A multilayer analytical element for analysis of analyte in a liquid sample comprising a liquid sample-spreading layer, a reagent layer containing a diazonium salt, and a liquid-impermeable light-transmissive support, being laminated in this order, in which said reagent layer contains a sulfonic acid group-containing polymer having at least 10 molar % of a repeating unit selected from those consisting of a sulfoalkyl group and sulfophenyl group. The analytical element can be an element comprising a porous reagent layer containing a diazonium salt and the liquid-impermeable light-transmissive support, being laminated in this order.
一种用于分析液体样品中分析物的多层分析元件,包括一个液体样品铺展层、一个含有重氮盐的试剂层和一个液体不透光的透射支持物,按此顺序层叠,其中所述试剂层含有一种含
磺酸基团的聚合物,该聚合物具有至少 10 摩尔%的重复单元,这些重复单元选自磺烷基和磺苯基。分析元件可以是由含有重氮盐的多孔试剂层和液体不透性透光支架组成的元件,并按此顺序层叠。