Customer Support: 131 242

  • There are no items in your cart
We noticed you’re not on the correct regional site. Switch to our AMERICAS site for the best experience.
Dismiss alert

BS 7755-3.9:1995

Current
Current

The latest, up-to-date edition.

Soil quality. Chemical methods Extraction of trace elements soluble in aqua regia
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

15-10-1995

Committees responsible
National foreword
Method
1. Scope
2. Normative references
3. Principle
4. Reagents
5. Apparatus
6. Preparation of laboratory sample
7. Procedure
8. Test report
Annex
A. (informative) Bibliography
Figures
1. Reaction vessel, reflux condenser and absorption
     vessel (assembled)
2. Example of an absorption vessel

Specifies a method for the extraction, with aqua regia, of trace elements from soils and similar materials.

This International Standard specifies a method for the extraction, with aqua regia, of trace elements from soils and similar materials, prepared according to ISO 11464, and containing less than about 20 % (m/m) organic carbon according to ISO 10694. Materials containing more than about 20 % (m/m) organic carbon will require treatment with additional nitric acid (see note 8).

The resulting solution is suitable for the determination of trace elements using appropriate atomic spectrometric techniques. With high solute concentrations in extract solutions, spectral interferences and background enhancement should be expected.

NOTE 1 Aqua regia will not totally dissolve most soils and similar materials, and the efficiency of extraction for particular elements differs from element to element. Such efficiency might also differ for the same element in different matrices. Users of this International Standard should carry out a programme of analysis using reference materials to assure themselves that the method given here is appropriate for their needs. Elements extractable in aqua regia cannot, therefore, be decribed as “totals”; conversely they cannot be regarded as the “bio-available” fraction, as the extraction procedure is too vigorous to represent any biological process.

Committee
EH/4
DevelopmentNote
Supersedes 92/59281 DC Also numbered as ISO 11466. (04/2005) Reviewed and confirmed by BSI, July, 2005. (07/2005)
DocumentType
Standard
Pages
12
PublisherName
British Standards Institution
Status
Current
Supersedes

10/30205348 DC : 0 BS 10175 - INVESTIGATION OF POTENTIALLY CONTAMINATED SITES - CODE OF PRACTICE
BS 10175(2011) : 2011 INVESTIGATION OF POTENTIALLY CONTAMINATED SITES - CODE OF PRACTICE

BS 7755-3.5:1995 Soil quality. Chemical methods Pretreatment of samples for physico-chemical analyses
ISO 11047:1998 Soil quality Determination of cadmium, chromium, cobalt, copper, lead, manganese, nickel and zinc Flame and electrothermal atomic absorption spectrometric methods
BS 7755-3.8:1995 Soil quality. Chemical methods Determination of organic and total carbon after dry combustion (elementary analysis)
BS 7755-3.1:1994 Soil quality. Chemical methods Determination of dry matter and water content on a mass basis by a gravimetric method

View more information
$247.06
Including GST where applicable

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.

Need help?
Call us on 131 242, then click here to start a Screen Sharing session
so we can help right away! Learn more