醋酸铑的高效液相色谱分析

Study on Determination of Rhodium Acetate by High Performance Liquid Chromatography

二价醋酸铑为有机配合物,具有多种工业用途。建立了用高效液相色谱(HPLC)分析醋酸铑纯度的方法。最佳色谱条件为:使用C18色谱柱(φ4.6 mm×250 mm,5μm),流动相为甲醇:水(p H=3)=30:70(V/V),流速1 m L/min,柱温为25℃,检测波长为230 nm,进样量为10μL。方法的线性范围为0.10~2.00 mg/mL,相关系数r=0.9997;平均回收率为100.25%,RSD=0.91%(n=3)。

Rhodium acetate is an organic complex of Rh(II)and has multi-purpose potential in chemical industry.A method has been developed to measure the rhodium acetate by a high pressure liquid chromatograph(RP-HPLC).The operating conditions were as follows:A C18(φ4.6 mm×250 mm,5μm)chromatographic column,a mixture of acetonitrile and phosphoric acid,water(V/V=53:47,pH=3)as the mobile phase and 25°C of the column temperature.The detection wavelength was fixed at 230 nm and the injection volume was 10μL.Under these given operating conditions,the linear range of ruthenium acetylactonate was found to be 0.10~2.00 mg/mL(r=0.9997)and the average recovery reached up to100.25%with a 0.91%of RSD(n=3).