Standard No.:	HJ 1448-2026
English Name:	Water quality— Determination of ammonia nitrogen — Nessler’s reagent-portable photometric method
Chinese Name:	水质 氨氮的测定 纳氏试剂-便携式光度法
Chinese Classification:	Z10    Environmental pollutant monitoring methods
Professional Classification:	HJ    Professional Standard - Environment
ICS Classification:	13.060.50 13.060.50    Examination of water for chemical substances 13.060.50
Source Content Issued by:	MEE
Issued on:	2026-01-20
Implemented on:	2026-5-1
Status:	to be valid
Target Language:	English
File Format:	PDF
Word Count:	6000 words
Translation Price(USD):	180.0
Delivery:	via email in 1~3 business day

本标准规定了测定水中氨氮的纳氏试剂-便携式光度法。
本方法适用于地表水、地下水、生活污水和工业废水中氨氮的污染溯源排查、水质趋势调查、污染物排放达标或超标的初步判定等的现场测定。
取样体积10.0 mL，检测光程16 mm时，方法检出限为0.08 mg/L，测定下限为0.32 mg/L。