| Ag-DDC光度法测砷的研究 |
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| 引用本文： | 高峰,贾永忠,孙进贺,景燕,姚颖,马军,夏承龙.Ag-DDC光度法测砷的研究[J].盐湖研究,2010,18(2). |
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| 作者姓名： | 高峰 贾永忠 孙进贺 景燕 姚颖 马军 夏承龙 |
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| 作者单位： | 1. 中国科学院青海盐湖研究所,青海,西宁,810008;中国科学院研究生院,北京,100039
2. 中国科学院青海盐湖研究所,青海,西宁,810008 |
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| 摘 要： | 研究了Ag-DDC分光光度法测复杂体系砷过程中,试液中氮氧化物、醋酸铅脱脂棉湿润度、吸收液温度等因素对砷测定的影响。结果表明采用Ag-DDC分光光度测砷,在试液中加硝酸消解时,氮氧化物极难赶尽,对砷的测定有负干扰;半干燥的醋酸铅脱脂棉对硫化氢的吸收更加充分;吸收液温度对测量有一定的影响,吸收液的吸光度会随温度的升高而降低。
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| 关 键 词： | Ag-DDC光度法 测砷 影响因素 |
Study on Determination of Arsenic by Ag-DDC Spectrophotometric Method |
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| GAO Feng,JIA Yong-Zhong,SUN Jin-He,JING Yan,YAO Ying,MA Jun,XIA Cheng-Long.Study on Determination of Arsenic by Ag-DDC Spectrophotometric Method[J].Journal of Salt Lake Research,2010,18(2). |
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| Authors: | GAO Feng JIA Yong-Zhong SUN Jin-He JING Yan YAO Ying MA Jun XIA Cheng-Long |
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| Institution: | 1; 2(1.Qinghai Institute of Salt Lakes; Chinese Academy of Sciences; Xining; 810008; China; 2.Graduate University of Chinese Academy of Sciences; Beijing; 100039; China); |
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| Abstract: | Some affecting factors including nitrogen oxides,absorbent cotton humidity of lead acetate,and temperature of absorption,on arsenic determination in complex system by Ag-DDC spectrophotometric method were studied in this paper.The results showed that the nitrogen oxides was difficult to be dispeled when using nitric acid to digest sulfide,which had negative interference on the arsenic determination.The hydrogen sulfide was absorbed much sufficiently by semi-dry absorbent cotton of lead acetate.The temperatu... |
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| Keywords: | Ag-DDC spectrophotometric method Arsenic determination Affecting factors |
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