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BSI 22/30456559 DC 2022

BSI 22/30456559 DC 2022

$13.70

BS ISO 18475. Environmental solid matrices. Determination of polychlorinated biphenyls (PCB) by gas chromatography. Mass selective detection (GC-MS) or electron-capture detection (GC-ECD)

Published By Publication Date Number of Pages
BSI 2022 48
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PDF Catalog

PDF Pages PDF Title
1 30456559-NC.pdf
3 ISO_DIS 18475 ed.2 – id.84177 Enquiry PDF (en) (1).pdf
7 Foreword
8 Introduction
9 1 Scope
2 Normative references
10 3 Terms and definitions
11 4 Principle
12 5 Interferences
5.1 Interference with sampling and extraction
5.2 Interference with GC
13 6 Safety remarks
7 Reagents
7.1 General
7.2 Reagents for extraction
7.3 Reagents for clean-up
7.3.1 Clean-up A using aluminium oxide
14 7.3.2 Clean-up B using silica gel 60 for column chromatography
7.3.3 Clean-up C using gel permeation chromatography (GPC)
7.3.4 Clean-up D using Florisil®
15 7.3.5 Clean-up E using silica H2SO4/silica NaOH
7.3.6 Clean-up F using benzenesulfonic acid/sulfuric acid
7.3.7 Clean-up G using TBA sulfite reagent
7.3.8 Clean-up H using pyrogenic copper
16 7.3.9 Clean-up I using silica/silver nitrate
7.4 Gas chromatographic analysis
17 7.5 Standards
7.5.1 General
7.5.2 Calibration standards
7.5.3 Internal and injection standards
18 7.6 Preparation of standard solutions
7.6.1 Preparation of calibration standard solutions of PCBs
19 7.6.2 Preparation of internal standard solution
7.6.3 Preparation of injection standard solution
8 Apparatus
8.1 Extraction and clean-up procedures
20 8.2 Gas chromatograph
8.2.1 General
9 Sample storage and preservation
9.1 Sample storage
21 9.2 Sample pre-treatment
10 Procedure
10.1 Blank test
10.2 Extraction
10.2.1 General
22 10.2.2 Extraction procedure€1: Samples using acetone/petroleum ether or hexane-like solvent and agitation or sonication
23 10.2.3 Extraction procedure€2: Samples using Soxhlet or pressurized liquid extraction
10.2.4 Extraction procedure€3: Samples using acetone/petroleum ether or hexane-like solvent/sodium chloride and agitation
24 10.3 Concentration
10.4 Clean-up of the extract
10.4.1 General
25 10.4.2 Clean-up A – Aluminium oxide
10.4.3 Clean-up B – Silica gel
10.4.4 Clean-up C – Gel permeation chromatography
26 10.4.5 Clean-up D – Florisil®
10.4.6 Clean-up E – Silica H2SO4/silica NaOH
10.4.7 Clean-up F – Benzenesulfonic acid/sulfuric acid
10.4.8 Clean-up G – TBA sulfite reagent
27 10.4.9 Clean-up H – Clean-up using pyrogenic copper to remove elemental sulfur and some other organic sulfur compounds
10.4.10 Clean up I – AgNO3/silica
10.5 Addition of the injection standard
10.6 Gas chromatographic analysis (GC)
10.6.1 General
10.6.2 Setting the gas chromatograph
10.7 Mass spectrometry (MS)
10.7.1 Mass spectrometric conditions
28 10.7.2 Calibration of the method using an internal standard
29 10.7.3 Measurement
10.7.4 Identification
30 10.7.5 Check on method performance
31 10.7.6 Calculation
10.8 Electron capture detection (ECD)
10.8.1 General
32 10.8.2 ECD conditions
10.8.3 Calibration of the method using internal standards
10.8.4 Measurement
10.8.5 Identification
10.8.6 Check on ECD method performance
33 10.8.7 Calculation
11 Performance characteristics
12 Precision
13 Test report
35 Annex€A (informative) Repeatability and reproducibility data
40 Annex€B (informative) Examples for gas chromatographic conditions and retention times of PCBs
41 Annex€C (informative) Calculation method for the estimation of total PCB content
48 Bibliography

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BSI 22/30456559 DC 2022
$13.70