Soil quality — Dissolution for the determination of total element content — Part 3: Dissolution with hydrofluoric, hydrochloric and nitric acids using pressurised microwave technique

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

French, English

Published date

02-16-2017

Publisher

International Organization for Standardization

ISO 14869-3:2017 specifies a method for microwave-assisted dissolution of soil samples for determination of total element contents of

Al, As, Ba, Ca, Cd, Co, Cr, Cs, Cu, Fe, Hg, K, Li, Mg, Mn, Na, Ni, P, Pb, S, Se, Sb, Sr, Tl, V, Zn

using an acid mixture of nitric acid (HNO3), hydrofluoric acid (HF) and hydrochloric acid (HCl). This method is applicable to all types of soil and soil material.

The main field of application is geological and pedological survey.

The acid mixture is suitable for total dissolution of element contents in soil (major, minor and trace), but some refractory compounds such as SiO2, TiO2, spinel, Al2O3 or other compounds may remain as a residue. In such a case, the use of alkaline fusion, following ISO 14869‑2, is recommended to determine the true total element content.

NOTE 1 In environmental studies, usually, aqua regia extraction is applied using ISO 12914 or ISO 11466.

Solutions produced by the microwave method are suitable for analysis, for example, by using atomic absorption spectrometry (FAAS, HGAAS, CVAAS, GFAAS), inductively coupled plasma optical emission spectrometry (ICP-OES) and inductively coupled plasma mass spectrometry (ICP-MS).

NOTE 2 Due to the presence of chloride in the digestion solution, limitations for the application of some analytical techniques can occur.

Committee	ISO/TC 190/SC 3
DevelopmentNote	Supersedes ISO/DIS 14869-3. (02/2017)
DocumentType	Standard
Pages	10
PublisherName	International Organization for Standardization
Status	Current

Standards	Relationship
BS ISO 14869-3:2017	Identical
NF ISO 14869-3 : 2017	Identical

ISO 11074:2015	Soil quality — Vocabulary
ISO 11464:2006	Soil quality Pretreatment of samples for physico-chemical analysis
ISO 3696:1987	Water for analytical laboratory use — Specification and test methods
ISO 10694:1995	Soil quality Determination of organic and total carbon after dry combustion (elementary analysis)
EN 13656 : 2002	CHARACTERIZATION OF WASTE - MICROWAVE ASSISTED DIGESTION WITH HYDROFLUORIC (HF), NITRIC (HNO[3]), AND HYDROCHLORIC (HCL) ACID MIXTURE FOR SUBSEQUENT DETERMINATION OF ELEMENTS
ISO 18512:2007	Soil quality Guidance on long and short term storage of soil samples