EN ISO 19340-2017 en Water quality - Determination of dissolved perchlorate - Method using ion chromatography (IC).pdf

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1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Water quality Determination of dissolved perchlorate Method using ion chromatography (IC)BS EN ISO 19340:2017EUROPEANSTANDARDNORME EUROPENNE EUROPISCHE NORMEN ISO 19340 December 2017ICS 13.060.50EnglishVersionWater qual

2、ity - Determination of dissolved perchlorate - Method using ion chromatography (IC) (ISO 19340:2017)Qualit de leau - Dtermination du perchlorate dissous- Mthode par chromatographie ionique (IC) (ISO19340:2017)Wasserbeschaffenheit - Bestimmung von gelstem Perchlorat - Verfahren mittels Ionenchromatog

3、raphie (IC) (ISO 19340:2017) This European Standard was approved by CEN on 7 October 2017.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving thisEuropean Standard the status of a national standard without any alteration.Up-to-date list

4、s and bibliographical referencesconcerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). Aversion in any other language made bytranslation under the

5、 responsibility of a CEN member into its own language and notified to the CEN-CENELEC ManagementCentre has the same status as the officialversions.CEN members are the nationalstandards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav R

6、epublic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia,Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN

7、DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2017 CEN All rights of exploitation in any form and by any means reservedworldwide for CENnational Members.Ref. No. EN ISO 19340:2017 ENational forewordThis British Standard is the UK i

8、mplementation of EN ISO 19340:2017. It is identical to ISO 19340:2017.The UK participation in its preparation was entrusted to Technical Committee EH/3/2, Physical chemical and biochemical methods.A list of organizations represented on this committee can be obtained on request to its secretary.This

9、publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 84777 6ICS 13.060.50; 71.040.30Compliance with a British Standard cannot

10、 confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 19340:2017EUROPEAN STANDARD NORME EUROPENNE EURO

11、PISCHE NORM EN ISO 19340 December 2017 ICS 13.060.50 English Version Water quality - Determination of dissolved perchlorate - Method using ion chromatography (IC) (ISO 19340:2017)Qualit de leau - Dtermination du perchlorate dissous - Mthode par chromatographie ionique (IC) (ISO 19340:2017) Wasserbes

12、chaffenheit - Bestimmung von gelstem Perchlorat - Verfahren mittels Ionenchromatographie (IC) (ISO 19340:2017) This European Standard was approved by CEN on 7 October 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Europe

13、an Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions

14、(English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belg

15、ium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden

16、, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for

17、CEN national Members. Ref. No. EN ISO 19340:2017 EBS EN ISO 19340:2017EN ISO 19340:2017 (E) 3 European foreword This document (EN ISO 19340:2017) has been prepared by Technical Committee ISO/TC 147 “Water quality“ in collaboration with Technical Committee CEN/TC 230 “Water analysis” the secretariat

18、of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2018, and conflicting national standards shall be withdrawn at the latest by June 2018. Attention is drawn to the poss

19、ibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to imp

20、lement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romani

21、a, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 19340:2017 has been approved by CEN as EN ISO 19340:2017 without any modification. BS EN ISO 19340:2017ISO 19340:2017(E)Foreword iv1 Scope . 12 Normative references 13 Terms a

22、nd definitions . 14 Interferences 15 Principle 26 Reagents 27 Apparatus . 48 Quality requirements 58.1 Performance of the separator column 58.2 Materials . 69 Sampling and sample pre-treatment 610 Procedure. 710.1 General . 710.2 Calibration 710.3 Measurement of perchlorate . 710.4 Validity check of

23、 the calibration function 811 Calculation 812 Expression of results 813 Test report . 8Annex A (normative) Elimination of dissolved sulfate, chloride, hydrogen carbonate, carbonate and metals 9Annex B (normative) Determination of perchlorate using inline matrix elimination and applying re-injection

24、analysis 14Annex C (normative) Determination of perchlorate using inline matrix elimination and concentration applying two-dimensional ion chromatography (2DIC) .18Annex D (informative) Performance data 22Bibliography .25 ISO 2017 All rights reserved iiiContents PageBS EN ISO 19340:2017ISO 19340:201

25、7(E)ForewordISO (the International Organization for Standardization) 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

26、a technical committee has been established has the right to 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 matt

27、ers of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of ISO documents should be noted. This do

28、cument was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).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

29、such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and d

30、oes not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Tra

31、de (TBT) see the following URL: www.iso.org/iso/foreword.html.This document was prepared by Technical Committee ISO/TC 147, Water quality, Subcommittee SC 2, Physical, chemical and biochemical methods.iv ISO 2017 All rights reservedBS EN ISO 19340:2017INTERNATIONAL STANDARD ISO 19340:2017(E)Water qu

32、ality Determination of dissolved perchlorate Method using ion chromatography (IC)WARNING Persons using this document should be familiar with normal laboratory practice. This document does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of

33、the user to establish appropriate safety and health practices and to determine the applicability of any other restrictions.IMPORTANT It is absolutely essential that tests conducted in accordance with this document be carried out by suitably qualified staff.1 ScopeThis document specifies a method for

34、 the determination of dissolved perchlorate in water (e.g. drinking water, mineral water, raw water, surface water, partially treated water or swimming pool water, waste water from drinking/swimming pool water treatment plants).Appropriate pre-treatment of the sample (e.g. matrix elimination) allows

35、 a direct determination of perchlorate 1 g/l.The working range is restricted by the ion-exchange capacity of the separator column. Dilution of the sample to the working range can be necessary.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of

36、their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 3696, Water for analytical laboratory use Specification and test methodsISO 8466

37、-1, Water quality Calibration and evaluation of analytical methods and estimation of performance characteristics Part 1: Statistical evaluation of the linear calibration functionISO 8466-2, Water quality Calibration and evaluation of analytical methods and estimation of performance characteristics P

38、art 2: Calibration strategy for non-linear second-order calibration functions3 Terms and definitionsNo terms and definitions are listed in this document.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.elect

39、ropedia.org/ ISO Online browsing platform: available at https:/www.iso.org/obp4 InterferencesPerchlorate is known to be susceptible to microbiological degradation in the absence of nitrate and by anaerobic bacteria (References 5 and 6). ISO 2017 All rights reserved 1BS EN ISO 19340:2017ISO 19340:201

40、7(E)Any substance that has a retention time coinciding with perchlorate and producing a detector response can interfere. Co-elution can be solved by changing separator columns, eluent strength (e.g. gradient elution), modifying the eluent with organic solvents or by selective removal of the interfer

41、ence by sample pre-treatment.Higher chloride, sulfate, nitrate, orthophosphate, hydrogen carbonate and carbonate concentrations (e.g. 1 g/l) can interfere with the determination of perchlorate (co-elution) or can have an impact on the retention time or the peak shape (distortion) or recovery of perc

42、hlorate. This effect can be checked for every matrix by standard addition and the recovery of perchlorate should be within 85 % to 115 %. Interferences can be reduced by sample dilution or with the aid of special cation exchangers (see 7.2 and Clause 9) or be resolved by the application of advanced

43、inline cutting or re-injection techniques (see Annexes A, B and C).Metals like iron or aluminium present in samples and eluent will bind to the resin material of the separator column or suppressor resulting in a loss of performance. Metal ions can be eliminated with the aid of special cation exchang

44、ers (see Annex A and Clause 9).Solid particles and organic compounds (such as mineral oils, detergents and humic acids) shorten the lifetime of the pre-column and the separator column (see Clause 9).5 PrincipleThe method requires the application of high-capacity separator columns which allow the inj

45、ection of sample volumes, e.g. up to 4 ml.If necessary, the sample is pre-treated in order to remove anions, metals, organics and solids (see Clause 9).Measurement of perchlorate is performed with or without matrix elimination and with or without pre-concentration (see 10.3 and Annexes A, B and C).P

46、erchlorate is separated by ion chromatography (IC) with suppressed conductivity detection (CD).As stationary phase, an anion exchange resin is used. Aqueous solutions of salts of monobasic acids and dibasic acids are used as eluents for isocratic or gradient elution e.g. carbonate-, hydrogen carbona

47、te-, hydroxide-eluent and an organic modifier like acetone or acetonitrile (6.3).Resolution, R, shall be checked to ensure that it complies with the required separation conditions (8.1).The concentration of perchlorate is determined after a calibration according to ISO 8466-1 or ISO 8466-2.Control e

48、xperiments are necessary to check the validity of the calibration function. Replicate determinations can be necessary. The method of standard addition can be applied if matrix interferences are expected.6 ReagentsUse only reagents of pro analysis grade free of compounds containing perchlorate. Weigh

49、 the reagents with an accuracy of 1 % of the nominal mass, unless stated otherwise. Prepare alternative concentrations or volumes of solutions as described in 6.3 to 6.5, if necessary. Alternatively, use commercially available solutions of the required concentration.6.1 Water, ISO 3696, grade 1 and with a resistivity of 18,2 M cm (25 C).6.2 Sodium perchlorate, NaClO4, 99 %.2 ISO 2017 All rights reservedBS EN ISO 19340:2017ISO 19340:2017(E)6.3 Eluents.Degas all eluents used. Take steps to avoid any renewed air pic