BS-ISO-20280-2007.pdf
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1、BRITISH STANDARD BS ISO 20280:2007 Soil quality Determination of arsenic, antimony and selenium in aqua regia soil extracts with electrothermal or hydride-generation atomic absorption spectrometry ICS 13.080.10 ? Copyright British Standards Institution Provided by IHS under license with BSI - Uncont
2、rolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:22:59 MDTNo reproduction or networking permitted without license from IHS -,-,- BS ISO 20280:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee BSI 2008 ISBN 978 0 580 531
3、80 4 National foreword This British Standard is the UK implementation of ISO 20280:2007. The UK participation in its preparation was entrusted to Technical Committee EH/4, Soil quality. A list of organizations represented on this committee can be obtained on request to its secretary. This publicatio
4、n does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication DateComments on 30 May 2008 Copyright British
5、Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:22:59 MDTNo reproduction or networking permitted without license from IHS -,-,- Reference number ISO 20280:2007(E) INTERNATIONAL STANDARD ISO 20280 First editi
6、on 2007-08-15 Soil quality Determination of arsenic, antimony and selenium in aqua regia soil extracts with electrothermal or hydride-generation atomic absorption spectrometry Qualit du sol Dosage de larsenic, de lantimoine et du slnium dans des extraits du sol leau rgale par spectromtrie dabsorptio
7、n atomique avec atomisation lectrothermique ou gnration dhydrures BS ISO 20280:2007 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:22:59 MDTNo reproduction or networking permitted without
8、license from IHS -,-,- ii Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:22:59 MDTNo reproduction or networking permitted without license from IHS -,-,- iii Contents Page Foreword iv 1 Sco
9、pe . 1 2 Normative references. 1 3 Principle. 1 4 Reagents 2 5 Apparatus 4 6 Procedure 5 6.1 Test portion. 5 6.2 Aqua regia extraction for arsenic, antimony and selenium . 5 6.3 Blank test solution 5 7 Method A Electrothermal atomic absorption spectrometry: Preparation of calibration solutions and m
10、easurement 5 7.1 General. 5 7.2 Calibration solutions for arsenic. 5 7.3 Calibration solutions for antimony. 5 7.4 Calibration solutions for selenium 6 7.5 Calibration and determination with ETAAS measurement. 6 8 Method B Hydride-generation atomic absorption spectrometry: Preparation of calibration
11、 solutions and measurement. 7 8.1 Pre-reduction and calibration for the determination of arsenic 7 8.2 Pre-reduction and calibration for the determination of antimony. 7 8.3 Pre-reduction and calibration for the determination of selenium . 7 8.4 Measurement of calibration and test solutions by hydri
12、de-generation atomic absorption spectrometry. 8 9 Plotting the calibration graph 8 10 Calculation. 8 10.1 General. 8 10.2 Calculation according to the method of standard additions 9 11 Expression of results . 9 12 Interferences . 9 13 Precision 10 14 Test report . 14 Bibliography. 15 BS ISO 20280:20
13、07 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:22:59 MDTNo reproduction or networking permitted without license from IHS -,-,- iv Foreword ISO (the International Organization for Standa
14、rdization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right t
15、o be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Sta
16、ndards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an In
17、ternational Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 2028
18、0 was prepared by Technical Committee ISO/TC 190, Soil quality, Subcommittee SC 3, Chemical methods and soil characteristics. BS ISO 20280:2007 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008
19、22:22:59 MDTNo reproduction or networking permitted without license from IHS -,-,- 1 Soil quality Determination of arsenic, antimony and selenium in aqua regia soil extracts with electrothermal or hydride-generation atomic absorption spectrometry WARNING Certain procedures, reagents and apparatus us
20、ed in this International Standard pose hazards, especially in connection with concentrated acids, toxic solutions of arsenic (As), antimony (Sb) and selenium (Se), and high-pressure gases. Users should ensure that they are familiar with the safety procedures necessary in such situations, and with an
21、y legal requirements (including waste disposal). If in any doubt, seek advice from the competent authorities. 1 Scope This International Standard specifies methods for the determination of arsenic, antimony and selenium, in an aqua regia extract of soil obtained in accordance with ISO 11466, by elec
22、trothermal or hydride-generation atomic absorption spectrometry. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced docume
23、nt (including any amendments) applies. ISO 3696:1987, Water for analytical laboratory use Specification and test methods ISO 11464:2006, Soil quality Pretreatment of samples for physico-chemical analysis ISO 11465:1993, Soil quality Determination of dry matter and water content on a mass basis Gravi
24、metric method ISO 11466:1995, Soil quality Extraction of trace elements soluble in aqua regia 3 Principle Arsenic, antimony and selenium are extracted from soil samples with aqua regia according to ISO 11466. Arsenic, antimony and selenium are determined by electrothermal atomic absorption spectrome
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