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GB/T 7478-1987 Water quality--Determination of ammonium--Distillation and titration method

Standard Number:  GB/T 7478-1987
Title:  Water quality--Determination of ammonium--Distillation and titration method
Language:  Simplified Chinese
Replaced by Standard:  HJ 537-2009

Publication Date:  1987/3/6
Execute Date:  1987/8/1
Revocatory Date:  2010/4/1
Standard Type:  Method
International Classification for Standards (ICS)ENVIRONMENT. HEALTH PROTECTION. SAFETY>>Water quality
Publisher:  Chinese Standards(GB)
Price:---  
Number of Pages:5P.;A4  

Description:This standard applies to the determination of ammonium in drinking water and wastewater. The 10 ml, can of ammonium nitrogen content in the trial of up to 10 mg, the equivalent of the sample concentration is as high as 1000 mg/l. Lowest detection concentration: try to use 250 ml, actual measurement (degree of freedom for the 4) the lowest detection for nitrogen concentration of 0.2 mg/l. Sensitivity: use 100 ml of 1.0 ml 0.02 mol/l HCL is equivalent to 2.8 mg/nitrogen L. Urea is probably the main interference, interference: it under prescribed conditions with ammonia distillate, causing the result on the high side, volatile amine also cause interference, they will be with distillate and titration acid reaction, so that the result is on the high side. Chloride samples of chloramine also were determined in this way.  
Cross References:HJ 537-2009  
File Format:  PDF(Acrobat Reader) or Word version doc Document
File Size:  372KB
Tile in English:  Water quality--Determination of ammonium--Distillation and titration method

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