纳氏试剂分光光度法中两种不同前处理方式测定水质氨氮的对比研究  

Comparative Study on the Determination of Ammonia Nitrogen in Water Quality by Two Diff erent Pretreatment Methods Using Nesser’s Reagent Spectrophotometry

作　　者：李文梦 Li Wenmeng(Sichuan Yibin Ecological Environment Monitoring Center Station,Yibin 644000,China)

机构地区：[1]四川省宜宾生态环境监测中心站,四川宜宾644000

出　　处：《皮革制作与环保科技》2025年第4期158-160,共3页Leather Manufacture and Environmental Technology

摘　　要：水质氨氮的测定主要采用纳氏试剂分光光度法,前处理方式为絮凝沉淀与预蒸馏。本文从校准曲线绘制、检出限、准确度、精密度等多个方面对两种前处理形式进行探讨,试验表明两种前处理方式各有优缺点,在实际水样测定中尽量选择絮凝沉淀法,以减少试验误差。The determination of ammoniacal nitrogen in water quality is mainly by Nassler reagent spectrophotometry,and the pre-treatment methods areflocculation precipitation and pre-distillation.This paper discusses the two pre-treatment methods from the aspects of calibration curve drawing,detection limit,accuracy,precision and so on.The experiment shows that the two pre-treatment methods have advantages and disadvantages,and theflocculation precipitation method is chosen as far as possible in the actual water sample determination to reduce experimental errors.

关 键 词：纳氏试剂分光光度法 絮凝沉淀 预蒸馏 

分 类 号：TS5[轻工技术与工程—皮革化学与工程]