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GC-FID ch1. GC-MS. GC-FID ch2. Instrument. Appendix 3. Cape Verde VOC standards and QC/A . Species measured. C 2 -C 7 NMHC. O-VOCs, DMS, BTEX. Halocarbons, COS, BTEX. Benzene butane. DMS, BTEX. NMHC. involatiles. COS. halocarbons. DMS, OVOCS. Operational standard. NPL NMHC

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Appendix 3. Cape Verde VOC standards and QC/A

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Appendix 3 cape verde voc standards and qc a l.jpg

GC-FID

ch1

GC-MS

GC-FID

ch2

Instrument

Appendix 3. Cape Verde VOC standards and QC/A

Species measured

C2-C7 NMHC

O-VOCs, DMS, BTEX

Halocarbons, COS, BTEX

Benzene

butane

DMS, BTEX

NMHC

involatiles

COS

halocarbons

DMS, OVOCS

Operational standard

NPL

NMHC

standards

Permeation sources

DMS, BTEX, halocarbons

CH3CN, OVOCs, CCl4

Bristol

Halocarbon

standards

In air

COS

In air

CCl4

BTEX

NMHC

OVOC

NMHC

All

External

Validation

UK

NETCEN

EU wide

comparison

ACCENT

NIST traceable

weights

AGAGE

NASA,

NOAA

Others?

Apel Riemer

NCAR

UCI

AGAGE

others

NPL

Species for internal inter- instrument consistency

Species for operational standards internal consistency

External national and international validation of calibration


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