GB/T 34500.5-2017 Active National standards

GB/T 34500.5-2017 Chemical analysis methods for rare earth residue and waste water—Part 5:Determination of ammonia nitrogen content

Publish Date: 2017-12-29 Implement Date: 2018-09-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 34500.5-2017

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Analysis methods for rare metals and their alloys

ICS Name: Other non-ferrous metals and their alloys

Publish Date: 2017-12-29

Implement Date: 2018-09-01

Pages: 15 pages

Scope

This part of GB/T 34500 specifies the determination method for the ammonia nitrogen content (calculated as nitrogen) in leachate and wastewater from mining, mineral processing, and smelting.
This part is applicable to the determination of ammonia nitrogen content (calculated as nitrogen) in leachate and wastewater from mining, mineral processing, and smelting. It includes three analytical methods. Method 1 is the Nessler's reagent spectrophotometry, Method 2 is the salicylic acid spectrophotometry, and Method 3 is the distillation and neutralization titration method. The determination range of Method 1 is 0.5 mg/L~900.0 mg/L; the determination range of Method 2 is 1.00 mg/L~200.00 mg/L; and the determination range of Method 3 is 100 mg/L~60,000 mg/L.