BS ISO 20595:2018
Water quality. Determination of selected highly volatile organic compounds in water. Method using gas chromatography and mass spectrometry by static headspace technique (HS-GC-MS)
| Standard number: | BS ISO 20595:2018 |
| Pages: | 34 |
| Released: | 2018-01-24 |
| ISBN: | 978 0 580 92472 9 |
| Status: | Standard |
BS ISO 20595:2018
This standard BS ISO 20595:2018 Water quality. Determination of selected highly volatile organic compounds in water. Method using gas chromatography and mass spectrometry by static headspace technique (HS-GC-MS) is classified in these ICS categories:
- 13.060.50 Examination of water for chemical substances
This document specifies a method for the determination of selected volatile organic compounds in water (see Table 1). This comprises among others volatile halogenated hydrocarbons as well as gasoline components (BTXE, TAME, MTBE and ETBE).
The method is applicable to the determination of volatile organic compounds (see Table 1) in drinking water, groundwater, surface water and treated waste water in mass concentrations >0,1 µg/l. The lower application range depends on the individual compound, the amount of the blank value and the matrix.
The applicability of the method to further volatile organic compounds not indicated in Table 1 is not excluded, but this is checked in individual cases.
Table 1
Volatile organic compounds determinable by this method
| Name (other name) | Molecular formula | CAS-RNa | EC-Numberb | Molar mass |
|---|---|---|---|---|
| g/mol | ||||
| allyl chloridec (3-chloropropene) | C3H5Cl | 107-05-1 | 203-457-6 | 76,53 |
| benzene | C6H6 | 71-43-2 | 200-753-7 | 78,11 |
| biphenyl | C12H10 | 92-52-4 | 202-163-5 | 154,21 |
| bromodichloromethane | CHBrCl2 | 75-27-4 | 200-856-7 | 163,83 |
| chlorobenzene | C6H5Cl | 108-90-7 | 203-628-5 | 112,56 |
| 2-chloro-1,3-butadiene (chloroprene) | C4H5Cl | 126-99-8 | 204-818-0 | 88,54 |
| 2-chlorotoluene | C7H7Cl | 95-49-8 | 202-424-3 | 126,58 |
| 3-chlorotoluene | C7H7Cl | 108-41-8 | 203-580-5 | 126,58 |
| 4-chlorotoluene | C7H7Cl | 106-43-4 | 203-397-0 | 126,58 |
| dibromochloromethane | CHBr2Cl | 124-48-1 | 204-704-0 | 208,28 |
| 1,2-dibromoethane | C2H4Br2 | 106-93-4 | 203-444-5 | 187,86 |
| 1,2-dichlorobenzene | C6H4Cl2 | 95-50-1 | 202-425-9 | 147,00 |
| 1,3-dichlorobenzene | C6H4Cl2 | 541-73-1 | 208-792-1 | 147,00 |
| 1,4-dichlorobenzene | C6H4Cl2 | 106-46-7 | 203-400-5 | 147,00 |
| dichlorodiisopropyl ether | C6H12Cl2O | 108-60-1 | 203-598-3 | 171,06 |
| 1,1-dichloroethane | C2H4Cl2 | 75-34-3 | 200-863-5 | 98,96 |
| 1,2-dichloroethane | C2H4Cl2 | 107-06-2 | 203-458-1 | 98,96 |
| 1,1-dichloroethene | C2H2Cl2 | 75-35-4 | 200-864-0 | 96,94 |
| cis-1,2-dichloroethene | C2H2Cl2 | 156-59-2 | 205-859-7 | 96,94 |
| trans-1,2-dichloroethene | C2H2Cl2 | 156-60-5 | 205-860-2 | 96,94 |
| dichloromethane | CH2Cl2 | 75-09-2 | 200-838-9 | 84,93 |
| 1,2-dichloropropane | C3H6Cl2 | 78-87-5 | 201-152-2 | 112,99 |
| cis-1,3-dichloropropene | C3H4Cl2 | 10061-01-5 | 233-195-8 | 110,97 |
| trans-1,3-dichloropropene | C3H4Cl2 | 10061-02-6 | 602-030-00-5e | 110,97 |
| 2,3-dichloropropene | C3H4Cl2 | 78-88-6 | 201-153-8 | 110,97 |
| 1,1-dimethylpropyl-methyl ether, tert-amyl methyl ether (TAME) | C6H14O | 994-05-8 | 213-611-4 | 102,17 |
| ethyl benzene | C8H10 | 100-41-4 | 202-849-4 | 106,17 |
| ethyl tert-butyl ether (ETBE) | C6H14O | 637-92-3 | 211-309-7 | 102,17 |
| hexachlorobutadiene | C4Cl6 | 87-68-3 | 201-765-5 | 260,76 |
| hexachloroethane | C2Cl6 | 67-72-1 | 200-666-4 | 236,74 |
| isopropylbenzene (cumene) | C9H12 | 98-82-8 | 202-704-5 | 120,19 |
| methyl tert-butyl ether (MTBE) | C5H12O | 1634-04-4 | 216-653-1 | 88,15 |
| naphthalene | C10H8 | 91-20-3 | 202-049-5 | 128,17 |
| n-propylbenzene | C9H12 | 103-65-1 | 203-132-9 | 120,19 |
| 1,1,1,2-tetrachloroethane | C2H2Cl4 | 630-20-6 | 211-135-1 | 167,85 |
| tetrachloroethene | C2Cl4 | 127-18-4 | 204-825-9 | 165,84 |
| tetrachloromethane (carbon tetrachloride) | CCl4 | 56-23-5 | 200-262-8 | 153,82 |
| toluene | C7H8 | 108-88-3 | 203-625-9 | 92,14 |
| tribromomethane (bromoform) | CHBr3 | 75-25-2 | 200-854-6 | 252,73 |
| 1,2,3-trichlorobenzene | C6H3Cl3 | 87-61-6 | 201-757-1 | 181,45 |
| 1,2,4-trichlorobenzene | C6H3Cl3 | 120-82-1 | 204-428-0 | 181,45 |
| 1,3,5-trichlorobenzene | C6H3Cl3 | 108-70-3 | 203-608-6 | 181,45 |
| 1,1,1-trichloroethane | C2H3Cl3 | 71-55-6 | 200-756-3 | 133,40 |
| 1,1,2-trichloroethane | C2H3Cl3 | 79-00-5 | 201-166-9 | 133,40 |
| trichloroethene | C2HCl3 | 79-01-6 | 201-167-4 | 131,39 |
| trichloromethane (chloroform) | CHCl3 | 67-66-3 | 200-663-8 | 119,38 |
| 1,1,2-trichlorotrifluoroethane | C2Cl3F3 | 76-13-1 | 200-936-1 | 187,38 |
| 1,2,4-trimethylbenzene (pseudocumene) | C9H12 | 95-63-6 | 202-436-9 | 120,19 |
| 1,3,5-trimethylbenzene (mesitylene) | C9H12 | 108-67-8 | 203-604-4 | 120,19 |
| vinyl benzene (styrene) | C8H8 | 100-42-5 | 202-851-5 | 104,15 |
| vinyl chloride (chloroethene)c | C2H3Cl | 75-01-4 | 200-831-0 | 62,49 |
| o-xylene | C8H10 | 95-47-6 | 202-422-2 | 106,17 |
| m-xylened | C8H10 | 108-38-3 | 203-576-3 | 106,17 |
| p-xylened | C8H10 | 106-42-3 | 203-396-5 | 106,17 |
a CAS-RN: Chemical Abstracts Service Registry Number.
b EC-Number: European Inventory of Existing Commercial Substances (EINECS) or European List of Notified Chemical Substances (ELINCS).
c Compounds do not have long-term stability.
d Compounds can coelute.
e Source: Hazardous Substance Data Base University Hamburg (Germany).