NEN EN 12766-3 : 2004 C1 2007

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and materials
   5.1 Reagents and materials for the sample preparation
       (clean-up)
   5.2 Reagents and materials for the GC analysis
   5.3 Standard and reference solutions
   5.4 Base oil
   5.5 Check sample
6 Apparatus
   6.1 General provisions
   6.2 Gas chromatograph
   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 and resolution
11 Calibration
   11.1 General
   11.2 Determination of experimental relative retention
        times (ERRT[i])
   11.3 Determination of experimental relative response factors
        (ERRF[i,j]) for PCT
   11.4 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 General Informat
   15.2 Repeatability
   15.3 Reproducibility
16 Test report
Annex A (normative) Typical chromatograms
Bibliography

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