Disclosed herein is a dry analytical element and a method of using same for quantitatively detecting alkaline phosphatase in an aqueous liquid. The element comprises, in fluid contact, first and second reagent zones wherein the first reagent zone contains a substrate for alkaline phosphatase, e.g. p-nitrophenyl phosphate, and the second reagent zone contains a buffer which is an alkali metal or ammonium salt and has a pKa in the range of 9-11.5, e.g. an alkali metal salt of carbonic acid.
本文公开了一种干式分析元件及其使用方法,用于定量检测
水性液体中的碱性
磷酸酶。该元件包括流体接触的第一试剂区和第二试剂区,其中第一试剂区含有碱性
磷酸酶的底物,例如对
硝基苯磷酸,第二试剂区含有缓冲液,缓冲液是碱
金属盐或
铵盐,pKa 在 9-11.5 之间,例如
碳酸的碱
金属盐。