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1、BRITISH STANDARD BS EN ISO 11885:1998 BS 6068-2.60: 1998 Water quality Determination of 33 elements by inductively coupled plasma atomic emission spectroscopy The European Standard EN 11885:1997 has the status of a British Standard ICS 13.060.01 BS EN ISO 11885:1998 This British Standard, having bee
2、n prepared under the direction of the Health and Environment Sector Board, was published under the authority of the Standards Board and comes into effect on 15 April 1998 BSI 04-1999 ISBN 0 580 29041 7 Amendments issued since publication Amd. No.DateComments BS EN ISO 11885:1998 BSI 04-1999i Content
3、s Page National forewordii Foreword2 Forewordii Text of EN ISO 11885:19971 BS EN ISO 11885:1998 ii BSI 04-1999 National foreword This British Standard is the English language version of EN ISO 11885:1997. It is identical with ISO 11885:1996. The UK participation in its preparation was entrusted by T
4、echnical Committee EH/3, Water quality, to Subcommittee EH/3/2, Physical, chemical and biochemical methods, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change,
5、 and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC stand
6、ards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under th
7、e section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. BS EN ISO 11885 is one of a series of standards on water quality, others of which have been, or will be, published as Sections of BS 6068. This standard has t
8、herefore been given the secondary identifier BS 6068-2.60. The various Sections of BS 6068 are comprised within Parts 1 to 7, which, together with Part 0, are listed below. Part 0: Introduction; Part 1: Glossary; Part 2: Physical, chemical and biochemical methods; Part 3: Radiological methods; Part
9、4: Microbiological methods; Part 5: Biological methods; Part 6: Sampling; Part 7: Precision and accuracy. NOTEThe tests described in this British Standard should only be carried out by suitably qualified persons with an appropriate level of chemical expertise. Standard chemical procedures should be
10、followed throughout. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages Thi
11、s document comprises a front cover, an inside front cover, pages i and ii, the EN ISO title page, page 2, the ISO title page, page ii, pages 1 to 10, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indi
12、cated in the amendment table on the inside front cover. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO11885 November 1997 ICS 13.060.01 Descriptors: See ISO document English version Water quality Determination of 33 elements by inductively coupled plasma atomic emission spectroscopy (ISO 1
13、1885:1996) Qualit de leau Dosage de 33 lments par spectroscopie dmission atomique avec plasma coupl par induction (ISO 11885:1996) Wasserbeschaffenheit Bestimmung von 33 Elementen durch induktiv gekoppelte Plasma-Atom-Emissionsspektrometrie (ISO 11885:1996) This European Standard was approved by CEN
14、 on 30 October 1997. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards
15、 may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (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
16、Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Ki
17、ngdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 11885
18、:1997 E EN ISO 11885:1997 BSI 04-1999 2 Foreword The text of the International Standard from Technical Committee ISO/TC 147 “Water quality” of the International Organization for Standardization (ISO) has been taken over as an European Standard by Technical Committee CEN/TC 230 “Water analysis”, the
19、secretariat 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 month of May 1998, and conflicting national standards shall be withdrawn at the latest by May 1998. According t
20、o the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spai
21、n, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO 11885:1996 has been approved by CEN as a European Standard without any modification. NOTENormative references to International Standards are listed in Annex ZA (normative). Contents Page Fore
22、word2 1Scope1 2Normative reference4 3Definitions4 4Principle5 5Reagents5 6Apparatus6 7Sample handling and preservation6 8Instrumental method and analytical procedure7 9Calculation and expression of results8 10Precision9 11Test report9 Annex A (informative) Results of an interlaboratory trial10 Annex
23、 ZA (normative) Normative references to international publications with their relevant European publicationsInside back cover Table 1 Recommended wavelengths and typical detection limits2 Table 2 Spectral interferences3 Table 3 Typical precision and accuracy data9 Table A.1 Statistical characteristi
24、cs of the method Standard solutions10 EN ISO 11885:1997 ii BSI 04-1999 Foreword ISO (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 techn
25、ical committees. Each member body interested in a subject for which 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
26、with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % o
27、f the member bodies casting a vote. International Standard ISO 11885 was prepared by Technical Committee ISO/TC 147, Water quality, Subcommittee SC 2, Physical, chemical and biochemical methods. Annex A of this International Standard is for information only. Descriptors: Water, quality, water pollut
28、ion, water tests, chemical analysis, determination of content, metals, spectrometric method. EN ISO 11885:1997 BSI 04-19991 1 Scope 1.1 Field of application This International Standard specifies a method for the determination of dissolved, particulate or total elements in raw, potable and waste wate
29、r for the following elements: aluminium, antimony, arsenic, barium, beryllium, bismuth, boron, cadmium, calcium, chromium, cobalt, copper, iron, lead, lithium, magnesium, manganese, molybdenum, nickel, phosphorus, potassium, selenium, silicon, silver, sodium, strontium, sulfur, tin, titanium, tungst
30、en, vanadium, zinc, zirconium. Table 1 lists these elements along with the recommended wavelengths and typical estimated instrumental detection limits using conventional pneumatic nebulization. Actual working detection limits are sample-dependent and as the sample matrix varies, these concentrations
31、 can also vary. Because of the differences between various makes and models of satisfactory instruments, no detailed instrumental operating instructions can be provided. Instead, the analyst will need to refer to the instructions provided by the manufacturer of the particular instrument. 1.2 Interfe
32、rences Table 2 lists elements and the most important spectral interferences at the wavelengths recommended for analysis. Several types of interference effects can contribute to inaccuracies in the determination of trace elements. They can be summarized as follows. a) Spectral interferences, categori
33、zed as: 1) overlap of a spectral line from another element; these effects can be compensated by utilizing computer correction of the raw data; 2) unresolved overlap of molecular band spectra; these effects can possibly be overcome by selection of an alternative wavelength. If the appropriate equipme
34、nt is available, wavelength scanning can be performed to detect potential spectral interferences. b) Background influences, categorized as: 2) background contribution from continuous or recombination phenomena; 3) background contribution from stray light from the line emission of elements in high co
35、ncentration. The effect of background interferences can usually be compensated by background correction adjacent to the analyte line. EN ISO 11885:1997 2 BSI 04-1999 Table 1 Recommended wavelengths and typical detection limits ElementWavelength nm Limit of detection mg/l ElementWavelength nm Limit o
36、f detection mg/l Ag328,068 338,289 0,02 0,02 Mo202,030 204,598 0,03 0,05 Al308,215 396,152 167,08 0,1 0,1 0,04 Na589,592 588,995 330,237 0,1 0,02 0,02 As193,696 197,197 189,042 0,1 0,1 0,08 Ni P 231,604 178,287 213,618 0,5 B208,959 249,678 247,773 0,005 0,006 0,01 Pb 214,914 177,428 220,353 0,1 0,1
37、0,5 0,2 Ba233,527 455,403 493,409 313,042 234,861 0,004 0,002 0,003 0,002 0,005 S 283,306 182,036 180,669 0,07 0,5 0,5 313,107Sb206,833 217,581 0,1 0,1 Bi223,061 306,772 0,04 0,08Se196,026 203,985 0,1 0,1 Ca315,887 317,933 393,366 0,1 0,01 0,002 Si251,611 212,412 288,158 0,02 0,02 0,03 Cd214,438 226
38、,502 228,802 0,01 0,01 0,01 Sn235,848 189,980 0,1 0,1 Co228,6160,01Sr407,771 421,552 0,0005 0,01 Cr205,552 267,716 283,563 284,325 0,01 0,01 0,01 0,01 Ti 460,733 334,941 336,121 337,280 0,1 0,005 0,01 0,01 Cu324,754 327,396 0,01 0,01 368,5200,01 V290,8820,01 Fe259,940 238,20 0,02292,402 310,230 311,
39、071 0,01 0,01 0,01 K766,490 769,902W207,911 209,860 0,03 0,06 Li460,286 670,784 0,9 0,002 239,709 222,589 202,998 0,06 0,06 0,06 Mg279,079 279,553 285,213 0,03 0,0005 0,001 Zn206,191 213,856 0,01 0,005 Mn257,610 293,306 0,002 0,02 Zr343,823 354,262 339,198 0,01 0,05 EN ISO 11885:1997 BSI 04-19993 Ta
40、ble 2 Spectral interferences ElementWavelength nm Interfering elements ElementWavelength nm Interfering elements Ag328,068 338,289Cr Mo202,030 204,598 Al, Fe Al308,215 396,152 167,08 Mn, V, Fe Mo, Cu Fe Na589,592 588,995 330,237 Ar As193,696 197,197 189,042 Fe, Al Fe, Al Al Ni P 231,604 178,287 213,
41、618 Co I B208,959 249,678 247,773 Al, Mo Fe, Cr Fe 214,914 177,428 Cu, Fe, Mo, Zn Cu, Al, Mg Cu Pb220,353 Ba233,527Fe, V283,306Al, Co, Ti 455,403 493,409 313,042 234,861 313,107 V Fe S Sb 182,036 180,669 206,833 217,581 Cr, Mo Ca Cr, Mg, Co, Mn Bi223,061 306,772 Cu Fe, VSe196,026 203,985 Ca315,887 3
42、17,933 393,366 Co Fe, VSi251,611 212,412 288,158 Cd214,438 226,502 228,802 Fe Fe As, Co Sn235,848 189,980 Mo, Co Co228,616TiSr407,771 421,552 Cr205,552 267,716 283,563 284,325 Fe, Mo Mn, V Fe, Mo Fe Ti 460,733 334,941 336,121 337,280 Ca, Cr, Si Cu324,754 327,396 Ti, Fe368,520Co, Cr Fe 259,940 238,20
43、Co V290,882 292,402 310,230 311,071 Fe, Mo Fe, Mo, Cr Fe, Mn, Ti, Cr K766,490 769,90 Mg, Ar W207,911 209,860 Li460,286 670,784 Fe239,709 222,589 202,998 Cu Mg279,079 279,553 285,213Fe Zn206,191 213,856 Cr Cu, Ni, Fe Mn257,610 293,306 Fe, Mo, Cr Al, Fe Zr343,823 354,262 339,198 EN ISO 11885:1997 4 BS
44、I 04-1999 Physical interferences are generally considered to be effects associated with the sample nebulization and transport processes. Such properties as change in viscosity and surface tension can cause significant inaccuracies, especially in samples which may contain high concentrations of disso
45、lved solids and/or acid. If these types of interference are operative, they will be reduced by dilution of the sample and/or utilization of standard addition techniques. Chemical interferences are characterized by molecular compound formation, ionization effects and solute vaporization effects. Thes
46、e effects are overcome by buffering of the sample matrix and by standard addition procedures (see 8.1.3.2). Whenever a new or unusual sample matrix is encountered, a series of tests should be performed prior to reporting concentration data for analyte elements. When investigating a new sample matrix
47、, comparison tests can be performed using other analytical techniques, such as atomic absorption spectrometry. Serial dilution If the analyte concentration is sufficiently high (minimally 10 the instrumental detection limit after dilution), an analysis of a dilution needs to agree within 5 % of the
48、original determination (or within some acceptable control limit that has been established for that matrix). If not, a chemical or physical interference effect could be responsible. Calibration by standard addition (see 8.1.3.2) A spike added to the original determination at a minimum level of 10 the
49、 instrumental detection limit (maximum 100 ) needs to be recovered to within 90 % to 110 %, or within the established control limit for that matrix. If not, a matrix effect should be suspected. The use of a standard addition analysis procedure can usually compensate for this effect. 2 Normative reference The following standard contains provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the edition indicated was valid. All standar