1、December 2015 English price group 8No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 13.060.50!%In“2385975www.din.deD
2、IN ISO 11349Water quality Determination of low-volatility lipophilic substances Gravimetric method (ISO 11349:2010),English translation of DIN ISO 11349:2015-12Wasserbeschaffenheit Bestimmung von schwerflchtigen lipophilen Stoffen Gravimetrisches Verfahren (ISO 11349:2010),Englische bersetzung von D
3、IN ISO 11349:2015-12Qualit de leau Dosage des substances lipophiles peu volatiles Mthode gravimtrique (ISO 11349:2010),Traduction anglaise de DIN ISO 11349:2015-12SupersedesDIN 38409-56:2009-06www.beuth.deDocument comprises 12 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-lang
4、uage original shall be considered authoritative.11.15 Contents Page National foreword 3 National Annex NA (informative) Bibliography 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions 6 4 Principle . 65 Interferences 7 6 Reagents 7 7 Apparatus 7 8 Sampling and sample conservation 8 9 P
5、rocedure 8 9.1 Blank determination . 8 9.2 Recovery check. 8 9.3 Extraction 8 9.4 Concentration step . 9 10 Calculation . 9 11 Expression of results . 9 12 Test report 10 Annex A (informative) Precision data . 11 Bibliography . 12 A comma is used as the decimal marker. DIN ISO 11349:2015-12 2 Nation
6、al foreword This document (ISO 11349:2010) has been prepared by Technical Committee ISO/TC 147 “Water quality” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was DIN-Normenausschuss Wasserwesen (DIN Standards Committee Water Practice), Working Committee NA 119-0
7、1-03-01-08 AK Schwerflchtige lipophile Verbindungen of NA 119-01-03 AA Wasseruntersuchung. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. DIN shall not be held responsible for identifying any or all such patent rights. Designatio
8、n of the method: Determination of low-volatility lipophilic substances - Gravimetric method (H 56): Method DIN ISO 11349 H 56 The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 3696 DIN ISO 3696 ISO 4788 DIN EN ISO 4788 ISO 5725-2 DIN ISO
9、5725-2 Amendments This standard differs from DIN 38409-56:2009-06 as follows: a) the water to be used for testing shall be grade 3, distilled or deionized water (6.1); b) the sodium sulfate used shall be “coarse grained” (6.3); c) the magnesium sulfate heptahydrate used shall be “coarse grained” (6.
10、4); d) the oil used as test substance for determination of recovery shall be “vegetable oil” (6.6); e) a Note relating to the type of oil used has been added to 6.6; f) material and size of the measuring cylinders used for testing have been specified (7.8); g) In Table A.1 giving precision data, the
11、 unit used for the mass concentration “mg/l” has been corrected; h) the standard has been editorially revised. Previous editions DIN 38409-56: 2009-06 DIN ISO 11349:2015-12 3 Expert assistance and specialized laboratories will be required to perform the analyses described in this standard. Existing
12、safety requirements are to be observed. Depending on the objective of the analysis, a check shall be made on a case-by-case basis as to whether and to what extent additional conditions will have to be specified. This standard has been prepared by the DIN-Normenausschuss Wasserwesen (DIN Standards Co
13、mmittee Water Practice) in collaboration with the Wasserchemische Gesellschaft Fachgruppe in der Gesellschaft Deutscher Chemiker (Water Chemistry Society Division of the German Chemical Society). It is part of the series Deutsche Einheitsverfahren zur Wasser-, Abwasser- und Schlammuntersuchung (Germ
14、an standard methods for the examination of water, waste water and sludge): Determination of low-volatility lipophilic substances - Gravimetric method (H 56). Standard methods published as DIN Standards are obtainable from Beuth Verlag GmbH, either individually or grouped in volumes. The standard met
15、hods included in the loose-leaf publication entitled Deutsche Einheitsverfahren zur Wasser-, Abwasser- und Schlammuntersuchung will continue to be published by Wiley-VCH Verlag GmbH m2is the mass, in milligrams, of the flask with contents (9.4); m1is the mass, in milligrams, of the empty flask (9.3)
16、; V is the volume, in litres, of the test portion (9.3). 11 Expression of results Report the mass concentration, in milligrams per litre, of low-volatility lipophilic substances to two significant figures. EXAMPLE Low-volatility lipophilic substances: 15 mg/l. DIN ISO 11349:2015-12 9 12 Test report
17、The test report shall contain at least the following information: a) the test method used, together with a reference to this International Standard (ISO 11349:2010); b) all the information required for the complete identification of the sample; c) details of sampling, sample transportation, and samp
18、le preparation; d) details of any sample pretreatment; e) test result, according to Clause 11; f) all operation details not specified in this International Standard, or regarded as optional, together with details of any incident that may have influenced the result(s). DIN ISO 11349:2015-12 10 Annex
19、A (informative) Precision data The results from an interlaboratory trial, carried out in Germany in spring 2007 are given in Table A.1. Table A.1 Precision data calculated in accordance with ISO 5725-22Sample 1 2 Matrix Parameter Industrial waste water I Industrial waste water II No. laboratories af
20、ter elimination of outliers, p 16 13 No. results after elimination of outliers, n 34 28 Percentage of outliers, nOP, % 5,6 12,5 Total mean of all analytical results (after elimination of outliers), , mg/l 14,3 200,4 Reproducibility standard deviation, sR, mg/l 4,88 19,93 Coefficient of variation of
21、reproducibility, CV,R, % 34,2 9,9 Repeatability standard deviation, sr, mg/l 2,03 10,62 Coefficient of variation of repeatability, CV,r, % 14,2 5,3 DIN ISO 11349:2015-12 11 Bibliography 1 ISO 4788, Laboratory glassware Graduated measuring cylinders 2 ISO 5725-2, Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method DIN ISO 11349:2015-12 12
