高效液相色谱固定化钌(Ⅱ)联吡啶-高锰酸钾化学发光法测定人血清中的雷尼替丁  被引量:2

Determination of ranitidine by liquid chromatography with immobilized tris(2,2′-bipyridyl) ruthenium(Ⅱ)-potassium permanganate chemiluminescence detection

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作  者:付爱华[1] 章竹君[1] 常平平[1] 闫瑞芳[1] 陈丽莉[1] 

机构地区:[1]陕西师范大学,陕西省生命分析化学重点实验室,西安710062

出  处:《分析试验室》2011年第1期1-4,共4页Chinese Journal of Analysis Laboratory

基  金:国家自然科学基金(30470086)项目资助

摘  要:将发光试剂钌(Ⅱ)联吡啶固定在离子交换树脂上,在酸性高锰酸钾氧化条件下,用于测定人血清中的雷尼替丁(RAN)。使用BDS C18柱为固定相,流动相为甲醇-磷酸盐缓冲溶液(pH 3.0)(35:65,V/V)。雷尼替丁的质量浓度在2.0×10-4~4.0×10-2mg/mL范围内呈良好的线性,回归方程为ΔICL=15.016ρ+187.09(r=0.9981)。检出限(3σ)为67 ng/mL。对2.0μg/mL的雷尼替丁进行11次平行测定,其相对标准偏差为2.2%。A novel method was developed for the determination of ranitidine by high performance liquid chromatography(HPLC) with chemiluminescence(CL) detection.The chromatographic separation was performed on a Hypersil BDS-C18 column(i.d.: 250 mm×4.6 mm,particle size: 5 μm,pore size: 100) with an isocratic mobile phase consisting of methanol and 0.02 mol/L KH2PO4(pH 3.0)(volume ratio 35:65) at a flow rate of 1.0 mL/min.The detection was based on the chemiluminescence reaction of ranitidine with acidic potassium permanganate(KMnO4) and tris(2,2(-bipyridyl)ruthenium(III),which was immobilized on the cationic ion-exchange resin.Under optimum conditions,the linear range for ranitidine was 2.0×10-4~4.0×10-2 mg/mL with the detection limit of 67 ng/mL(3σ).The relative standard deviation(RSD) was 2.2%(n=11) for 2.0 μg/mL ranitidine.Ranitidine in the serum samples was analyzed by the proposed method with satisfactory results.

关 键 词:高效液相色谱 化学发光 雷尼替丁 固定试剂 

分 类 号:O657.7[理学—分析化学] O657.3[理学—化学]

 

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