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New extraction procedures for isolation of famotidine from aqueous samples

机译:从水性样品中分离法莫替丁的新提取程序

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Liquid-liquid and solid-phase extraction procedures are proposed for famotidine isolation from aqueous samples. The isolation and spectrophotometric determination of famotidine is based on its complexation reaction with thymol blue. The composition of a complex between drug and reagent (1:1) was established. Dichloromethane and methanol were used as extraction solvents for LLE and SPE processes. Quantification of famotidine was done spectrophotometrically at 544 nm for dichloromethane or at 434 nm for methanolic extracts. The Beer law is obeyed in the famotidine concentration range 3.10~(-5) mol L~(-1)-2.0. 10~(-4) mol L~(-1) for LLE procedure and 2.0 • 10~(-6) mol L~(-1)-8.0 • 10~(-5) mol L~(-1) for SPE.
机译:提出了液-液和固相萃取程序,用于从水样中分离法莫替丁。法莫替丁的分离和分光光度法测定是基于它与百里酚蓝的络合反应。建立了药物和试剂之间的复合物(1:1)的组成。二氯甲烷和甲醇用作LLE和SPE工艺的萃取溶剂。法莫替丁的定量分析是在544 nm处用二氯甲烷进行分光光度法,在434 nm处用甲醇提取物进行的。法莫替丁浓度在3.10〜(-5)mol L〜(-1)-2.0范围内遵守比尔定律。 LLE程序为10〜(-4)mol L〜(-1),SPE为2.0•10〜(-6)mol L〜(-1)-8.0•10〜(-5)mol L〜(-1) 。

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