BS EN ISO 17943:2016

Water quality. Determination of volatile organic compounds in water. Method using headspace solid-phase micro-extraction (HS-SPME) followed by gas chromatography-mass spectrometry (GC-MS)

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Standard number:	BS EN ISO 17943:2016
Pages:	54
Released:	2016-04-30
ISBN:	978 0 580 78728 7
Status:	Standard

DESCRIPTION

BS EN ISO 17943:2016

This standard BS EN ISO 17943:2016 Water quality. Determination of volatile organic compounds in water. Method using headspace solid-phase micro-extraction (HS-SPME) followed by gas chromatography-mass spectrometry (GC-MS) is classified in these ICS categories:

13.060.50 Examination of water for chemical substances

This International Standard specifies a method for the determination of volatile organic compounds (see Table 1). This comprises, for example, halogenated hydrocarbons, trihalogenated methanes, gasoline components (such as BTEX, MTBE, and ETBE), naphthalene, 2-ethyl-4-methyl-1,3-dioxolane, and highly odorous substances like geosmin and 2-methylisoborneol in drinking water, ground water, surface water, and treated waste water, by means of headspace solid-phase micro-extraction (HS-SPME) followed by gas chromatography-mass spectrometry (GC-MS). The limit of determination depends on the matrix, on the specific compound to be analysed, and on the sensitivity of the mass spectrometer. For most compounds to which this International Standard applies, it is at least 0,01 μg/l. Validation data related to a concentration range between 0,02 μg/l and 2,6 μg/l have been demonstrated in an interlaboratory trial. Additional validation data derived from standardization work show applicability of the method within a concentration range from 0,01 μg/l to 100 μg/l of individual substances. All determinations are performed on small sample amounts (e.g. sample volumes of 10 ml).

This method may be applicable to other compounds not explicitly covered by this International Standard or to other types of water. However, it is necessary to demonstrate the applicability for each case.

Table 1

Volatile organic compounds determinable by this method

Name	Molecular formula	CAS registry no. ^d	Molar mass g/mol	Density kg/l
tert-amyl methyl ether (TAME)	C₆H₁₄O	994–05–8	102,17	0,76
benzene	C₆H₆	71–43–2	78,12	0,88
bromobenzene	C₆H₅Br	108–86–1	157,01	1,50
bromochloromethane	CH₂BrCl	74–97–5	129,38	1,99
bromodichloromethane	CHBrCl₂	75–27–4	163,83	1,98
n-butylbenzene	C₁₀H₁₄	104–51–8	134,22	0,86
sec-butylbenzene	C₁₀H₁₄	135–98–8	134,22	0,86
tert-butylbenzene	C₁₀H₁₄	98–06–6	134,22	0,87
chlorobenzene	C₆H₅Cl	108–90–7	112,56	1,11
2-chlorotoluene	C₇H₇Cl	95–49–8	126,59	1,08
4-chlorotoluene	C₇H₇Cl	106–43–4	126,59	1,07
dibromochloromethane	CHBr₂Cl	124–48–1	208,34	2,45
1,2-dibromo-3-chloropropane (DBCP)	C₃H₅Br₂Cl	96–12–8	236,33	2,03
1,2-dibromoethane	C₂H₄Br₂	106–93–4	187,86	2,18
dibromomethane	CH₂Br₂	74–95–3	173,83	2,48
1,2-dichlorobenzene	C₆H₄Cl₂	95–50–1	147,00	1,30
1,3-dichlorobenzene	C₆H₄Cl₂	541–73–1	147,00	1,29
1,4-dichlorobenzene	C₆H₄Cl₂	106–46–7	147,00	1,25
1,1-dichloroethane	C₂H₄Cl₂	75–34–3	98,96	1,20
1,2-dichloroethane	C₂H₄Cl₂	107–06–2	98,96	1,25
1,1-dichloroethene	C₂H₂Cl₂	75–35–4	96,95	1,21
cis-1,2-dichloroethene	C₂H₂Cl₂	156–59–2	96,94	1,28
trans-1,2-dichloroethene	C₂H₂Cl₂	156–60–5	96,94	1,26
dichloromethane	CH₂Cl₂	75–09–2	84,93	1,33
1,2-dichloropropane	C₃H₆Cl₂	78–87–5	112,99	1,16
1,3-dichloropropane	C₃H₆Cl₂	142–28–9	112,99	1,19
2,2-dichloropropane ^c	C₃H₆Cl₂	594–20–7	112,99	1,08
1,1-dichloropropene	C₃H₄Cl₂	563–58–6	110,97	1,19
cis -1,3-dichloropropene ^c	C₃H₄Cl₂	10061–01–5	110,97	1,23
trans-1,3-dichloropropene ^c	C₃H₄Cl₂	10061–02–6	110,97	1,21
ethylbenzene	C₈H₁₀	100–41–4	106,17	0,86
ethyl tert-butyl ether (ETBE)	C₆H₁₄O	637–92–3	102,17	0,73
2-ethyl-4-methyl-1,3-dioxolane	C₆H₁₂O₂	4359–46–0	116,16	0,90
2-ethyl-5,5-dimethyl-1,3-dioxane	C₈H₁₆O₂	768–58–1	144,21	0,88
geosmin	C₁₂H₂₂O	16423–19–1	182,30	0,99
hexachlorobutadiene	C₄Cl₆	87–68–3	260,76	1,67
isopropylbenzene (cumene)	C₉H₁₂	98–82–8	120,19	0,86
4-isopropyltoluene (p-cymene)	C₁₀H₁₄	99–87–6	134,21	0,86
2-methylisoborneol	C₁₁H₂₀O	2371–42–8	168,28	0,97
methyl tert-butyl ether (MTBE)	C₅H₁₂O	1634–04–4	88,15	0,74
naphthalene	C₁₀H₈	91–20–3	128,17	1,14
n-propylbenzene	C₉H₁₂	103–65–1	120,19	0,86
styrene	C₈H₈	100–42–5	104,15	0,91
1,1,1,2-tetrachloroethane	C₂H₂Cl₄	630–20–6	167,85	1,55
1,1,2,2-tetrachloroethane	C₂H₂Cl₄	79–34–5	167,85	1,59
tetrachloroethene	C₂Cl₄	127–18–4	165,83	1,62
tetrachloromethane	CCl₄	56–23–5	153,82	1,59
toluene	C₇H₈	108–88–3	92,14	0,87
tribromomethane (bromoform)	CHBr₃	75–25–2	252,75	2,89
1,2,3-trichlorobenzene	C₆H₃Cl₃	87–61–6	181,45	1,68
1,2,4-trichlorobenzene	C₆H₃Cl₃	120–82–1	181,45	1,45
1,3,5-trichlorobenzene	C₆H₃Cl₃	108–70–3	181,45	1,87
1,1,1-trichloroethane	C₂H₃Cl₃	71–55–6	133,40	1,34
1,1,2-trichloroethane	C₂H₃Cl₃	79–00–5	133,40	1,44
trichloroethene	C₂HCl₃	79–01–6	131,39	1,46
trichloromethane (chloroform)	CHCl₃	67–66–3	119,38	1,47
1,2,3-trichloropropane	C₃H₅Cl₃	96–18–4	147,43	1,38
1,2,4-trimethylbenzene (pseudocumene)	C₉H₁₂	95–63–6	120,19	0,88
1,3,5-trimethylbenzene (mesitylene)	C₉H₁₂	108–67–8	120,19	0,86
vinyl chloride	C₂H₃Cl	75–01–4	62,5	1,88 ^b
m-xylene ^a	C₈H₁₀	108–38–3	106,17	0,86
o-xylene	C₈H₁₀	95–47–6	106,17	0,88
p-xylene ^a	C₈H₁₀	106–42–3	106,17	0,86

Signals of substances may overlap in chromatograms as they might co-elute.

Density of liquid at boiling point (−13,4 °C)

Refer to Tables F.1 and F.2 for validation data and additional information.

CAS: Chemical Abstracts Service.

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