气相分子吸收光谱法与过硫酸钾紫外分光光度法测定水中总氮的比较  

Comparison of determination of total nitrogen in water by gas phase molecular absorption spectroscopy and potassium persulfate ultraviolet spectrophotometry

作　　者：李华 Li Hua(Shaoguan Environmental Monitoring Center,Shaoguan Guangdong 512026,China)

机构地区：[1]韶关市环境监测中心站

出　　处：《环境与发展》2019年第11期85-86,共2页Environment & Development

摘　　要：采用碱性过硫酸钾消解紫外分光光度法(传统法)、气相分子吸收光谱法分别对水体中的总氮进行了测定,并对2种方法的原理、分析步骤、标准曲线以及准确度和精密度等方面进行了比较研究,通过比较,气相分子吸收光谱法消耗的试剂量小,测定范围宽,检出限低,测定快速,精密度高,自动化强,为监测人员在实际工作中提高监测效率提供参考。The total nitrogen in water was determined by alkaline potassium persulfate digestion Ultraviolet Spectrophotometry(traditional method)and Gas Phase Molecular Absorption spectrometry,the principles,analytic procedure,standard curve,accuracy and precision are compared and studied.By comparison,GPMAS has got a smaller dose,wider determination range,lower detection limit,rappidder determination,higher precision,stronger automation.It provides a reference for the experimenters to improve the monitoring efficiency in the usual work.

关 键 词：碱性过硫酸钾消解紫外分光光度法 气相分子光谱法 总氮 比较 

分 类 号：X83[环境科学与工程—环境工程]