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Volatile Organic Compounds in Air (Tenax Tube)

Volatile Organic Compounds (VOCs) in Air (Tenax Tube)

Technique:
GC/MS


Reference method:
Derived from USEPA Methods and TO-1 Volatile Organics. Compounds in Ambient Air using Tenax Adsorption and GC-MS, TO-17 Volatile Organic Compounds in Ambient Air Using Active Sampling Onto Sorbent Tubes and 624 and 8260 (CLP modified). The Chemex method described herein does not record in every detail with any single published method.


Compounds:

624 List 

8260 List

Acetone

Benzene

Bromodichloromethane

Bromoform

Bromomethane

Butanone (MEK)

Carbon Disulphide

Carbon Tetrachloride

Chlorobenzene

Chloroethane

Chloroform

Chloromethane

cis-1,2-Dichloroethene

cis-1,3-Dichloropropene

Dibromochloromethane

1,1-Dichloroethane

1,2-Dichloroethane

1,1-Dichloroethene

1,2-Dichloropropane

Ethyl benzene

Freon 113

2-Hexanone (MBK)

Methylene Chloride

4-methyl-2-pentanone (MIBK)

Styrene

1,1,2,2-Tetrachloroethane

Tetrachloroethene

Tertiary butyl methyl ether (TBME)

1,1,1-Trichloroethane

1,1,2-Trichloroethane

Toluene

trans-1,2-Dichloroethene

trans-1,Dichloropropene

Trichloroethene

Vinyl acetate

Vinyl chloride

Xylene (ortho)

Xylene (total meta and para)

 

Acetone

Allyl chloride

Benzene

Bromobenzene

Bromodichloromethane

Bromoform

Bromomethane

2-Butanone (MEK)

n-Butylbenzene

s-Butylbenzene

t-Butylbenzene

Carbon disulphide

Carbon tetrachloride

Chlorobenzene

1-Chlorobutane

Chloroethane

Chloroform

Chloromethane

2-Chlorotoluene

4-Chlorotoluene

Dibromochloromethane

1,2-Dibromoethane

1,2-Dibromo-3-chloropropane

Dibromomethane

1,2-Dichlorobenzene

1,3-Dichlorobenzene

1,4-Dichlorobenzene

trans-1,4-Dichloro-2-butene

Dichlordifluoromethane

1,1-Dichloroethane

1,2-Dichloroethane

1,1-Dichloroethene

2,2-Dichloropropane

cis-1,2-Dichloroethene

trans-1,2-Dichlorethene

1,2-Dichloropropane

1,3-Dichloropropane

1,1-Dichloropropene

cis-1,3-Dichloropropene

trans-1,3-Dichloropropene

Diethyl ether

Ethyl benzene

Ethyl methacrylate

Hexachlorobutadiene

Hexachloroethane

2-Hexanone (MBK)

Methylene Chloride

Methyl methacrylate

4-Methyl-2-pentanone (MIBK)

Naphthalene

2-Nitropropane

Pentachloroethane

i-Propylbenzene

n-Propylbenzene

4-i-Propyltoluene

Styrene

Tertiary butyl methyl ether (TBME)

1,1,1,2-Tetrachloroethane

1,1,2,2-Tetrachloroethane

Tetrachloroethene

Tetrahydrofuran

Toluene

1,2,3-Trichlorobenzene

1,2,4-Trichlorobenzene

1,1,1-Trichloroethane

1,1,2-Trichloroethane

Trichloroethene

Trichlorofluoromethane

1,2,3-Trichloropropane

1,2,4-Trimethylbenzene

1,3,5-Trimethylbenzene

Vinyl chloride

Xylene (ortho)

Xylene (total meta and para)


Limit of Detection:
From 4.0 to 100ng/tube


Sample required:       
Since all the volatile compounds trapped in the Tenax tube will be transferred to the GC/MS, the appropriate volume of air sample pumped through the Tenax tube depends on the estimated concentration of individual target compounds per litre of air.  Where it is possible to make such estimates it should be noted that concentrations in the tube should not exceed 1.0mg.

It is advisable to prepare several Tenax Tubes per sample point using varied pumped air sample volumes.  Volumes should be clearly indicated on the tube or associated documentation.

Notes:
1.    MDLs may be affected by sample matrix interferences, dilutions
2.    The list of determinands may vary: call to confirm