银和锑,高温灼烧后王水分解只能测定铅;两种样品处理方法均操作简便,具有准确度好、精密度高、分析速度快等优点。用这两种样品处理方法10次测定铅精矿(GBW 07167)中的铅,精密度(RSD)分别为0.38%和0.56%,相对误差分别为-0.41%和0.14%;测定方铅矿(GBW 07269)中铅精密度分别为0.76%和0.66%,相对误差分别为0.82%和0.45%。
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关键词:
- 硫化物矿 /
- 铅 /
- 电感耦合等离子体发射光谱法 /
- 王水-双氧水分解 /
- 高温灼烧
Abstract: The high content lead hosted in sulfide ore is easily formed PbSO4 precipitation with sulfur under the strong oxidizing acids, which effected the determination of Pb. This experiment established the two methods for determination of high content Pb in sulfide ore by inductively coupled plasma-atomic emission spectrometry (ICP-AES), being dissolved by aqua regia and H2O2 and by aqua regia after calcination at high temperature. The aqua regia-H2O2 decomposition method can be used to simultaneously determine Pb, Ag and Sb in samples, but calcination at high temperature-aqua regia decomposition method only can be used to determinate Pb. The two methods are both simple and fast with high accuracy and precision. The precision and accuracy of the two methods were demonstrated by analyzing reference materials GBW 07167 and GBW 07269. The RSD (n=10) of Pb for GBW 07167 were 0.38% and 0.56%, and relative error were -0.41% and 0.14%, respectively. The analytical results of Pb for reference material GBW 07269 were determinated by the same methods, whose RSD (n=10) were 0.76% and 0.66%, and relative error were 0.82% and 0.45%, respectively.-
Keywords:
- sulfide /
- ore /
- lead /
- inductively /
- coupled /
- plasma-atomic /
- emission /
- spectrometry /
- aqua
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铅污染地下水电动修复研究[J].水处理技术,2009,35(9):56-63. 重金属污染对食品安全的影响及其对策[J].中国调味品,2009,34(11):32-37. 我国铅锌矿区的重金属污染现状及治理[J].安徽农业科学,2009,37(30):14837-14838 ,14870.
我国汽车尾气污染的危害及其防治[J].内江师范学院学报,2009,24(8):70-75. 土壤和叶面铅污染在水稻体内的分布和积累的影响[J].土壤,2009,41(4):556-561. 岩石矿物分析编写组.岩石矿物分析(第一分册) [M].3版.北京:地质出版社,1991:422-433. 杨捷,庄丽亨,高振中.电感耦合等离子体-直读光谱法测定方铅矿中的微量元素[J].矿产与地质,1988,2(4):89-93. 袁玄晖,曾惠芳.等离子体直读光谱法分析单矿物初探[J].中国地质科学院院报,1986(第14号):125-132. 王松君,常平,王璞珺,候天平.电感耦合等离子体发射光谱法直接测定黄铜矿中多元素[J].岩矿测试,2004,23(3):228-230. Kuzuya M, Aranami H. Analysis of a high concentration copper in metal alloys by emission spectroscopy of a laser produced plasma is air at atmospheric pressure[J].Spectrochimica Acta Part B,2000,55(9):1423-1430. Kuzuya M, Aranami H. Analysis of a high concentration copper in metal alloys by emission spectroscopy of a laser produced plasma is air at atmospheric pressure[J].Spectrochimica Acta Part B,2000,55(9):1423-1430.
王静萍.ICP-AES法测定铜矿石中的主次成分的研究[J].山西师范大学学报:自然科学版,2001,15(1):50-51. 陈永欣,吕泽娥,刘顺琼,崔翔,谢毓群.电感耦合等离子体发射光谱法测定铜精矿中银砷铅锌[J].岩矿测试,2007,26(6):497-499. 周岭,张香荣.ICP-AES法测定铁矿石中的CaO、MgO、Al2O3、MnO [J].分析试验室,2002,21(3):52-54. 孙建刚,何松涛.微波消解-ICP-AES法测定铁矿中P和S[J].光谱实验室,2002,19(5):654-657. 陶俊,王素萍.ICP-AES测定铁矿石中多元素的研究[J].云南化工,2004,31(2):36-38. 胡述戈.微波消解-电感耦合等离子体原子发射光谱法测定铁矿石中8种成分[J].冶金分析,2006,26(6):40-43. 程键.电感耦合等离子体原子发射光谱法测定锌精矿及焙砂中10种杂质元素[J].冶金分析,2007,27(11):65-68. 许祥红,王桂群,刘洪清,孙雪松,陈京魏.电感耦合等离子体原子发射光谱法测定铁矿石中Si,Ca,Mg,Mn,Al,P,V,Ti[J].冶金分析,2006,26(2):89-90. 候列奇,李洁.电感耦合等离子体原子发射光谱法测定金属钼中10种微量元素[J].理化检验:化学分册,2009,45(2):148-150. 常平,王松君,孙春华,苏维娜,王丽娟.电感耦合等离子体原子发射光谱法测定黄铁矿中微量元素[J].岩矿测试,2002,21(4):304-306. 胡艳君,陈晶玮,曾贤明.电感耦合等离子体原子发射光谱法测定纯铜中杂质元素[J].冶金分析,2009,29(7):40-43. 陈永欣,吕泽娥,刘顺琼,刘国文.电感耦合等离子体原子发射光谱法测定锡精矿中杂质元素[J].冶金分析,2008,28(4):20-22. 孟红,金丽.电感耦合等离子体原子发射光谱法测定矿石中的金[J].黄金,2009,30(8):54-56. 赵庆令,李清彩,高玉花.电感耦合等离子体原子发射光谱法测定钼矿石中钴铬铜钼铅锡钨钇锌[J].岩矿测试,2009,28(5):488-490. 周红.电感耦合等离子体原子发射光谱法测定黄铜矿中铁、铅、锑、铋、砷、磷和硫[J].光谱实验室,2006,23(4):741-743. 曾惠芳,戢朝玉,袁玄晖.等离子体直读光谱法分析以Pb、Zn、Cu、Fe为基体的硫化矿物的研究[J].岩矿测试,1986,5(4):269-274. 马新荣,王蕾,温宏利,巩爱华.称重法配制标准溶液研究及其不确定度评估[J].岩矿测试,2010,29(6):729-734.
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