Determination of Heavy Metals in Xinjiang Grapes by Microwave Digestion Inductively Coupled Plasma Mass Spectrometry and Health Risk Assessment
In this paper,a method of microwave digestion and inductively coupled plasma mass spectrometry was established for the determination of heavy metal content in grapes in Xinjiang,and the heavy metal content in grape skins and flesh was determined to evaluate the risk of ingestion of grapes to human health.The results showed that the optimal microwave digestion conditions were as follows:digestion time 30 min,digestion temperature 190℃,volume ratio of hydrogen peroxide to nitric acid 2∶8.The linear correlation coefficients were above 0.999,the relative standard deviations were 2.15%～4.67%,and the recoveries were 97.6%～103.1% .The health risk of heavy metals in table grapes was assessed using estimated daily intakes,which showed that 1 000 g of grapes per day was not harmful to consumer health.
inductively coupled plasma mass spectrometrygrapesheavy metalsmicrowave digestionhealth risks
万方数据
维普
