【摘要】 过硫酸钾氧化 紫外分光光度法测总氮 ,温度对其测定影响实质是过硫酸钾。不同温度下过硫酸钾在水溶液中分解程度不同 ,而过硫酸根离子在总氮比色的同一波长处也有很强吸收更多还原

【Abstract】 The potassium persulfate oxidation UV spectrophotometer method determined total nitrogen. The temperature greatly influenced its determination results, but in reality it was influenced by potassium persulfate. The different temperatures make potassium persulfate decomposition degree in the aqueous solution different. And persulfate radical also has very strong absorption ability at the same wave length for the total nitrogen colorimeter.更多还原