| STUDIES ON CATALYTIC WAVE OF CHROMIUM IN SEAWATER |
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| 作者姓名： | 杨孙楷 林建东 李小波 |
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| 作者单位： | Department of Chemistry，Xiamen University，Xiamen，Department of Chemistry，Xiamen University，Xiamen，Department of Chemistry，Xiamen University，Xiamen |
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| 摘 要： | In this paper, the polarographic catalytic wave of trace chromium in seawater and its mechanism are studied. In supporting electrolyte containing ethylene diamine-NaNO2-EDTA, a clear, sensitive and stable catalytic wave is obtained, and its largest peak potential in differential oscilloscopic pola-rogram is -1.7 V (S.C.E). The detection limit for Cr is 1.5 × 10-9 M. It is unnecessary for natural seawater samples to be separated and preconcentrated, and the samples can be directly detected. Variable coefficient is 5%, and the relative error of recovery efficiency, 10%. The wave is a kind of hydrogen catalytic one with absorbability.
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| 收稿时间： | 1984/3/23 0:00:00 |
| 修稿时间： | 1984/7/10 0:00:00 |
STUDIES ON CATALYTIC WAVE OF CHROMIUM IN SEAWATER |
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| YANG SUNKAI,LIN JIANDONG and LI XIAOBO.STUDIES ON CATALYTIC WAVE OF CHROMIUM IN SEAWATER[J].Acta Oceanologica Sinica,1985,4(2):232-243. |
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| Authors: | YANG SUNKAI LIN JIANDONG and LI XIAOBO |
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| Institution: | Department of Chemistry, Xiamen University, Xiamen |
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| Abstract: | In this paper,the polarographic catalytic wave of trace chromium in seawater and its mechanism are studied.In supporting electrolyte containing ethylene diamine-NaNO2-EDTA,a clear,sensitive and stable catalytic wave is obtained,and its largest peak potential in differential oscilloscopic pola-rogram is -1.7V(S.C.E).The detection limit for Cr is 1.5×10-9 M.It is unnecessary for natural seawater samples to be separated and preconcentrated,and the samples can be directly detected.Variable coefficient is 5%,and the relative error of recovery efficiency,10%.The wave is a kind of hydrogen catalytic one with absorbability. |
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