Two-phase aqueous extraction of chromium and its application to speciation analysis of chromium in plasma

被引：80

作者：

Wang, ZH ^{[1
]}

Song, M ^{[1
]}

Ma, QL ^{[1
]}

Ma, HM ^{[1
]}

Liang, SC ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China

来源：

MIKROCHIMICA ACTA | 2000年 / 134卷 / 1-2期

关键词：

two-phase aqueous extraction; speciation analysis; chromium; plasma;

D O I：

10.1007/s006040070060

中图分类号：

O65 [分析化学];

学科分类号：

070302 [分析化学]; 081704 [应用化学];

摘要：

This work proposes a new extraction method for chromium based on the two-phase aqueous system isopropyl alcohol-ammonium sulfate-ammonium thiocyanate (i-PrOH-(NH4)(2)SO4-NH4SCN), and the related experimental conditions are optimized. The results show that chromium (III) can be quantitatively extracted under the selected conditions: 4 mL of i-PrOH, 200 mu L of 2 mol/L sulfuric acid, 1 mL of 4 mol/L NH4SCN and 3 mL of saturated (NH4)(2)SO4 solution (V-total = 10 mL). Application of the proposed method to speciation analysis of plasma chromium was also investigated and satisfactory results were obtained.

引用

页码：95 / 99

页数：5

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