This standard applies to the determination of ammonia nitrogen in the leaching liquid and wastewater of rare earth waste residues generated in mining, beneficiation and smelting processes. It includes three analytical methods: Noll's reagent Spectrophotometric method, spec-trophotometry method, salicylic acid Spectrophotometry method, spec-trophotometry method and distillation-neutralized Titrimetric method. The measurement range covers 0.5 mg/L to 60,000 mg/L. The standard provides scientific detection methods for wastewater treatment and waste residue management in the rare earth industry.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | H14 | ICS | 77.120.99 |
| Release Date | 2017-12-29 00:00:00 | Implementation Date | 2018-09-01 00:00:00 |
