| Flow analysis for determination of inorganic arsenic and antimony in seawater with on-line liquid nitrogen trap and hydride generation |
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| 作者姓名： | Lu Xiankun Li Jing Chen Shuzhu Dai Guosheng |
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| 作者单位： | Department of Marine Chemistry, Ocean University of Qingdao, Qingdao, China;Department of Marine Chemistry, Ocean University of Qingdao, Qingdao, China;Department of Marine Chemistry, Ocean University of Qingdao, Qingdao, China;Department of Marine Chemistry, Ocean University of Qingdao, Qingdao, China |
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| 摘 要： | An automatic flow analysis system with on-line liquid nitrogen trap, hydride generation and flame-less atomic absorption spectrophotometry was presented for the determination of inorganic arsenic and antimony in seawater. The experimental conditions such as acidity of reduction reaction, the amount of sodium borohydride , the flow rate of carry gas (high purity of nitrogen) were tested and selected optimally. The limit detection of the method presented was 0. 15 ug/L for arsenic and 0. 24 μ/L for antimony . During the determination of seawater samples with levels microgram arsenic and antimony pa litre th?variation coefficient would be ±4% for arsenic and ±10% for antimony. The volume needed for one measurement was 9 mL for arsenic and 12 mL for antimony. The frequency of sample determination reached 20 times per hour for arsenic and 15 times per hour for antimony.
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| 收稿时间： | 1989/7/10 0:00:00 |
| 修稿时间： | 1989/11/15 0:00:00 |
Flow analysis for determination of inorganic arsenic and antimony in seawater with on-line liquid nitrogen trap and hydride generation |
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| Lu Xiankun,Li Jing,Chen Shuzhu,Dai Guosheng.Flow analysis for determination of inorganic arsenic and antimony in seawater with on-line liquid nitrogen trap and hydride generation[J].Acta Oceanologica Sinica,1990,9(2):255-261. |
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| Authors: | Lu Xiankun Li Jing Chen Shuzhu and Dai Guosheng |
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| Institution: | Department of Marine Chemistry, Ocean University of Qingdao, Qingdao, China |
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| Abstract: | An automatic flow analysis system with on-line liquid nitrogen trap,hydride generation and flame-less atomic absorption spectrophotometry was presented for the determination of inorganic arsenic and antimony in seawater.The experimental conditions such as acidity of reduction reaction,the amount of sodium borohydride,the flow rate of carry gas (high purity of nitrogen) were tested and selected optimally.The limit detection of the method presented was 0.15 ug/L for arsenic and 0.24 μ/L for antimony.During the determination of seawater samples with levels microgram arsenic and antimony pa litre the variation coefficient would be ±4% for arsenic and ±10% for antimony.The volume needed for one measurement was 9 mL for arsenic and 12 mL for antimony.The frequency of sample determination reached 20 times per hour for arsenic and 15 times per hour for antimony. |
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