Measurement of trace potassium hexachloroplatinate concentrations in carboplatin by HPLC-ICP-MS with valve switching
文献类型： 外文期刊
作者： Li Bing-Ru 1 ; Li Cheng 1 ; Liu Jing 1 ; He Zhao-ying 1 ; Zhao Fang 1 ; Ma Zhi-hong 1 ;
作者机构： 1.Minist Agr, Risk Assessment Lab Agroprod, Beijing Res Ctr Agr Stand & Testing, Shuguang Garden Middle Rd, Beijing 100097, Peoples R China
期刊名称：JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY （ 影响因子：4.023； 五年影响因子：3.827 ）
ISSN： 0267-9477
年卷期： 2021 年 36 卷 11 期
页码：
收录情况： SCI
摘要： High performance liquid chromatography (HPLC) coupled to an inductively coupled plasma mass spectrometry (ICP-MS) method with a valve switching modality was developed for the determination of trace potassium hexachloroplatinate concentrations in carboplatin. Standard samples of carboplatin and potassium hexachloroplatinate were used to determine the retention time in the detector after separation in a PRP-X100 chromatography column and elution following an isocratic elution procedure with a mobile phase of 50 mmol L-1 dihydrogen phosphate and pH 5.5. For determining the concentration of potassium hexachloroplatinate by HPLC-ICP-MS, high concentration carboplatin was eluted via a four-way valve switching modality which was installed in series with HPLC and ICP-MS. The results showed that the linear range of potassium hexachloroplatinate was 1.0-100 mu g L-1, the detection limit (3S/N) was 0.1 mu g L-1, the recovery rate was 90.0-98.8%, and the relative standard deviations (n = 6) were 2.7-3.4%. Overall, we found that the four-way valve switching system was practical for the determination of trace potassium hexachloroplatinate in carboplatin.
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