Table 2 : Summary of the analytical system for each laboratory Laboratory Thermodesorption GC Detection code unspecified unspecified unspecified JRC TurboMatrix 650 ATD NPL Varian 3900 FID Perkin Elmer TurboMatrix 350 ATD Autosystem XL VSL FID Perkin Elmer Perkin Elmer ATD 350 Clarus 500 METAS FID Perkin Elmer Perkin Elmer ATD 350 Clarus 600 LNE FID Perkin Elmer Perkin Elmer Traceability of results for samples is made by the calibration of the previous instruments with a reference gas mixture. A summary of the different calibrations performed is available in table 3. Table 3 : Summary of calibration strategy for each laboratory Laboratory Calibration range Standard used code Gas mixture concentration (nmol/mol) Benzene : 9.8 ± 0.2 Calibration curve of 5 points covering Toluene : 9.69 ± 0.19 JRC an amount range from 30 to 600 ng Ethylbenzene : 10.23 ± 0.2 M+P-xylene : 20.95 ± 0.21 O-xylene : 10.38 ± 0.21 Reference gas mixture prepared by NPL Concentration (nmol/mol) Single point calibration Benzene : 248.53 ± 2.49 NPL Toluene : 251.17 ± 2.51 Calibration range for each compound Ethylbenzene : 253.46 ± 2.53 400 - 700 ng M-xylene : 250.12 ± 2.50 P-xylene : 251.89 ± 2.52 O-xylene : 252.15 ± 2.52 CX & TA (LNE) 5 different gas mixtures depending on TA (VSL) the amount of BTEX to load 400 ng (x3) 50 ng (x3) 500 ng (x3) BTEX mixture concentration (nmol/mol) 70 ng (x3) VSL 550 ng (x3) 100 ng (x6) LNE samples 600 ng (x3) VSL samples 125 ng (x3) 100 650 ng (x6) 10 150 ng (x6) 150 700 ng (x3) 25 200 ng (x3) 200 800 ng (x3) Calibration range per compound (ng) BTEX gas mixtures generated METAS
Table 2 : Summary of the analytical system for each laboratory Laboratory code Thermodesorption GC Detection JRC unspecified unspecified unspecified NPL TurboMatrix 650 ATD Perkin Elmer Varian 3900 FID VSL TurboMatrix 350 ATD Perkin Elmer Autosystem XL Perkin Elmer FID METAS ATD 350 Perkin Elmer Clarus 500 Perkin Elmer FID LNE ATD 350 Perkin Elmer Clarus 600 Perkin Elmer FID Traceability of results for samples is made by the calibration of the previous instruments with a reference gas mixture. A summary of the different calibrations performed is available in table 3. Table 3 : Summary of calibration strategy for each laboratory Laboratory code Calibration range Standard used JRC Calibration curve of 5 points covering an amount range from 30 to 600 ng Gas mixture concentration (nmol/mol) Benzene : 9.8 ± 0.2 Toluene : 9.69 ± 0.19 Ethylbenzene : 10.23 ± 0.2 M+P-xylene : 20.95 ± 0.21 O-xylene : 10.38 ± 0.21 NPL Single point calibration Calibration range for each compound 400 - 700 ng Reference gas mixture prepared by NPL Concentration (nmol/mol) Benzene : 248.53 ± 2.49 Toluene : 251.17 ± 2.51 Ethylbenzene : 253.46 ± 2.53 M-xylene : 250.12 ± 2.50 P-xylene : 251.89 ± 2.52 O-xylene : 252.15 ± 2.52 VSL CX & TA (LNE) 400 ng (x3) 500 ng (x3) 550 ng (x3) 600 ng (x3) 650 ng (x6) 700 ng (x3) 800 ng (x3) TA (VSL) 50 ng (x3) 70 ng (x3) 100 ng (x6) 125 ng (x3) 150 ng (x6) 200 ng (x3) 5 different gas mixtures depending on the amount of BTEX to load BTEX mixture concentration (nmol/mol) LNE samples 100 150 200 VSL samples 10 25 METAS Calibration range per compound (ng) BTEX gas mixtures generated
EURAMET-P1192_METCHEM_Final_Report.docx