SS-ISO-11262 › Soil quality - Determination of total cyanide (ISO 11262:2011, IDT)
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This International Standard is applicable to as-received (feld-moist) samples and specifies two different procedures for the liberation of cyanide from the soil:- direct liberation of hydrogen cyanide using orthophosphoric acid (normative);- extraction with sodium hydroxide solution and subsequent liberation using orthophosphoric acid (informative, see Annex B).The liberated cyanide is determined either by a photometric method or a titrimetric method using an indicator.The method is applicable to all types of soil.Under the conditions specified in this International Standard, the lower limit of application is 0,5 mg/kg of total cyanide (expressed on the as-received basis) for photometric determination and 10 mg/kg for titrimetric determination.NOTE Using the alkaline extraction followed by liberation using phosphoric acid, the lower limit of application is 1 mg/kg of total cyanide (expressed on the as-received basis) for photometric determination and 30 mg/kg for titrimetric determination.
To find similar documents by classification:
13.080.10 (Chemical characteristics of soils)
13.080.40 (Hydrological properties of soils)
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Designation Name
SS-ISO 11262:2013
Revision Level
2013 EDITION
Status
Current
Publication Date
Sept. 19, 2013
Language(s)
English
Page Count
32
International Equivalent
ISO 11262:2011(IDT)