Method 7

Organic Vapors


This method is for the collection and analysis of organic vapors.  The organic vapors validate for the method are listed in the table below.  The sample is collected on a coconut shell charcoal tube.  After collection, the sample is desorbed with an organic solvent.  Carbon disulfide is the most common desorption solvent but other solvents can be used if it's more appropriate for the target analyte.  The samples are analyzed using GC/FID (flame ionization detector). The adsorptive capacity of the collection tube is decreased by high humidity. Certain analytes require the use of a petroleum base charcoal instead of coconut base charcoal.


(OSHA)

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Method Data

Hold Times, Preservatives, Preps, Collection, Analytical & Documentation
Holding Time:   None specified in the method.
Preservatives:   None specified in the method.
Required Preps:   Coconut shell charcoal tube, 50/100mg (SKC 226-01)
Collection Method:   The method recommends a 0.05 - 0.2 L/min. and a 1 - 50L sample collection volume.
Analytical Methodology:   GC/FID
Documentation:   07

Analyte List*

Analyte Formula CAS Number Detection Limit
Benzyl chloride
C7H7Cl
100-44-7
3
 µg
sec-Butyl acetate
C6H12O2
105-46-4
3
 µg
3-Heptanone
C7H14O
106-35-4
3
 µg
1,4-Dichlorobenzene
C6H4Cl2
106-46-7
3
 µg
Epichlorohydrin
C3H5ClO
106-89-8
3
 µg
Allyl chloride
C3H5Cl
107-05-1
3
 µg
2-Chloroethanol
C2H5ClO
107-07-3
3
 µg
Allyl alcohol
C3H6O
107-18-6
3
 µg
2-Pentanone
C5H10O
107-87-9
3
 µg
Methyl isobutyl carbinol
C6H14O
108-11-2
3
 µg
Diisopropyl ether
C6H14O
108-20-3
3
 µg
Isopropyl acetate
C5H10O2
108-21-4
3
 µg
Diisobutyl ketone
C9H18O
108-83-8
3
 µg
Methyl isoamyl acetate
C8H16O2
108-84-9
3
 µg
Methylcyclohexane
C7H14
108-87-2
3
 µg
Chlorobenzene
C6H5Cl
108-90-7
3
 µg
Cyclohexanol
C6H12O
108-93-0
3
 µg
n-Propyl acetate
C5H10O2
109-60-4
3
 µg
Pentane
C5H12
109-66-0
3
 µg
Methylal
C3H8O2
109-87-5
3
 µg
Ethyl formate
C3H6O2
109-94-4
3
 µg
Tetrahydrofuran
C4H8O
109-99-9
3
 µg
Isobutyl acetate
C6H12O2
110-19-0
3
 µg
2-Heptanone
C7H14O
110-43-0
3
 µg
Hexane
C6H14
110-54-3
3
 µg
Cyclohexane
C6H12
110-82-7
3
 µg
Cyclohexene
C6H10
110-83-8
3
 µg
bis(2-Chloroethyl)ether
C4H8Cl2O
111-44-4
3
 µg
Octane
C8H18
111-65-9
3
 µg
Phenyl glycidyl ether
C9H10O2
122-60-1
3
 µg
Diacetone alcohol
C6H12O2
123-42-2
3
 µg
Isoamyl alcohol
C5H12O
123-51-3
3
 µg
Butyl acetate
C6H12O2
123-86-4
3
 µg
1,4-Dioxane
C4H8O2
123-91-1
3
 µg
Isoamyl acetate
C7H14O2
123-92-2
3
 µg
Ethyl acetate
C4H8O2
141-78-6
3
 µg
Methyl isobutenyl ketone
C6H10O
141-79-7
3
 µg
Heptane
C7H16
142-82-5
3
 µg
n-Butyl glycidyl ether (BGE)
C7H14O2
2426-08-6
3
 µg
Methylstyrene (Vinyl toluene)
C9H10
25013-15-4
3
 µg
Tetramethyl succinonitrile
C8H12N2
3333-52-6
3
 µg
Isopropyl Glycidyl Ether
C6H12O2
4016-14-2
3
 µg
1,2-Dichloroethene
C2H2Cl2
540-59-0
3
 µg
tert-Butyl acetate
C6H12O2
540-88-5
3
 µg
Ethyl sec-amyl ketone
C8H16O
541-85-5
3
 µg
Glycidol
C3H6O2
556-52-5
3
 µg
Carbon tetrachloride
CCl4
56-23-5
3
 µg
Methyl butyl ketone (2-Hexanone)
C6H12O
591-78-6
3
 µg
1,1-Dichloro-1-nitroethane
C2H3Cl2NO2
594-72-9
3
 µg
Ethyl ether
C4H10O
60-29-7
3
 µg
sec-Amyl Acetate
C7H14O2
626-38-0
3
 µg
n-Propyl nitrate
C3H7NO3
627-13-4
3
 µg
n-Amyl acetate
C7H14O2
628-63-7
3
 µg
Hexachloroethane
C2Cl6
67-72-1
3
 µg
n-Propanol
C3H8O
71-23-8
3
 µg
n-Butanol
C4H10O
71-36-3
3
 µg
Ethyl bromide
C2H5Br
74-96-4
3
 µg
Bromochloromethane
CH2BrCl
74-97-5
3
 µg
Bromoform
CHBr3
75-25-2
3
 µg
1,1-Dichloroethane
C2H4Cl2
75-34-3
3
 µg
Difluorodibromomethane
CBr2F2
75-61-6
3
 µg
tert-Butyl alcohol
C4H10O
75-65-0
3
 µg
1,1,2,2 Tetrachloro-2,2-difluoroethane
C2Cl4F2
76-11-9
3
 µg
1,1,2,2-Tetrachloro-1,2-difluoroethane
C2Cl4F2
76-12-0
3
 µg
Camphor
C10H16O
76-22-2
3
 µg
Isophorone
C9H14O
78-59-1
3
 µg
Isobutyl alcohol
C4H10O
78-83-1
3
 µg
1,2-Dichloropropane
C3H6Cl2
78-87-5
3
 µg
2-Butanol
C4H10O
78-92-2
3
 µg
Methyl acetate
C3H6O2
79-20-9
3
 µg
1,1,2,2-Tetrachloroethane
C2H2Cl4
79-34-5
3
 µg
1,2-Dichlorobenzene
C6H4Cl2
95-50-1
3
 µg
1,2,3-Trichloropropane
C3H5Cl3
96-18-4
3
 µg
p-tert-Butyltoluene
C11H16
98-51-1
3
 µg
Cumene (Isopropylbenzene)
C9H12
98-82-8
3
 µg

* The analytes and detection limits listed for each method represent the typical detection limits and analytes reported for that particular method. Keep in mind that analyte lists may vary from laboratory to laboratory. Detection limits may also vary from lab to lab and are dependent upon the sample size, matrix, and any interferences that may be present in the sample.