Profile Differences of Trace Elements in Vegetables and Fruits Resulting from Various Digestion Procedures
Three pre-treatments of dry ashing, wet ashing and microwave digestion procedures in /lame atomic adsorption spectrometry (FAdS), were investigated to evaluate their effects on the concentrations of trace elements including Cu, Zn, Fe and Mn for edible plant samples. Microwave was proved to be a good digestion method in the present study due to shorter time, Setter recoveries and low relative standard deviations (RSDs). for the certified reference materials, RSDs were 6elow /0％ and the recovery values of Cu, Zn, Fe and Mn were from 96.63％ to 100.00％ when microwave digestion procedure was used for pre-treatment. Higher trace elements contents were detected when microwave digestion instead of the other digestion methods was chosen to pre-treat spinach or apple samples. The values of the addition recovery in the studied trace elements of Chinese chive or lettuce ranged from 97.00％ to 100.00％ due to the use of microwave digestion procedure. Therefore, the use of microwave digestion to pre-treat ediole plant samples improved the determination accuracy of trace elements in food nutrition assay and concentrations of Cu, Zn, Fe and Mn in investigated edi6le plants were acceptable to human consumption at nutritional and toxic levels.
trace elements F44S edible plants microwave digestion procedure
Sun Chang-xia Wei Dong-sheng Liu hai-xue Huang Liang Zhang Bo-Lin Wu Cheng-liang
Laboratory of Agricultural Analysis TianJin Agriculture University TianJin, P. R. China Division of Wood Biology Department of Wood Science Faculty of Mathematics, Informatics and Natural Department of Agronomy TianJin Agriculture University TianJin, P. R. China College of Biological Science and Biotechnology BeiJing Forestry University Beijing, P. R. China College of Economics and Management BeiJing Forestry University BeiJing, P. R. China
国际会议
山东淄博
英文
905-909
2011-05-27（万方平台首次上网日期，不代表论文的发表时间）