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Flow injection–chemiluminescence determination of cetirizine dihydrochloride in pharmaceuticals using tris(2,2′‐bipyridyl)ruthenium (II)–Ag(III) complex reaction
Luminescence ( IF 3.2 ) Pub Date : 2020-11-11 , DOI: 10.1002/bio.3985
Muhammad Moazzam 1 , Muhammad Asghar 1 , Mohammed Yaqoob 1 , Samar Ali 1 , Abdul Nabi 1
Affiliation  

A simple and sensitive flow injection–chemiluminescence (FI–CL) method was developed for determination of cetirizine dihydrochloride (CTZH) in pharmaceuticals. The method is primarily based on the enhancement effect of CTZH on the tris(2,2′‐bipyridyl)ruthenium (II)–diperiodatoargentate (III) ([Ru(bpy)3]2+–Ag(III) complex) CL system in an acidic medium. The optimum investigated variables of the CL reaction were: [Ru(bpy)3]2+, 50 × 10−6 mol/L; sulfuric acid, 1.0 × 10−3 mol/L; Ag(III) complex, 100 × 10−6 mol/L; potassium hydroxide, 1.0 × 10−3 mol/L; flow rate, 3.0 ml/min and sample loop volume, 300 μl. The detection and quantification limits were 2.0 × 10−4 and 5.0 × 10−4 mg/L (S/N of 3 and 10) respectively with a linear calibration range of 5.0 × 10−4 to 7.5 mg/L (R2 = 0.9999, n = 11), injection throughput of 110/h and the relative standard deviations of 1.5–3.5% over the range studied. The methodology was successfully applied to determine CTZH in different pharmaceutical samples and validated with a high‐performance liquid chromatography method, and resulted in the recovery of 94.6–108.6%. The probable CL reaction mechanism is described in brief.

中文翻译:

三(2,2'-联吡啶基)钌(II)-Ag(III)络合反应流动注射化学发光法测定药物中盐酸西替利嗪

建立了一种简单而灵敏的流动注射化学发光(FI-CL)方法,用于测定药品中的西替利嗪二盐酸盐(CTZH)。该方法主要基于CTZH对三(2,2'-联吡啶基)钌(II)-二高碘酸盐(III)([Ru(bpy)3 ] 2+ -Ag(III)络合物)CL体系的增强作用。在酸性介质中。CL反应的最佳研究变量为:[Ru(bpy)3 ] 2 +,50×10 -6 mol / L; 硫酸1.0×10 -3 mol / L; Ag(III)络合物,100×10 -6 mol / L; 氢氧化钾,1.0×10 -3摩尔/升 流速3.0 ml / min,样品定量环体积300μl。检出限和定量限分别为2.0×10 -4和5.0×10 -4 mg / L(S / N为3和10),线性校准范围为5.0×10 -4至7.5 mg / L(R 2 = 0.9999,n = 11),进样量为110 / h,相对标准偏差在研究范围内为1.5-3.5%。该方法已成功应用于不同药物样品中CTZH的测定,并通过高效液相色谱法进行了验证,结果回收率为94.6–108.6%。简要描述了可能的CL反应机理。
更新日期:2020-11-11
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