title: [Comparative studies on five pretreatment methods in the determination of elements in plant standard sample by ICP-AES].
abstract: Direct determination of the contents of 19 major or trace elements: K, Na, Ca, Mg, Si, Al, Fe, P, Sr, Ti, Mn, Zn, Pb, B, Ba, Cu, Li, V and Ni in plant samples by ICP-AES are reported in this paper. The solution of plant standard sample GBW07603 was prepared by five pretreatment methods: dry-ashing, HNO3 + H2SO4 + HClO4, H2SO4 + H2O, HNO3 + H2SO4 + HClO4 + HF and ashing + NaOH method. Suitable pretreatment methods were found for the determination of the elements by comparing standard deviations and relative errors of the results, thus providing a scientific basis for the selection of suitable pretreatment of chemical element analysis in plants.
authors.affiliation: Analyzing and Testing Centre, Zhejiang University, 310028 Hangzhou.
authors.forename: J
authors.initials: J
authors.lastname: Wu
authors.forename: Y
authors.initials: Y
authors.lastname: Ge
mesh_terms: D002623:Chemistry Techniques, Analytical / Q000379:methods*; D010944:Plants / Q000737:chemistry*; D013054:Spectrophotometry, Atomic; D014131:Trace Elements / Q000032:analysis*
chemical_list: D014131:Trace Elements