A method for assaying ammonia and/or ammonium ions contained in a liquid sample which comprises subjecting the sample to a reaction at least in the presence of an NAD synthetase, deamidated NAD, ATP, Mg2+ ions and/or Mn2+ ions, a dehydrogenase capable of forming ammonia molecules from an amine substrate and an oxidized NAD, and the amine substrate, and then determining the amounts of the ingredients consumed or generated by the reaction ; and an assaying composition comprising all of the above-specified ingredients. The method is inexpensive and is effective in accurately assaying ammonia and/or ammonium ions present in a few minutes.
一种测定液体样品中所含
氨和(或)
铵离子的方法,该方法包括至少在有
NAD 合成酶、脱酰胺
NAD、
ATP、Mg2+ 离子和(或)Mn2+ 离子、能从胺底物和氧化
NAD 形成
氨分子的脱氢酶以及胺底物存在的情况下,将样品置于反应中,然后测定反应消耗或生成的成分的量;以及包含上述所有成分的测定组合物。该方法成本低廉,可在几分钟内有效准确地测定
氨和/或
铵离子的含量。