In a test piece for detecting a nitrite by virtue of the diazo coupling reaction, which test piece has supported on a substrate an effective amount of at least one oxidizing agent selected from the group consisting of MIXO, MIXO3, MIXO4, MI3H2XO6, wherin MI denotes an atom capable of being converted into a monovalent cation and X denotes a halogen atom, ethylenediamine tetraacetic acid-metals, cuprous chloride, copper sulfate, copper acetate, mercury acetate and bismuth acetate in corporation with a diazotizing agent and a coupling agent.
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机译:在用于通过重氮偶合反应检测亚硝酸盐的试件中,该试件将有效量的至少一种选自M I XO,M I XO 3的氧化剂负载在基板上。 ,M I XO 4,M I 3H 2 XO 6,其中,M I表示能够被转化为一价阳离子的原子,X表示卤素原子,乙二胺四乙酸-金属,氯化亚铜,硫酸铜,乙酸铜,乙酸汞和乙酸铋与重氮化剂和偶联剂一起使用。
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