Target Molecules

HCHO

Fluorescence

20 pptv

5 min

Year-round

1,3

NMHCs/CH₄/DMS

GC

1/5/100pptv

hourly

Year-round

1

Halocarbons/RONO₂

Whole air samples

<< 1 pptv

weekly

Year-round

1,2,3

Halocarbons/RONO₂

GC/MS

< 1 pptv

hourly

Summer

1,2

NO/NO₂

Chemiluminescence

1 pptv

1 min

Year-round

1,2,3

PAN

GC/ECD

< 1 pptv

30 min

Year-round

1,2,3

NO₃

BL – DOAS

0.4 pptv

10 min

Year-round

1,2

BrO/IO/OIO

BL – DOAS

1/0.2/0.5 pptv

10 min

Year-round

1

OH/HO₂

FAGE (LIF technique)

1x10⁵/1x10⁶

molec.cm^-3

2.5 min

Summer

1

HO₂/RO₂

PERCA

1 pptv

1 min

Summer

1

H₂O₂/CH₃OOH

HPLC

50 pptv

continuous

Summer

1,3

HONO

Colorimetry

1-2 pptv

continuous

Year-round

1,2,3

H₂O

Frost point hygrometer

N/A

10 sec

Year-round

1

HNO₃

Denuder sampling

< 1 pptv

Day/weekly

Year-round

1,2,3

O₃

uv absorption

1 ppbv

10 sec

Year-round

1

CO

RGA

3 ppbv

10 sec

Year-round

1,3

CN

Particle counting

0.02 mm

< 5 sec

Summer

1

Photolysis rates

Filter radiometers

-

< 5 sec

Year-round

1,2,3

Snow NO₃^-, NO₂^-

IC

< 1 ppb

daily

Year-round

3

Particulate NO₃^-, NO₂ ^-, Br^-

Filter sampling and IC analysis

< 1 pptv

daily/weekly

Year-round

1,2,3