| 低压离子色谱法测定土壤中的硒(Ⅳ)和硒(Ⅵ) |
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| 引用本文： | 周光明,彭敬东,张新申. 低压离子色谱法测定土壤中的硒(Ⅳ)和硒(Ⅵ)[J]. 西南师范大学学报(自然科学版), 2002, 27(4): 524-527 |
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| 作者姓名： | 周光明 彭敬东 张新申 |
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| 作者单位： | 1. 西南师范大学化学化工学院,重庆,400715
2. 四川大学皮革系,四川,成都,610064 |
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| 基金项目： | 重庆市自然科学基金资助 (98-5 2 86) . |
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| 摘 要： | 研究了一种快速、灵敏且选择性好的用低压离子色谱测定土壤中的硒(Ⅳ)和硒(Ⅵ)的新方法.选取洗脱液为1.4×10-3mol/L Na2CO3,其流速为1～1.2 mL/min,选取分离柱尺寸为100 mm×6 mm I.D.,抑制柱尺寸为60 mm×6 mm I.D.,并用电导检测器进行定量,对硒(Ⅳ)和硒(Ⅵ)的检测限分别为0.61μg/mL和0.56 μg/mL,20 μL 进样的相对标准偏差为分别为2.40%和1.94%.
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| 关 键 词： | 低压离子色谱法 硒 土壤 含量测定 洗脱液 流速 分离柱 |
Determination of Selenium(Ⅵ) and Selenium(Ⅳ) in Soil By Low Pressure Ion Chromatography |
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| Abstract. Determination of Selenium(Ⅵ) and Selenium(Ⅳ) in Soil By Low Pressure Ion Chromatography[J]. Journal of southwest china normal university(natural science edition), 2002, 27(4): 524-527 |
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| Authors: | Abstract |
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| Abstract: | A rapid, selective and sensitive method for the determination of selenium (Ⅳ) and selenium (Ⅵ) by low pressure ion chromatography (LPIC) was developed. The eluent is (1.4×10-3) mol/L Na2CO3, the flow rate of the eluent is 1-1.2 mL/min. A short separation column (100 mm×6 mm I.D.) and a short suppression column (60 mm×6 mm I.D.) were employed for the separation and with conductivity detector for quantification. The detection limits for Se(Ⅳ) and Se(Ⅵ)were 0.61 μg/mL and 0.56 μg/mL. The relative standard deviation using 20 μL injection was 2.40% and 1.94% for Se(Ⅳ)and Se(Ⅵ). The method was used to analyze seleniferous soil samples. |
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| Keywords: | Selenium determination low pressure ion chromatography soil |
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