Capability
Statement
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 2.5 to 50 ng/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