[Identification of organic solvents in the water of a freshly coated drinking-water reservoir].
Chloro-caoutschouc coatings on reservoirs made of concrete can release organic solvents to the drinking water for several month after applying. These solvents can be identified directly in the water by highly sensitive analytical methods (GC/MS). The concentrations verified distinctly exceed the maximum permissible concentration of 10 micrograms/l as suggested by the EEG for the parameter: "dissolved or emulsified hydrocarbons (after extraction by petroleum ether); mineral oils" (2). Protective chloro-caoutchouc coatings should therefore be tested for the release of organic substances to water according to the KTW-Recommendations of the German Federal Health Bureau (1). In future drinking water reservoirs should not be coated unless compelling reasons exist, such as to protect concrete against aggressive water.
D006838:Hydrocarbons / Q000032:analysis*; D008452:Maximum Allowable Concentration; D012997:Solvents / Q000032:analysis*; D014881:Water Supply / Q000032:analysis*
D006838:Hydrocarbons; D012997:Solvents
Nachweis organischer Lösungsmittel im Wasser eines frischgestrichenen Trinkwasserbehälters.