CAJ | 학술논문

使用碱性过硫酸钾氧化紫外分光光度法（GB 11894—1989）测定水中的总氮时,在严格按该方法分析步骤操作的情况下,依然会出现空白值偏高、检测结果不准确等问题。本文对水中总氮检测过程中的影响因素进行了总结、分析,对需要重点注意的环节进行了探讨,找出了问题的原因并提出了解决方法。
사용감성과류산갑양화자외분광광도법（GB 11894—1989）측정수중적총담시,재엄격안해방법분석보취조작적정황하,의연회출현공백치편고、검측결과불준학등문제。본문대수중총담검측과정중적영향인소진행료총결、분석,대수요중점주의적배절진행료탐토,조출료문제적원인병제출료해결방법。
Determination of total nitrogen in water with the method of alkaline potassium persulfate digestion UV spectrophotometric（GB11894-1989） will encounter problems,such as high blank tests absorbance and inaccurate testing results even the analyzing operations were followed strictly.This paper summarizes and analyzes the influencing factors of the testing.The important links of determination were discussed to find the causes and countermeasures for these problems.