Standard Svensk standard · SS-ISO 11262:2013

Markundersökningar - Bestämning av total cyanid (ISO 11262:2011, IDT)

Status: Gällande

Omfattning
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.

Ämnesområden

Kemisk karaktäristik hos jord Hydrologiska egenskaper hos jord


Produktinformation

Språk: Engelska

Framtagen av: Karaktärisering av avfall, mark och slam, SIS/TK 535

Internationell titel: Soil quality - Determination of total cyanide (ISO 11262:2011, IDT)

Artikelnummer: STD-99506

Utgåva: 2

Fastställd: 2013-09-19

Antal sidor: 32

Ersätter: SS-ISO 11262:2004