PREN 12766-3 : DRAFT 2001

Foreword
1 Scope
2 Normative references
3 Definitions
   3.1 Polychlorinated biphenyl (PCB)
   3.2 Polychlorinated terphenyl (PCT)
   3.3 Polychlorinated benzyl toluene PCBT
   3.4 Congener
   3.5 DCB
4 Principle
5 Reagents and Materials
   5.1 Reagents and materials for the sample preparation (clean-up)
       5.1.1 Solvent
       5.1.2 Sodium sulphate
       5.1.3 Sulphuric acid
       5.1.4 Separation material
       5.1.5 Columns
       5.1.6 Column adapter
       5.1.7 Vacuum manifold column processor
   5.2 Reagents and materials for the GC analysis
       5.2.1 Hexachlorobenazene
       5.2.2 Carrier gas
       5.2.3 Make-up gas
   5.3 Standard and reference solutions
       5.3.1 PCB congener 30 solution
       5.3.2 PCB congener 209 (DCB) solution
       5.3.3 Internal standard solution
       5.3.4 Ugilec 141 (Ugilec T)
       5.3.5 PCT (Aroclor 5442)
       5.3.6 PCT (Aroclor 5460)
       5.3.7 Standard stock solutions (Ugilec 141)
       5.3.8 Standard stock solutions (PCT Aroclor 5442)
       5.3.9 Standard stock solutions (PCT Aroclor 5460)
   5.4 Base oil
   5.5 Check sample
6 Apparatus
   6.1 General provisions
   6.2 Gas chromatograph as described in EN 12766-1 clause 6.2
   6.3 Columns
7 Sampling and sample preparation
8 Clean-up Procedure
9 Operating conditions for the GC apparatus
   9.1 Setting up the GC apparatus
   9.2 Injectors
   9.3 Oven temperature programme
   9.4 Carrier gas flow rate
   9.5 Electron capture detector settings
10 Check on instrumental performance
   10.1 Resolution check
11 Calibration
   11.1 Determination of Experimental Relative Retention Times
        (ERRT[i])
   11.2 Determination of experimental relative response factors
        (ERRF[i,j]) for PCT
   11.3 Determination of experimental relative response factors
        (ERRF[i]) for PCBT
12 Measurement
13 Calculation of results
   13.1 Calculation of PCTs
   13.2 Calculation of PCBTs
14 Calculation of the total content of PCB and PCB related products
15 Precision
   15.1 Repeatability
   15.2 Reproducibility
16 Test report
Annex A (normative)
Bibliography

Describes a method of test for the determination of polychlorinated terphenyis (PCT) and polychlorinated benzyl toluenes (PCBT) in petroleum products and related materials by means of a specified gas chromatographic separation procedure.