Highly volatile halogenated hydrocarbons
According to the LAWA definition, highly volatile halogenated hydrocarbons ( LHKW for short ) are all halogenated C1 and C2 hydrocarbons , including trihalomethanes . These include, for example, chloroform , perchlorethylene or vinyl chloride (basic material for PVC production). LHKW form a component in many commercial products and chemical preparations as well as in solvents and extractants . LHKW can be divided into different subgroups, with the LCKW being the most important.
It should be noted that LHKW damage the ozone layer and some are also carcinogenic (such as vinyl chloride ). Due to their chemical hazard potential, they are a parameter to be determined in soil , air and water analyzes. Because of the high volatility , i. H. high vapor pressure , the samples must be stored as cool as possible and should be examined in the laboratory as soon as possible. The analysis takes place in the gas chromatograph .
Individual evidence
- ^ Horst-Robert Langguth, Rudolf Voigt; Hydrogeological Methods, p. 483ff, Chapter: Excursion through LHKW ; ISBN 978-3540211266
- ^ Benedikt Toussaint, Gert Rehner, Thomas Held; Remediation of groundwater damage, p. 15; ISBN 978-3816916079