期刊
COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS
卷 41, 期 3, 页码 231-243出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/00103620903460757
关键词
Inductively coupled plasma-atomic mass spectrometry; internal standardization; major elements; matrix interference; plant sample analysis; trace elements
资金
- Regional Council of Aquitaine [20040309007A]
The determination of several trace elements [arsenic (As), cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), molybdenum (Mo), nickel (Ni), and lead (Pb)] in plant samples using inductively coupled plasma-mass spectrometry (ICP-MS) was evaluated. It was established experimentally that moderate amounts (0.2-2%) of dissolved solids decreased the analyte signals significantly. Internal standardization with Rh was efficiently used to compensate for these matrix effects. The accuracy of the method was verified using reference materials digested according to two different procedures: dry ashing and microwave digestion. No significant differences were observed between measured concentrations and certified values. The investigation was next extended for the determination of major elements [aluminum (Al), boron (B), calcium (Ca), iron (Fe), potassium (K), magnesium (Mg), manganese (Mn), sodium (Na), phosphorus (P), and zinc (Zn)] on the same reference materials. The ICP-MS values agree well with the values supplied. However, it appeared that Sc was the most useful internal standard for major elements.
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