[Determination of trace mercury in the liquorice by cold atomic fluorometry]

By applying the nondispersive apparatus with reduction and gasification, and the wet dissolving method, the trace mercury in liquorice is determined by cold atomic fluorometry. We studied the conditions that can affect the determined results. We compared two methods for cleaning the glass ware, and contrasted the working curve method with addition plotting method. We also studied the applicability of this experimental method. The recovery is 86.9%-110.8%, and the error is less than 13.1%. It proves the method is efficient and satisfactory.