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HJ 536-2009   Water quality-Determination of ammonia nitrogen-Salicylic acid spectrophotometry (English Version)
Standard No.: HJ 536-2009 Status:valid remind me the status change

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Language:English File Format:PDF
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Standard No.: HJ 536-2009
English Name: Water quality-Determination of ammonia nitrogen-Salicylic acid spectrophotometry
Chinese Name: 水质 氨氮的测定 水杨酸分光光度法
Professional Classification: HJ    Professional Standard - Environment
Issued by: 环境保护部
Issued on: 2009-12-31
Implemented on: 2010-4-1
Status: valid
Superseding:GB 7481-1987 Water quality; Determination of ammonium; Spectrophotometric method with salicylic acid
GB 7481-1987 Water quality; Determination of ammonium; Spectrophotometric method with salicylic acid
Language: English
File Format: PDF
Word Count: 4000 words
Price(USD): 100.0
Delivery: via email in 1 business day
This standard specifies the salicylic acid spectrophotometry used for determination of ammonia nitrogen in water. This standard is applicable to the determination of ammonia nitrogen in groundwater, surface water, domestic sewage and industrial wastewater. When the sampling volume is 8.0mL and a 10mm cuvette is used, the detection limit is 0.01mg/L, the lower limit of determination is 0.04mg/L and the upper limit of determination is 1.0mg/L (all expressed as N). When the sampling volume is 8.0mL and a 30mm cuvette is used, the detection limit is 0.004mg/L, the lower limit of determination is 0.016mg/L and the upper limit of determination is 0.25mg/L (all expressed as N). 2 Method principle In the presence of alkaline medium (pH =11.7) and sodium nitroprusside, ammonia and ammonium ions in water react with salicylate and hypochlorous acid ions to generate blue compounds, and the absorbance is measured with a spectrophotometer at 697nm. 3 Interference and its elimination See Annex B for the possible interfering substances and their limits when this method is used for analysis of water samples. Serious interference from aniline and ethanolamine is rare. The interference is usually caused by primary amine. It may also be caused by chloramine, excessive-high acidity and alkalinity as well as the inclusion of substance capable of reducing hypochlorous acid ions. If the color of the water sample is too dark, the contained salt content is too high, the potassium tartrate does not have enough masking ability for metal ions in the water sample, or there are high concentrations of calcium, magnesium and chloride in the water sample, pre-distillation is required.
1 Application scope 2 Method principle 3 Interference and its elimination 4 Reagents and materials 5 Apparatus 6 Sample 7 Analytical procedures 8 Expression of results 9 Accuracy and precision 10 Quality guarantee and control
HJ 536-2009 is referred in:
* GB 27632-2011 Emission standard of pollutants for rubber products industry
* GB 25467-2010 Emission Standard of Pollutants for Copper, Nickel, Cobalt Industry
* GB 25467-2010/XG1-2013 Emission standard of pollutants for copper,nickel,cobalt industry
* GB 30770-2014 Emission standards of pollutants for stannum,antimony and mercury Industries
* GB 28666-2012 Emission standard of pollutants for ferroalloy smelt industry
* GB 4287-2012 Discharge standards of water pollutants for dyeing and finishing of textile industry
* GB 25467-2010/XG1-2013 Emission standard of pollutants for copper,nickel,cobalt industry
* GB 25467-2010/XG1-2013 Emission standard of pollutants for copper,nickel,cobalt industry
* GB 4287-2012 Discharge standards of water pollutants for dyeing and finishing of textile industry
* GB 27632-2011 Emission standard of pollutants for rubber products industry
* GB 25467-2010 Emission Standard of Pollutants for Copper, Nickel, Cobalt Industry
* GB 25467-2010 Emission Standard of Pollutants for Copper, Nickel, Cobalt Industry
* GB 16171-2012 Emission standard of pollutants for coking chemical industry
* GB 31572-2015 Emission standard of pollutants for synthetic resin industry
* GB 31571-2015 Emission standard of pollutants for petroleum chemistry industry
* GB/T 29044-2012 采暖空调系统水质
*GB 30486-2013 Discharge standard of water pollutants for leather and fur making industry
*GB 31570-2015 Emission standard of pollutants for petroleum refining industry
*GB 31573-2015 Emission standards of pollutants for inorganic chemical industry
*DB12/ 356-2018 Integrated Wastewater Discharge Standard
*GB 31574-2015 Emission standards of pollutants for secondary copper, aluminum, lead and Zink industry
*GB 31573-2015/XG1-2020 Emission standards of pollutants for inorganic chemical industry, inckudes Amendment 1
Code of China
Standard
HJ 536-2009  Water quality-Determination of ammonia nitrogen-Salicylic acid spectrophotometry (English Version)
Standard No.HJ 536-2009
Statusvalid
LanguageEnglish
File FormatPDF
Word Count4000 words
Price(USD)100.0
Implemented on2010-4-1
Deliveryvia email in 1 business day
Detail of HJ 536-2009
Standard No.
HJ 536-2009
English Name
Water quality-Determination of ammonia nitrogen-Salicylic acid spectrophotometry
Chinese Name
水质 氨氮的测定 水杨酸分光光度法
Chinese Classification
Professional Classification
HJ
ICS Classification
Issued by
环境保护部
Issued on
2009-12-31
Implemented on
2010-4-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
GB 7481-1987 Water quality; Determination of ammonium; Spectrophotometric method with salicylic acid
GB 7481-1987 Water quality; Determination of ammonium; Spectrophotometric method with salicylic acid
Language
English
File Format
PDF
Word Count
4000 words
Price(USD)
100.0
Keywords
HJ 536-2009, HJ/T 536-2009, HJT 536-2009, HJ536-2009, HJ 536, HJ536, HJ/T536-2009, HJ/T 536, HJ/T536, HJT536-2009, HJT 536, HJT536
Introduction of HJ 536-2009
This standard specifies the salicylic acid spectrophotometry used for determination of ammonia nitrogen in water. This standard is applicable to the determination of ammonia nitrogen in groundwater, surface water, domestic sewage and industrial wastewater. When the sampling volume is 8.0mL and a 10mm cuvette is used, the detection limit is 0.01mg/L, the lower limit of determination is 0.04mg/L and the upper limit of determination is 1.0mg/L (all expressed as N). When the sampling volume is 8.0mL and a 30mm cuvette is used, the detection limit is 0.004mg/L, the lower limit of determination is 0.016mg/L and the upper limit of determination is 0.25mg/L (all expressed as N). 2 Method principle In the presence of alkaline medium (pH =11.7) and sodium nitroprusside, ammonia and ammonium ions in water react with salicylate and hypochlorous acid ions to generate blue compounds, and the absorbance is measured with a spectrophotometer at 697nm. 3 Interference and its elimination See Annex B for the possible interfering substances and their limits when this method is used for analysis of water samples. Serious interference from aniline and ethanolamine is rare. The interference is usually caused by primary amine. It may also be caused by chloramine, excessive-high acidity and alkalinity as well as the inclusion of substance capable of reducing hypochlorous acid ions. If the color of the water sample is too dark, the contained salt content is too high, the potassium tartrate does not have enough masking ability for metal ions in the water sample, or there are high concentrations of calcium, magnesium and chloride in the water sample, pre-distillation is required.
Contents of HJ 536-2009
1 Application scope 2 Method principle 3 Interference and its elimination 4 Reagents and materials 5 Apparatus 6 Sample 7 Analytical procedures 8 Expression of results 9 Accuracy and precision 10 Quality guarantee and control
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Keywords:
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