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KAR Laboratories

CHLORINATED PARAFFINS

Chlorinated paraffins (CPs) are a group of industrial chemicals used primarily as flame retardants and plasticizers. They are added to certain metalworking fluids, paints, coatings, and sealants to improve their heat-resistance or other physical properties. Because of their high degree of chlorination, CPs tend to be persistent in the environment and toxic to aquatic organisms. The International Agency for Research on Cancer has classified CPs in Group 2B as possibly carcinogenic to humans.

KAR has developed its own unique analytical method for chlorinated paraffins which is based upon an existing U.S. EPA method from the Solid Waste manual.  The aqueous sample is pH adjusted, serially solvent extracted with solvent, then concentrated.  The GC/MS measurement system is calibrated at three concentrations on three separate chlorinated paraffin standards: C10-C13, C14-C17, and C17-C30.  The extract is then analyzed and the concentration determined from the appropriate calibration curve(s), depending on the range of compounds detected. The reporting limit for a 1liter sample is 1 ppm.

 

 

KAR Laboratories, Inc.


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