Simultaneous determination of chloride, nitrate and sulphate in vegetable samples by single-column ion chromatography |
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Authors: | Meisu Zhou Donglong Guo |
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Institution: | a Test and Analysis Center, Shanxi University, Taiyuan,030006, PR China;b Department of Life Science, Shanxi University, Taiyuan, 030006, PR China |
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Abstract: | A new ion chromatography method is described for the simultaneous determination of Cl−, NO3− and SO42−, using a selected eluent 1.3-mM sodium gluconate/1.3-mM borax (pH 8.5). The extraction methods of Cl−, NO3−, SO42− in vegetables are studied. The determination limits of Cl−, NO3−, SO42− are 0.17 μg/ml, 0.63 μg/ml and 0.81 μg/ml. The linear ranges are 0 60 μg/ml, 0 90 μg/ml and 0 90 μg/ml. The relative S.D. are <2.5%. The mean recoveries of Cl−, NO3−, SO42− in vegetables range from 97.0 to 104%. |
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Keywords: | Vegetable Chloride Nitrate Sulphate Single-column ion chromatography |
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