[Determination of nine trace elements in Dioscorea opposita thumb by flame atomic absorption spectrophotometry].
The contents of the potassium, calcium, sodium, magnesium, copper, zinc, iron, manganese, strontium and nickel in Dioscorea opposita thumb were determined. The relative standard deviation(RSD) of the first eight contents is 0.43%, 1.10%, 4.41%, 0.68%, 1.44%, 1.88%, 1.29% and 0.03% respectively, and the percentage recovery is 90.0%-111.0%. The method is convenient and accurate. It can be used to determine the trace elements simultaneousy in Dioscorea opposita thumb.
Zhang
Wei
W
Department of Chemistry, Resources Environment and GIS Key Lab of Beijing, Capital Normal University, Beijing 100037, China.
Zhang
Zhuo-Yong
ZY
Shi
Yan-Zhi
YZ
Fan
Guo-Qiang
GQ
D027742:Dioscorea / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000032:analysis*; D013054:Spectrophotometry, Atomic / Q000379:methods*; D014131:Trace Elements / Q000032:analysis*
D004365:Drugs, Chinese Herbal; D014131:Trace Elements