质控图原理在纳氏试剂分光光度法测定氨氮的应用

Quality Control Chart Principle Applied in the Determination of Ammonia Nessler Reagent Spectrophotometric

地表水氨氮的变化是反映水体状况的一个重要特征。天然水体中有机物种类繁多,但从总体上看不外乎是由氢、碳、氮、磷、氧等元素组成的化合物。其中以氮素化合物最不稳定,当它进入水体时,由于外部环境和微生物的分解作用,其不断地发生着生物化学变化,并逐渐演变成较简单的无机化合物。因此,常用氨氮和各种形态的氮化合物产生及变化来作为水体污染的依据指标。

The variation of surface water,ammonia is a refl ection of the status of water is an important feature.Changes in surface water of ammonia nitrogen in natural waters a wide range of organic matter,but in general a compound consisting of hydrogen,carbon,nitrogen,phosphorus,oxygen and other elements of no more than yes.Among the most unstable nitrogen compounds,when it enters the water,due to the decomposition of the external environment and microorganisms,which constantly undergoing biochemical changes,and gradually evolved into simpler inorganic compounds.Thus,a change and various forms of common ammonia and nitrogen compounds as a basis for water pollution indicators.