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ISO 11047:1998

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Soil quality - Determination of cadmium, chromium, cobalt, copper, lead, manganese, nickel and zinc - Flame and electrothermal atomic absorption spectrometric methods

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This International Standard specifies two methods for the determination, by atomic absorption spectrometry, of one or more of cadmium, chromium, cobalt, copper, lead, manganese, nickel and zinc, in aqua regia extracts of soil obtained in accordance with ISO 11466. The choice of method for any element depends on the amount of that element expected to be in a sample, and both methods might be needed to cover all the elements in one sample. The methods are applicable when the extractable element content is above or below the amount given in table 1 (as milligrams per kilogram, dry matter), as appropriate. The two methods are described separately as follows:

Method A - Determination of cadmium, chromium, cobalt, copper, lead, manganese, nickel and zinc by flame atomic absorption spectrometry.

Method B - Determination of cadmium, chromium, cobalt, copper, lead, manganese, nickel and zinc by electrothermal atomic absorption spectrometry.

Many of the procedures and reagents are common to both methods, and to the different elements within each method. Users are advised, however, to read the whole standard carefully before embarking on any of the procedures.

Table 1 - Indicative limits of soil contents (mg/kg dry matter) for elements extractable in aqua regia in accordance with ISO 11446
ElementMethod A (flame AAS)Method B (electrothermal AAS)
Cadmium> 2< 2
Chromium> 12< 12
Cobalt> 12< 12
Copper> 5< 5
Lead> 15< 15
Manganese> 2< 2
Nickel> 12< 12
Zinc> 2< 2

SDO ISO: International Organization for Standardization
Document Number ISO 11047
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 190/SC 3/WG 1
Publish Date Document Id Type View
Not Available ISO 11047:1998 Revision