离子色谱-电感耦合等离子体质谱联用法测定西湖水中的痕量Sb(Ⅴ)和Sb(Ⅲ)

Determination of Trace Sb(Ⅴ) and Sb(Ⅲ) in Xihu Lake Water by Ion Chromatography with Inductively Coupled Plasma Mass Spectrometry

建立了离子色谱-电感耦合等离子体质谱联用技术(IC-ICP-MS)测定西湖水中的痕量Sb(Ⅴ)和Sb(Ⅲ)的方法。采用Dionex IonPacAS14(4.6 mm×250 mm id)色谱柱,流速1 mL/min,3 mg/L EDTA和0.2mg/L邻苯二甲酸氢钾(KHP)(pH4.7)混合溶液为淋洗液。50μL的进样量时,Sb(Ⅴ)的检出限为0.36μg/L,Sb(Ⅲ)的检出限为1.62μg/L。

A method for the determination of trace Sb（Ⅲ） and Sb（Ⅴ） in Xihu lake water by ion chromatography- inductively coupled plasma mass spectrometry was developed. Sb （Ⅲ） and Sb （Ⅴ） were separated on a Dionex IonPacAS14（4.6 mm ×250 mmid） column with an eluent solution of 3 mg/L EDTA and 0. 2 mg/L potassium hydrogen phthalate（KHP） （pH 4. 7） at a flow rate of 1 mL/min. The detection limits for Sb（Ⅴ） and Sb（Ⅲ） were 0. 36 μg/L, and 1.62 μg/L, respectively.