Background Value Comparation of Domestic and Imported Microwave Digestion Tank

Objectives To explore whether the quality of domestic microwave digestion tank could meet the requirements for environmental monitoring.

Methods Using inductively coupled plasma-mass spectrometer to measure the background value of domestic microwave digestion tank handled by different pretreatments, and then comparing the measured background values of domestic microwave digestion tank with those of imported digestion tank.

Results The background values of domestic digestion tank treated by traditional cleaning method were significantly higher than the background values of imported quartz digestion tank (P<0.01) except for the element Se. After domestic digestion tank being treated by microwave digestion, there was no significant difference between the background values of imported quartz digestion tank and the domestic microwave digestion tank (P>0.05).

Conclusions Using the method described in this experiment, the quality of domestic microwave digestion tank could meet the requirements for environmental monitoring. The lower cost for domestic microwave digestion tank makes the microwave digestion technique practicable for testing batch samples in environmental monitoring.