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FTIR Detection Limits

Species

300 Meter

100 Meter

 

Species

300 Meter

100 Meter

 

Open Path

Cell*

 

 

Open Path

Cell*

acetaldehyde

20

30

 

hydrocarbon continuum

2

5

acetic acid

5

7 SL

 

hydrogen chloride

1

3

acetone

30

10

 

hydrogen cyanide

5

4

acetonitrile

50

70

 

hydrogen sulfide

300

500

acetylene

2

2

 

isobutane

2

1

acrolein

5

7

 

isobutanol

4

6 SL

acrylic acid

10

5 SL

 

isobutyl acetate

5

7

acrylonitrile

6

10

 

isobutylene

4

4

ammonia

1

3 SL

 

isoprene

4

5

benzene

20

2**

 

isopropanol

10

10 SL

1,3-butadiene

1

3

 

isopropyl ether

10

5

butane

HC

 

 

methanol

4

6 SL

butanol

15

20 SL

 

methylamine

20

20 SL

1-butene

10

15

 

methyl benzoate

20

30

cis-2-butene

25

30

 

methyl chloride

60

80

trans-2-butene

10

15

 

methylene chloride

5

8

butyl acetate

5

7

 

methyl ether

10

15

carbon disulfide

dry only

50

 

methyl ethyl ketone

40

60 SL

carbon monoxide

1

4

 

methyl isobutyl ketone

15

25 SL

carbon tetrachloride

2

2

 

methyl mercaptan

40

60

carbonyl sulfide

2

3

 

methyl methacrylate

5

5

chlorobenzene

10

10

 

2-methyl propene

2

4

chloroethane

10

15

 

morphaline

2

3

chloroform

2

2

 

nitric acid

1

2

m-cresol

20

15

 

nitric oxide

25

20

o-cresol

4

8

 

nitrogen dioxide

50

50

p-cresol

10

15

 

nitrous acid

5

7

cyclohexane

3

5

 

ozone

3

5

1,2-dibromoethane

5

7

 

pentane

HC

 

m-dichlorobenzene

3

5

 

phosgene

1

2

o-dichlorobenzene

3

5

 

phosphine

2

3

p-dichlorobenzene

2

3

 

propane

10

10

1,1-dichloroethane

10

10

 

propanol

20

30 SL

1,2-dichloroethane

30

40

 

propionaldehyde

10

15

1,1-dichloroehtylene

2

4

 

propylene

4

10

dimethylamine

20

30 SL

 

propylene dichloride

10

15

dimethyl disulfide

10

15

 

propylene oxide

10

15

1,4 dimethyl piperazine

3

5

 

pyridine

20

20

1,4 dioxane

2

3

 

silane

1

1

ethane

10

10

 

styrene

1

2

etanol

10

10 SL

 

sulfur dioxide

30

30

ethyl acetate

4

4

 

sulfur hexafluoride

<1

0.1

ethylamine

20

10 SL

 

1,1,1,2-tetrachloroethane

4

6

ethylbenzene

20

30**

 

1,1,2,2-tetrachloroethane

20

16

ethylene

1

3

 

tetrachloroethylene

2

2

ethylene oxide

10

15

 

toluene

25

10**

ethyl mercaptan

50

70

 

1,1,1-trichloroethane

4

10

formaldehyde

1

1

 

1,1,2-trichloroethane

10

15

formic acid

2

3 SL

 

trichloroethylene

2

3

furan

3

5

 

trimethylamine

10

15 SL

halocarb-11 (CCl3F)

1

1

 

1,2,4-trimethylbenzene

5

7

halocarb-12 (CCl2F2)

1

1

 

vinyl chloride

2

4

halocarb-22 (CHClF2)

1

1

 

m-xylene

10

10**

halocarb-113 (CFCl2CF2Cl)

2

2

 

o-xylene

20

5**

hexafluoropropene

1

2

 

p-xylene

20

10**

 

NOTES:

HC => this species would normally be calculated as part of the hydrocarbon continuum
* => The cell measurements assume water drying
** => these species (BETEX compounds) require CO2 scrubbing in addition to drying
SL => these species suffer "slight loses" if H2O drying is used.