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ISO 11905-1:1997

Current Revision

Water quality - Determination of nitrogen - Part 1: Method using oxidative digestion with peroxodisulfate

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This part of ISO 11905 specifies a method for the determination of nitrogen present in water, in the form of free ammonia, ammonium, nitrite, nitrate and organic nitrogen compounds capable of conversion to nitrate under the oxidative conditions described.

Dissolved nitrogen gas is not determined by this method.

This method is applicable to the analysis of natural fresh water, sea water, drinking water, surface water and treated sewage effluent. It is also applicable to the analysis of sewage and trade wastes in which the amount of organic matter in the test portion can be kept below 40 mg/l, expressed as carbon (C), when measured by Total Organic Carbon (TOC), or 120 mg/l, expressed as oxygen (O2), when measured by Chemical Oxygen Demand (COD) according to the respective International Standards.


SDO ISO: International Organization for Standardization
Document Number ISO 11905
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 147/SC 2
Publish Date Document Id Type View
Not Available ISO 11905-1:1997 Revision