EN ISO 15680:2003

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Interferences
6 Reagents
7 Apparatus
8 Sample collection, preservation and preparation
9 Analytical procedure
10 Calibration
11 Calculation
12 Expression of results
13 Precision data
14 Test report
Annex A (informative) - Application of purge-and-trap
                        concentration to the GC analysis of
                        volatile compounds in water - Example 1:
                        Validation study in the UK
Annex B (informative) - Application of purge-and-trap concentration
                        to the GC-analysis of volatile compounds
                        in water - Example 2: Data provided by DIN
Annex C (informative) - Application of purge-and-trap
                        concentration to the GC-analysis of
                        volatile compounds in water - Example 3:
                        Validation study in the Netherlands
Annex D (normative) - Criteria for the GC-MS identification
                        of target compounds
Annex E (informative) - Procedures for the cleaning of
                        glassware and the preparation of
                        contaminant-free water
Annex F (informative) - Preparation of standard solutions of
                        volatile organic compounds
Annex G (informative) - Determination of the (absolute)
                        recovery of substances analysed by
                        purge-and-trap concentration
Bibliography

ISO 15680:2003 specifies a general method for the determination of volatile organic compounds (VOCs) in water by purge-and-trap isolation and gas chromatography (GC). Annexes A, B and C provide examples of analytes that can be determined using ISO 15680:2003. They range from difluorodichloromethane (R-12) up to trichlorobenzene, including all non-polar organic compounds of intermediate volatility.Detection is preferably carried out by mass spectrometry in the electron impact mode (EI), but other detectors may be applied as well.The limit of detection largely depends on the detector in use and the operational parameters. Typically detection limits as low as 10 ng/l can be achieved. The working range typically is up to 100 micrograms per litre.ISO 15680:2003 is applicable to drinking water, ground water, surface water, seawater and to (diluted) waste water.