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BS EN 17892:2024

BS EN 17892:2024

$167.15

Water quality. Determination of selected per- and polyfluoroalkyl substances in drinking water. Method using liquid chromatography/tandem-mass spectrometry (LC-MS/MS)

Published By Publication Date Number of Pages
BSI 2024 44
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This document specifies a method for the determination of the dissolved fraction of selected perfluoroalkyl and polyfluoroalkyl substances (PFAS) in non-filtrated drinking water using liquid chromatography-tandem mass spectrometry (LC-MS/MS). The applicability of the method to other types of water like fresh waters (e.g. ground water, surface water) or treated wastewater can be validated separately for each individual case. For each target compound both, eventually occurring branched isomers and the respective non-branched isomer, are quantified together. The selected set of substances determined by this method is representative for a wide variety of PFAS. This method has been validated for the analytes specified in Table 1. The list given in this table can be modified depending on the purpose and focus of the method. The lower application range of this method can vary depending on the sensitivity of the equipment used and the matrix of the samples. For many substances to which this document applies a limit of quantification (LOQ) of 1 ng/l can be achieved. Using high volume direct injection as described in part A or SPE as described in part B of the method allows lower LOQs. Analytical limitations can occur with short-chain PFAS or PFAS with more than ten carbon atoms in the carbon chain. Actual LOQs can depend on the blank values realized by individual laboratories as well. NOTE This document enables the analysis of those 20 PFAS which are listed in point 3 of Part B of Annex III of the EU Drinking Water Directive, EU 2020/2184 [4], for the surveillance of the parametric limit value of 0,10 Āµg/l for the sum of PFAS. Furthermore, alternatives and substitutes for these PFAS substances can be analysed using this document as well. Table 1 – Analytes for which a determination was validated in accordance with this method

PDF Catalog

PDF Pages PDF Title
2 undefined
8 1 Scope
10 2 Normative references
3 Terms and definitions
11 4 Principle
5 Interferences
5.1 Sampling
5.2 Background contamination
12 5.3 Interferences encountered during liquid chromatography and mass spectrometry
6 Reagents
14 7 Apparatus
16 8 Sampling
9 Procedure
9.1 Part A: Method using direct injection
9.1.1 General
9.1.2 Sampling
9.1.3 Sample preparation
17 9.2 Part B: Method using SPE
9.2.1 General
9.2.2 Sampling
9.2.3 Sample preparation
18 9.2.4 Extraction
19 9.3 LC MS/MS operating conditions
22 9.4 Blank determination
9.4.1 General
9.4.2 Method using direct injection
9.4.3 Method using SPE
9.5 Identification
23 9.6 Calibration
9.6.1 General requirements
24 9.6.2 Calibration using an external standard
25 9.6.3 Calibration using an internal standard
26 9.6.4 Calibration check
10 Calculation
10.1 Use of a calibration curve to determine concentration
10.2 Calculation of concentration using calibration with external standards
27 10.3 Calculation of concentration using calibration with internal standards
10.4 Treatment of results outside the calibration range
10.5 Quantification of branched isomers
28 11 Determination of analyte recovery
11.1 Recovery
29 11.2 Recovery of internal standards
12 Expression of results
13 Test report
30 Annex A (informative)Performance data
37 Annex B (informative)Instrumental conditions and chromatograms

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BS EN 17892:2024
$167.15