BS EN ISO 10301:1997

This standard BS EN ISO 10301:1997 Water quality. Determination of highly volatile halogenated hydrocarbons. Gas-chromatographic methods is classified in these ICS categories:

• 13.060.50 Examination of water for chemical substances

This International Standard specifies two methods for the determination of highly volatile halogenated hydrocarbons using gas chromatography.

Section 2 specifies a method for the determination by liquid/liquid extraction of highly volatile halogenated hydrocarbons in drinking water, ground water, swimming pool water, most rivers and lakes and many sewage and industrial effluents. Typical values of "quantification limits" are given in table 1.

Table 1

Typical values of "quantification limits" for some highly volatile halogenated hydrocarbons using liquid/liquid extraction

Compound	Quantification limits μ9/l
Dichloromethane	50
Chloroform	0,05 - 0,3
Carbon tetrachloride	o 0 1 p
1,1-Dichloroethane	1,0-5
1,2-Dichloroethane	5-10
1,1,1-Trichloroethane	0,02 - 0,1
1,1,2,2-T etrachloroethane	0,05 - 0,1
Hexachloroethane	0,01 - 0,05
cis-1,2-Dichloroethylene	5-50
trans,2-Dichloroethylene	1 - 10
Trichloroethylene	0,05-0,1
Tetrachloroethylene	0,1
Hexachlorobutadiene	0,01
Tribromomethane	0,1
1,1,2-Trichlorotrifluoroethane	0,1

Section 3 specifies a method for the determination of highly volatile halogenated hydrocarbons in drinking water, surface waters and ground water by a static headspace method. Typical values of "quantification limits" are given in table 2.

In practise, the head-space method is applicable for industrial effluents as a screening method, but in some cases it is necessary to confirm the result by the liquid-liquid extraction method.

NOTE: When applying this International Standard, the guide on analytical quality control for water analysis (see ISO/TR 13530) should be followed, especially for the calibration steps.

Table 2

Typical values of "quantification limits" for some highly volatile halogenated hydrocarbons using static head-space method

Compound	Quantification limits μ9/I
Dichloromethane	50
Chloroform	0,3
Carbon tetrachloride	0,1
1,1-Dichloroethane	100
1,2-Dichloroethane	100
1,1,1-Trichloroethane	0,1
1,1,2-Trichloroethane	20
1,1-Dichloroethylene	10
cis-1,2-Dichloroethylene	50
trans-1 ,2-Dichloroethylene	25
Trichloroethylene	0,2
Tetrachloroethylene	0,2
1,2-Dichloropropane	50
1,3-Dichloropropane	200
cis+ trans-1,3-Dichloropropylene	10
Dibromomethane	0,3
Tribromomethane (Bromoform)	5
1,2-Dibromoethane	2
Bromochloromethane	1
Bromodichloromethane	0,2
Dibromochloromethane	0,3
1,1,3-Trifluoroethane	1