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RS ISO 11905-1: 1997
Water quality — Determination of nitrogen — Part 1: Method using oxidative digestion with peroxodisulfate
Abstract

This part of IS0 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 I20 mg/l, expressed as oxygen (O,), when measured by Chemical Oxygen Demand
(COD) according to the respective International Standards.

General Information

CodeClassificationThemePagesPublisherAvailability
RS ISO 11905-1: 1997ADOPTED ISO STANDARDSEnvironment. Health protection. Safety21First Edition
Oct 2022		Available
Price: RWF 19,500


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