DIN EN ISO 5667-14-2016 Water quality - Sampling - Part 14 Guidance on quality assurance and quality control of environmental water sampling and handling (ISO 5667-14 2014) German .pdf

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1、December 2016 English price group 19No 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 13.060.45!%hF“2596935www.din.de

2、DIN EN ISO 5667-14Water quality Sampling Part 14: Guidance on quality assurance and quality control of environmental water sampling and handling (ISO 566714:2014);English version EN ISO 566714:2016,English translation of DIN EN ISO 5667-14:2016-12Wasserbeschaffenheit Probenahme Teil 14: Anleitung zu

3、r Qualittssicherung und Qualittskontrolle bei der Entnahme und Handhabung von Wasserproben (ISO 566714:2014);Englische Fassung EN ISO 566714:2016,Englische bersetzung von DIN EN ISO 5667-14:2016-12Qualit de leau chantillonnage Partie 14: Lignes directrices pour le contrle de la qualit dans lchantill

4、onnage et la manutention des eaux environnementales (ISO 566714:2014);Version anglaise EN ISO 566714:2016,Traduction anglaise de DIN EN ISO 5667-14:2016-12SupersedesDIN ISO 566714:201309www.beuth.deDocument comprises 47 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language or

5、iginal shall be considered authoritative.01.17DIN EN ISO 5667-14:2016-12 2 A comma is used as the decimal marker. National foreword The text of ISO 5667-14:2014 has been prepared by Technical Committee ISO/TC 147 “Water quality” and has been taken over as EN ISO 5667-14:2016 by Technical Committee C

6、EN/TC 230 “Water analysis” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was DIN-Normenausschuss Wasserwesen (DIN Standards Committee Water Practice), Working Committee NA 119-01-03-01-01 AK Probenahme of NA 119-01-03 AA Wasseruntersuchung. Designation of the m

7、ethod: Guidance on quality assurance and quality control of environmental water sampling and handling (A 25): Method DIN EN ISO 5667-14 A 25 For the national implementation of this standard in Germany, the following should be noted: Errors in the English reference version have been corrected in this

8、 document by national footnotes. Amendments This standard differs from DIN ISO 5667-14:2013-09 as follows: a) number and title of the standard have been changed; b) the scope has been extended to include quality control techniques relating to the manual sampling of surface, potable, waste, marine an

9、d ground waters; c) the standard has been revised in form and substance; d) the following clauses specifying new requirements have been included: Clause 5 “Sampling quality”; Clause 6 “Strategy and organization”; Clause 7 “Sample collection and handling”; Clause 12 “Analysis and interpretation of qu

10、ality control data”; Clause 13 “Independent audits”; e) as regards the requirements specified in Clause 11 (formerly Clause 5), a differentiation has been made between spiked samples and spiked environmental samples; f) the informative Annexes A “Common sources of sampling error” and C “Sub-sampling

11、 using a homogenizer” have been newly added, and the former Annex A is now Annex B; g) the standard has been editorially revised. DIN EN ISO 5667-14:2016-12 3 The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 3534-1 DIN ISO 3534-1 ISO 353

12、4-2 DIN ISO 3534-2 ISO 5667-1 DIN EN ISO 5667-1 ISO 5667-3 DIN EN ISO 5667-3 ISO 11074 DIN EN ISO 11074 ISO 15839 DIN EN ISO 15839 ISO 19011 DIN EN ISO 19011 ISO/IEC 17025 DIN EN ISO/IEC 17025 ISO/TS 13530 DIN 38402-60 Previous editions DIN ISO 5667-14: 2013-09 DIN EN ISO 5667-14:2016-12 4 Expert as

13、sistance and specialized laboratories will be required to perform the analyses described in this standard. Existing 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

14、 will have to be specified. This standard has been prepared by the DIN-Normenausschuss Wasserwesen (DIN Standards Committee Water Practice) in collaboration with the Wasserchemische Gesellschaft Fachgruppe in der Gesellschaft Deutscher Chemiker (Water Chemistry Society Division of the German Chemica

15、l Society). It is part of the series Deutsche Einheitsverfahren zur Wasser-, Abwasser- und Schlammuntersuchung (German standard methods for the examination of water, waste water and sludge): Guidance on quality assurance and quality control of environmental water sampling and handling (A 25). Standa

16、rd methods published as DIN Standards are obtainable from Beuth Verlag GmbH, either individually or grouped in volumes. The standard methods included in the loose-leaf publication entitled Deutsche Einheitsverfahren zur Wasser-, Abwasser- und Schlammuntersuchung will continue to be published by Beut

17、h Verlag GmbH and Wiley-VCH Verlag GmbH Part 13: Guidance on sampling of water, waste water and related sludges Part 14: Guidance on quality assurance and quality control of environmental water sampling and handling Part 15: Guidance on preservation and handling of sludge and sediment samples5 DIN E

18、N ISO 5667-14:2016-12 EN ISO 5667-14:2016 (E) Part 16: Guidance on biotesting of samples Part 17: Guidance on sampling of suspended sediments Part 19: Guidance on sampling of marine sediments Part 20: Guidance on the use of sampling data for decision making Compliance with thresholds and classificat

19、ion systems Part 21: Guidance on sampling of drinking water distributed by tankers or means other than distribution pipes Part 22: Guidance on design and installation of groundwater sample points Part 23: Guidance on passive sampling in surface waters6DIN EN ISO 5667-14:2016-12 EN ISO 5667-14:2016 (

20、E) IntroductionSampling is the first step in carrying out chemical, physical and biological examinations. Therefore, the goal of sampling should be to obtain a representative sample for the research question and to supply it to the laboratory in the correct manner. Errors caused by improper sampling

21、, sample pre-treatment, transport and storage cannot be corrected.This part of ISO 5667 specifies quality assurance and quality control procedures and provides additional guidance on sampling of the various types of water covered in the specific parts of ISO 5667.Quality control procedures are neces

22、sary for the collection of environmental water samples for the following reasons:a) to monitor the effectiveness of sampling methodology;b) to demonstrate that the various stages of the sample collection process are adequately controlled and suited to the intended purpose, including adequate control

23、 over sources of error such as sample contamination, loss of determinand and sample instability. To achieve this, quality control procedures should provide a means of detecting sampling error, and hence a means of rejecting invalid or misleading data resulting from the sampling process;c) to quantif

24、y and control the sources of error which arise in sampling. Quantification gives a guide to the significance that sampling plays in the overall accuracy of data; andd) to provide information on suitably abbreviated quality assurance procedures that might be used for rapid sampling operations such as

25、 pollution incidents or groundwater investigations.This part of ISO 5667 is one of a group of International Standards dealing with the sampling of waters. It should be read in conjunction with the other parts of ISO 5667 and in particular with parts 1 and 3.The general terminology is in accordance w

26、ith that published.7 DIN EN ISO 5667-14:2016-12 EN ISO 5667-14:2016 (E) WARNING Consider and minimize any risks and obey safety rules. See ISO 5667-1 for certain safety precautions, including sampling from boats and from ice-covered waters.1 ScopeThis part of ISO 5667 provides guidance on the select

27、ion and use of various quality assurance and quality control techniques relating to the manual sampling of surface, potable, waste, marine and ground waters.NOTE The general principles outlined in this part of ISO 5667 might, in some circumstances, be applicable to sludge and sediment sampling.2 Nor

28、mative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments)

29、 applies.ISO 5667-1:2006, Water quality Sampling Part 1: Guidance on the design of sampling programmes and sampling techniquesISO 5667-3:2012, Water quality Sampling Part 3: Preservation and handling of water samples3 Terms and definitionsFor the purposes of this document, the following terms and de

30、finitions apply.3.1accuracycloseness of agreement between a test result or measurement result and the true valueNote 1 to entry: In practice, the accepted reference value is substituted for the true value.Note 2 to entry: The term accuracy, when applied to a set of test or measurement results, invol

31、ves a combination of random components and a common systematic error or bias component.Note 3 to entry: Accuracy refers to a combination of trueness and precision.SOURCE: ISO 3534-2:2006, 3.3.13.2biasdifference between the expectation of the test results or measurement result and a true valueNote 1

32、to entry: Bias is the total systematic error as contrasted to random error. There may be one or more systematic error components contributing to the bias. A larger systematic difference from the true value is reflected by a larger bias value.8DIN EN ISO 5667-14:2016-12 EN ISO 5667-14:2016 (E) Note 2

33、 to entry: The bias of a measuring instrument is normally estimated by averaging the error of indication over an appropriate number of repeated measurements. The error of indication is the: “indication of a measuring instrument minus a true value of the corresponding input quantity”.Note 3 to entry:

34、 In practice, the accepted reference value is substituted for the true value.SOURCE: ISO 3534-2:2006, 3.3.23.3precisioncloseness of agreement between independent test/measurement results obtained under stipulated conditionsNote 1 to entry: Precision depends only on the distribution of random errors

35、and does not relate to the true value or the specified value.Note 2 to entry: The measure of precision is usually expressed in terms of imprecision and computed as a standard deviation of the test results or measurement results. Less precision is reflected by a larger standard deviation.Note 3 to en

36、try: Quantitative measures of precision depend critically on the stipulated conditions. Repeatability conditions and reproducibility conditions are particular sets of extreme stipulated conditions.SOURCE: ISO 3534-2:2006, 3.3.43.4representativenessextent to which the condition of all the samples tak

37、en from the body of water reflects conditions in water of interest3.5blankobserved value obtained when measurement is made on a sample identical to the sample of interest, but in the absence of the determinandNote 1 to entry: Deionised water; distilled water can be used as blank samples which are pr

38、epared in the laboratory prior to sampling.3.6field blankcontainer prepared in the laboratory, using reagent water or other blank matrix, and sent with the sampling personnel for exposure to the sampling environment to verify possible contamination during samplingSOURCE: ISO 11074:2005, 4.5.33.7spik

39、eknown quantity of determinand which is added to a sample, usually for the purpose of estimating the systematic error of an analytical system by means of a recovery exercise3.8recoveryextent to which a known, added quantity of determinand in a sample can be measured by an analytical systemNote 1 to

40、entry: Recovery is calculated from the difference between results obtained from a spiked (3.7) and an unspiked aliquot of sample and is usually expressed as a percentage.3.9control chartchart on which some statistical measure of a series of samples is plotted in a particular order to steer the proce

41、ss with respect to that measure and to control and reduce variationNote 1 to entry: The particular order is usually based on time or sample number order.9 DIN EN ISO 5667-14:2016-12 EN ISO 5667-14:2016 (E) Note 2 to entry: The control chart operates most effectively when the measure is a process var

42、iable which is correlated with an ultimate product or service characteristic.SOURCE: ISO 3534-2:2006, 2.3.13.10Shewhart control chartcontrol chart with Shewhart control limits intended primarily to distinguish between the variation in the plotted measure due to random causes and that due to special

43、causesNote 1 to entry: This could be a chart using attributes (for example, proportion nonconforming) for evaluating a process, or it could be a chart using variables (for example, average and range) for evaluating a process. Examples are:a) X-bar chart the sample means are plotted in order to contr

44、ol the mean value of a variable;b) R chart the sample ranges are plotted in order to control the variability of a variable;c) s chart the sample standard deviations are plotted in order to control the variability of a variable;d) s2chart the sample variances are plotted in order to control the varia

45、bility of a variable;e) C chart the number of defectives (per batch, per day, per machine, etc.) is plotted.SOURCE: ISO 3534-2:2006, 2.3.2, modified Note 1 to entry has been added.3.11action limitscontrol limits between which the statistic under consideration lies with a very high probability when t

46、he process is under statistical controlNote 1 to entry: Action lines are drawn on a control chart to represent action limits.Note 2 to entry: When the measure plotted lies beyond an action limit, appropriate corrective action is taken on the process.Note 3 to entry: These limits are based on the ass

47、umption that only 0,3 % of normally distributed results will fall outside these limits. Such an occurrence would strongly indicate that additional, assignable causes of variation might be present and that action might be required to identify and reduce them.SOURCE: ISO 3534-2:2006, 2.4.4, modified N

48、ote 3 to entry has been added.3.12warning limitscontrol limits between which the statistic under consideration lies with a high probability when the process is under statistical controlNote 1 to entry: Warning lines are drawn on a control chart to represent warning limits.Note 2 to entry: When the v

49、alue of the statistic plotted lies outside a warning limit, but within the action limit (3.11), increased supervision of the process, to pre-specified rules, is generally required.Note 3 to entry: The limits are calculated from the standard deviation of the statistic under consideration of at least 10 samples. Warning and action control limits are applied to individual sampling results.SOURCE: ISO 3534-2:2006, 2.4.3, modified Note 3 to entry has been added.3.13uncertaintymeasurement uncertaintyn