This method is for the sampling and analysis of HAPs (hazardous air pollutants) from stationary source emissions at wood products facilities. The group of organic compounds in the method are listed in the table below. The samples are analyzed using a colormetric method, GC/FID, and GC/MS.
The sampling train consists of a heated sample probe, a heated filter box containing aTelfon filter, three midget impingers and a canister. The sample is drawn through the impingers at a constant flow. 25mls of deionized water spiked with an intermediate internal standard are added to the three impingers. The first impinger can remain empty to serve as a moisture knock-out if the source is expected to have moisture >40%. A second Teflon filter can be added after the impingers to remove any fiber or debris from entering the critical orifice. The canister is placed after the impingers in the sampling train.
The method is not applicable for any source that has a moisture content greater than 60% (by volume).
After sampling, the impinger water contents are transferred to one bottle. Mark the liquid level on the bottle.
There are four analyses performed for each sample. Formaldehyde is analyzed from the water impinger using a colorimetric technique. Water soluble compounds are analyzed by GC/FID (flame ionization detctor) from the water impingers. Two aliquots of sample are taken from the canister and analyzed by GC/MS and by GC/FID for terpenes.
The method also requires an aqueous field spike, a canister field spike, and a duplicate sample run.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | The impinger catch is stable for 14 days from sample collection if kept refrigerated. The canister sample is stable for 3 weeks. |
| Preservatives: | Store and ship aqueous impinger samples at 4°C. |
| Required Preps: | 100mL Glass or polyethylene bottle with Teflon-lined lid, 6L Summa canister |
| Collection Method: | Midget impinger and Summa canister |
| Analytical Methodology: | GC/FID, Colorimetric, GC/MS |
| Documentation: | 
IM/CAN/WP-99.02
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Styrene | C8H8 |
100-42-5 |
50 |
ppbv |
| p-Xylene | C8H10 |
106-42-3 |
50 |
ppbv |
| Acrolein | C3H4O |
107-02-8 |
50 |
ppbv |
| 1,2-Dichloroethane | C2H4Cl2 |
107-06-2 |
50 |
ppbv |
| Methyl isobutyl ketone (MIBK) | C6H12O |
108-10-1 |
50 |
ppbv |
| m-Xylene | C8H10 |
108-38-3 |
50 |
ppbv |
| Toluene | C7H8 |
108-88-3 |
50 |
ppbv |
| Phenol | C6H6O |
108-95-2 |
50 |
ppbv |
| 1,2,4-Trichlorobenzene | C6H3Cl3 |
120-82-1 |
50 |
ppbv |
| Propionaldehyde (Propanal) | C3H6O |
123-38-6 |
50 |
ppbv |
| beta-Pinene | C10H16 |
127-91-3 |
50 |
ppbv |
| cis-1,2-Dichloroethene | C2H2Cl2 |
156-59-2 |
50 |
ppbv |
| Formaldehyde | CH2O |
50-00-0 |
50 |
ppbv |
| D-Limonene | C10H16 |
5989-27-5 |
50 |
ppbv |
| Methanol | CH4O |
67-56-1 |
50 |
ppbv |
| Acetone | C3H6O |
67-64-1 |
50 |
ppbv |
| Benzene | C6H6 |
71-43-2 |
50 |
ppbv |
| Bromomethane | CH3Br |
74-83-9 |
50 |
ppbv |
| Chloroethane | C2H5Cl |
75-00-3 |
50 |
ppbv |
| Vinyl chloride | C2H3Cl |
75-01-4 |
50 |
ppbv |
| Acetaldehyde | C2H4O |
75-07-0 |
50 |
ppbv |
| Methylene chloride | CH2Cl2 |
75-09-2 |
50 |
ppbv |
| Methyl ethyl ketone (2-Butanone) | C4H8O |
78-93-3 |
50 |
ppbv |
| Camphene | C10H16 |
79-92-5 |
50 |
ppbv |
| alpha-Pinene | C10H16 |
80-56-8 |
50 |
ppbv |
| o-Xylene | C8H10 |
95-47-6 |
50 |
ppbv |
| Cumene (Isopropylbenzene) | C9H12 |
98-82-8 |
50 |
ppbv |
| alpha-Phellandrene | C10H16 |
99-83-2 |
50 |
ppbv |
| Cymene (4-Isopropyltoluene) | C10H14 |
99-87-6 |
50 |
ppbv |
* 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.