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建立了用带八极杆碰撞/反应池的电感耦合等离子体质谱仪(ORS-ICP-MS)测定蜂蜜中Na、Mg、Al、K、Ca、Cr、Mn、Fe、Ni、Cu、Zn、As、Se、Mo、Cd、Ba、Hg、Pb等18种微量元素的方法。样品用HNO3+H2O2分解后,试液直接用ORS-ICP-MS法同时上述微量元素。采用八极杆碰撞/反应池技术,在池内引入惰性气体氦气或氢气,有效地消除了多原子离子对待测元素的干扰,确定了实验的最佳测定条件。结果表明,各元素的检出限在1.05～73.45ng/L之间,加标回收率在92.2%～106.8%之间,相对标准偏差(RSD)小于2.73%。
A method for the determination of Na, Mg, Al, K, Ca, Cr, Mn, Fe, Ni, Cu, Zn and Ca in honey by inductively coupled plasma mass spectrometer with octopole collision / As, Se, Mo, Cd, Ba, Hg, Pb and other 18 kinds of trace elements. Samples with HNO3 + H2O2 decomposition, the test solution directly ORS-ICP-MS simultaneous trace elements. Using octopole collision / reaction cell technology, introduction of inert gas helium or hydrogen in the cell effectively eliminated the interference of polyatomic ions on the elements to be tested, and determined the optimal experimental conditions. The results showed that the detection limit of each element ranged from 1.05 to 73.45ng / L, the recoveries of spiked samples ranged from 92.2% to 106.8%, and the relative standard deviations (RSDs) were less than 2.73%.