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KMID : 0370219850290030144
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Yakhak Hoeji
1985 Volume.29 No. 3 p.144 ~ p.151
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Determination of Traces of Selenium in Plant Materials by Cathodic Stripping Voltammetry
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문동철/Moon DC
홍성화/박만기/김중기/이광우/Hong SH/Park MK/Kim JK/Lee KW
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Abstract
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Cathodic stripping voltammetric determination of traces of selenium in plant samples was studied. Stripping peak of selenium(IV) from Cu-Se intermettalic deposit in acidic media containing copper(II) ion is specific, highly sensitive and well defined, is successfully used for the quantitative determination of selenium down to the level of 1ng/ml. Sample is burnt in a calorimeter bomb under the oxygen pressure of 40 atm and the selenium is absorbed in O.1M NaOH. After the solution is filtrated, concentrated and acidified with HCl, then passed through a column of cation exchange resin in the H+form(Dowex 5OX-8). The column eluate is analyzed for selenium by differential pulse cathodic stripping voltammetric method. Analytical results of selenium for NBS SMR is well agreement with the certified values. Results are given for a series of plant materials.
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