This method is for the determination of aromatic and halogenated volatile organic compounds in nearly all types of aqueous matrices. Samples can be analyzed using direct injection (preparation Method 3585 for oily matrices) or purge and trap (preparation Methods 5030, 5035), headspace (preparation Method 5021), or vacuum distillation (preparation Method 5032). Preparation methods for ground water samples are Methods 5030, 5021 and 5032. Analysis is performed using a gas chromatograph (GC) with a photoionization detector (PID) and an electrolyitc conductivity detector (ECD) in series.
A single detector may be used when only the halogenated compounds (ECD) or aromatic compounds (PID) are being searched for. The use of the dual detectors is not required but is recommended for confirmation of the compound identities.
NOTE: This method replaces SW-846 Methods 8021 and 8021A.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | 14 days from collection to analysis |
| Preservatives: | Without residual chlorine: Cool to 4°C, adjust to pH < 2 with HCl. With residual chlorine: Preserve with Sodium thiosulfate solution (0.008%/L), cool to 4°C and adjust to pH < 2 with HCl. |
| Required Preps: | Two - 40mL VOA vials |
| Collection Method: | Grab sampling |
| Analytical Methodology: | GC/PID, GC/ECD |
| Documentation: | 
8021B
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Ethylbenzene | C8H10 |
100-41-4 |
1 |
µg/L |
| Styrene | C8H8 |
100-42-5 |
1 |
µg/L |
| Benzyl chloride | C7H7Cl |
100-44-7 |
1 |
µg/L |
| cis-1,3-Dichloropropene | C3H4Cl2 |
10061-01-5 |
1 |
µg/L |
| trans-1,3-Dichloropropene | C3H4Cl2 |
10061-02-6 |
1 |
µg/L |
| n-Propylbenzene | C9H12 |
103-65-1 |
1 |
µg/L |
| n-Butylbenzene | C10H14 |
104-51-8 |
1 |
µg/L |
| p-Xylene | C8H10 |
106-42-3 |
1 |
µg/L |
| 4-Chlorotoluene | C7H7Cl |
106-43-4 |
1 |
µg/L |
| 1,4-Dichlorobenzene | C6H4Cl2 |
106-46-7 |
1 |
µg/L |
| Epichlorohydrin | C3H5ClO |
106-89-8 |
1 |
µg/L |
| 1,2-Dibromoethane | C2H4Br2 |
106-93-4 |
1 |
µg/L |
| Allyl chloride | C3H5Cl |
107-05-1 |
1 |
µg/L |
| 1,2-Dichloroethane | C2H4Cl2 |
107-06-2 |
1 |
µg/L |
| 2-Chloroethanol | C2H5ClO |
107-07-3 |
1 |
µg/L |
| Chloromethyl Methyl Ether | C2H5ClO |
107-30-2 |
1 |
µg/L |
| m-Xylene | C8H10 |
108-38-3 |
1 |
µg/L |
| bis(2-Chloroisopropyl)ether | C6H12Cl2O |
108-60-1 |
1 |
µg/L |
| 1,3,5-Trimethylbenzene | C9H12 |
108-67-8 |
1 |
µg/L |
| Bromobenzene | C6H5Br |
108-86-1 |
1 |
µg/L |
| Toluene | C7H8 |
108-88-3 |
1 |
µg/L |
| Chlorobenzene | C6H5Cl |
108-90-7 |
1 |
µg/L |
| Ethyl Vinyl Ether | C4H7ClO |
110-75-8 |
1 |
µg/L |
| 1,2,4-Trichlorobenzene | C6H3Cl3 |
120-82-1 |
1 |
µg/L |
| Chlorodibromomethane | CHBr2Cl |
124-48-1 |
1 |
µg/L |
| Chloroprene | C4H5Cl |
126-99-8 |
1 |
µg/L |
| Tetrachloroethene | C2Cl4 |
127-18-4 |
1 |
µg/L |
| sec-Butylbenzene | C10H14 |
135-98-8 |
1 |
µg/L |
| 1,3-Dichloropropane | C3H6Cl2 |
142-28-9 |
1 |
µg/L |
| cis-1,2-Dichloroethene | C2H2Cl2 |
156-59-2 |
1 |
µg/L |
| trans-1,2-Dichloroethene | C2H2Cl2 |
156-60-5 |
1 |
µg/L |
| 1,3-Dichlorobenzene | C6H4Cl2 |
541-73-1 |
1 |
µg/L |
| Carbon tetrachloride | CCl4 |
56-23-5 |
1 |
µg/L |
| 1,1-Dichloropropene | C3H4Cl2 |
563-58-6 |
1 |
µg/L |
| 2,2-Dichloropropane | C3H6Cl2 |
594-20-7 |
1 |
µg/L |
| Bromoacetone | C3H5BrO |
598-31-2 |
1 |
µg/L |
| 1,1,1,2-Tetrachloroethane | C2H2Cl4 |
630-20-6 |
1 |
µg/L |
| Chloroform | CHCl3 |
67-66-3 |
1 |
µg/L |
| Benzene | C6H6 |
71-43-2 |
1 |
µg/L |
| 1,1,1-Trichloroethane | C2H3Cl3 |
71-55-6 |
1 |
µg/L |
| Bromomethane | CH3Br |
74-83-9 |
1 |
µg/L |
| Chloromethane (Methyl chloride) | CH3Cl |
74-87-3 |
1 |
µg/L |
| Dibromomethane | CH2Br2 |
74-95-3 |
1 |
µg/L |
| Bromochloromethane | CH2BrCl |
74-97-5 |
1 |
µg/L |
| Chloroethane | C2H5Cl |
75-00-3 |
1 |
µg/L |
| Vinyl chloride | C2H3Cl |
75-01-4 |
1 |
µg/L |
| Methylene chloride | CH2Cl2 |
75-09-2 |
1 |
µg/L |
| Bromoform | CHBr3 |
75-25-2 |
1 |
µg/L |
| Bromodichloromethane | CHBrCl2 |
75-27-4 |
1 |
µg/L |
| 1,1-Dichloroethane | C2H4Cl2 |
75-34-3 |
1 |
µg/L |
| 1,1-Dichloroethene | C2H2Cl2 |
75-35-4 |
1 |
µg/L |
| Trichlorofluoromethane | CCl3F |
75-69-4 |
1 |
µg/L |
| Dichlorodifluoromethane | CCl2F2 |
75-71-8 |
1 |
µg/L |
| 1,2-Dichloropropane | C3H6Cl2 |
78-87-5 |
1 |
µg/L |
| 1,1,2-Trichloroethane | C2H3Cl3 |
79-00-5 |
1 |
µg/L |
| Trichloroethene | C2HCl3 |
79-01-6 |
1 |
µg/L |
| 1,1,2,2-Tetrachloroethane | C2H2Cl4 |
79-34-5 |
1 |
µg/L |
| 1,2,3-Trichlorobenzene | C6H3Cl3 |
87-61-6 |
1 |
µg/L |
| Hexachlorobutadiene | C4Cl6 |
87-68-3 |
1 |
µg/L |
| Naphthalene | C10H8 |
91-20-3 |
1 |
µg/L |
| o-Xylene | C8H10 |
95-47-6 |
1 |
µg/L |
| 2-Chlorotoluene | C7H7Cl |
95-49-8 |
1 |
µg/L |
| 1,2-Dichlorobenzene | C6H4Cl2 |
95-50-1 |
1 |
µg/L |
| 1,2,4-Trimethylbenzene | C9H12 |
95-63-6 |
1 |
µg/L |
| 1,2-Dibromo-3-Chloropropane | C3H5Br2Cl |
96-12-8 |
1 |
µg/L |
| 1,2,3-Trichloropropane | C3H5Cl3 |
96-18-4 |
1 |
µg/L |
| 1,3-Dichloro-2-propanol | C3H6Cl2O |
96-23-1 |
1 |
µg/L |
| tert-Butylbenzene | C10H14 |
98-06-6 |
1 |
µg/L |
| Cumene (Isopropylbenzene) | C9H12 |
98-82-8 |
1 |
µg/L |
| Cymene (4-Isopropyltoluene) | C10H14 |
99-87-6 |
1 |
µg/L |
* 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.