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Norm
ÖNORM EN ISO 11905-1
Issue date: 1998 10 01
Water quality - Determination of nitrogen - Part 1: Method using oxidative digestion with peroxodisulfate (ISO 11905-1:1997)
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...
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Publisher:
Austrian Standards International
Format:
Digital | 15 Pages
Language:
German
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ICS
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.
ÖNORM EN ISO 11905-1
1998 10 01
Water quality - Determination of nitrogen - Part 1: Method using oxidative digestion with peroxodisu...
Norm
↖
Norm
ÖNORM EN ISO 3696
Issue date :
1995 08 01
Water for analytical laboratory use - Specifications and test methods (ISO 3696:1987)
Norm
ISO 3696:1987
Issue date :
1987 04 09
Water for analytical laboratory use — Specification and test methods
Norm
ISO 5725-2:1994
Issue date :
1994 12 22
Accuracy (trueness and precision) of measurement methods and results — Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
Norm
ISO 11905-1:1997
Issue date :
1997 05 15
Water quality — Determination of nitrogen — Part 1: Method using oxidative digestion with peroxodisulfate