METHOD FOR EXTRACTING HEXAVALENT CHROMIUM FROM PLASTIC

摘要

Disclosed is a method for extracting hexavalent chromium from plastic, which comprises the following steps: mixing plastic and extracting solution to obtain a mixture, continuously blending at a temperature of 80~ 160°C in a sealed environment, recovering inorganic phase after static stratification, and obtaining clear solution of inorganic layer containing hexavalent chromium after centrifugal stratifying the inorganic phase. Said extracting solution is the mixture of organic solvent and alkaline solution. The method is of help to accurately inspect hexavalent chromium in plastic.