Wu J, Ge Y
Analyzing and Testing Centre, Zhejiang University, 310028 Hangzhou.
Guang Pu Xue Yu Guang Pu Fen Xi. 1999 Jun;19(3):369-72.
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.
本文报道了采用电感耦合等离子体发射光谱法（ICP - AES）直接测定植物样品中19种主要或微量元素：钾（K）、钠（Na）、钙（Ca）、镁（Mg）、硅（Si）、铝（Al）、铁（Fe）、磷（P）、锶（Sr）、钛（Ti）、锰（Mn）、锌（Zn）、铅（Pb）、硼（B）、钡（Ba）、铜（Cu）、锂（Li）、钒（V）和镍（Ni）的含量。采用干灰化法、硝酸（HNO₃）+硫酸（H₂SO₄）+高氯酸（HClO₄）法、硫酸（H₂SO₄）+水法、硝酸（HNO₃）+硫酸（H₂SO₄）+高氯酸（HClO₄）+氢氟酸（HF）法和灰化+氢氧化钠（NaOH）法等五种预处理方法制备植物标准样品GBW07603的溶液。通过比较结果的标准偏差和相对误差，找到了适合测定这些元素的预处理方法，从而为植物中化学元素分析选择合适的预处理方法提供了科学依据。
