EN 1948-4:2010+A1:2013

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Principle of the measurement procedure
6 Device, materials and [13]C[12]-labelled
   standards
7 Safety measures
8 Measurement procedure
9 Method validation
10 Quality control requirements for the
   measurement
11 Quality assurance criteria for
   extraction/clean-up/quantification procedure
   blanks
12 Performance characteristics
13 Interferences (informative)
Annex A (informative) - Toxicity and toxic equivalency
Annex B (informative) - Examples of extraction and
        clean-up procedures
Annex C (informative) - Evaluation of the performance
        characteristics
Annex D (informative) - Recommendations for measuring
        high concentrations of dioxin-like PCBs
Annex E (informative) - Possible interferences in
        dioxin-like PCB analysis
Annex F (informative) - Measurement of the marker
        PCBs 28, 52, 101, 138, 153, and 180 in addition
        to the 12 dioxin-like PCBs
Annex G (informative) - Measurement of hexachlorobenzene
        (HCB)
Annex H (informative) - Significant technical changes
Annex ZA (informative) - Relationship between this
         European Standard and the essential requirements
         of EU Directives
Bibliography

This European Standard specifies sampling from stationary sources, extraction, clean-up, identification and quantification procedures of the dioxin-like PCBs. The procedure described lays down requirements to measure the PCB congeners given in Annex A (see Table A.1). It is applicable to the 12 non- and mono-ortho PCB designated by the WHO. It is optimised to measure PCB concentrations of about 0,01 ng WHO-TEQPCB/m3. In addition to the 12 non- and mono-ortho-PCB the present document is also applicable to measure further PCB-congeners like the "marker PCB" 28, 52, 101, 138, 153, 180 (see Annex F).This document specifies a framework of quality control requirements which should be fulfilled by any PCB sampling, extraction, clean-up, identification and quantification methods to be applied. As a result of their similar chemical behaviour PCBs, as shown in the validation campaign, can be sampled from stationary sources together with the PCDDs/PCDFs. Therefore, it is possible to measure PCBs together with PCDDs/PCDFs by applying EN 1948-1, -2, -3 and -4. The complete sampling procedure is described in EN 1948-1. Each of the three sampling methods of EN 1948-1 can be combined with the methods described in this document to complete the measurement procedure. EN 1948-1 is an integral part of the complete measurement procedure and is necessary for the determination of PCBs. The analyses of the following PCB congeners is described in this European Standard and is validated in the validation campaign:a)Non-ortho substituted PCBs1)3,3’,4,4’-TeCB(77)2)3,4,4’,5-TeCB (81)3)3,3’,4,4’,5-PeCB (126)4)3,3’,4,4’,5,5’-HxCB (169)b)Mono-ortho substituted PCBs1)2,3,3’,4,4’-PeCB (105)2)2,3,4,4’,5-PeCB (114)3)2,3’,4,4’,5-PeCB (118)4)2’,3,4,4’,5-PeCB (123)5)2,3,3’,4,4’,5-HxCB (156)6)2,3,3’,4,4’,5’-HxCB (157)7)2,3’,4,4’,5,5’-HxCB (167)8)2,3,3’,4,4’,5,5’-HpCB (189)c)Marker PCBs1)2,4,4'- TriCB (28)2)2,2',5,5'-TeCB (52)3)2,2',4,5,5'- PeCB