CAJ | 학술논문

目的：建立碰撞反应池—电感耦合等离子体质谱法(inductively coupled plasma-mass spectrometry， ICP-MS)测定海藻食品中铬、镍、铜、砷、镉、汞、铅等重金属元素的分析检测方法。方法样品经微波消解后用电感耦合等离子体质谱仪直接进行分析,采用内标元素72Ge、115In和209Bi消除基体干扰和信号漂移,碰撞反应池技术(ORS)消除质谱干扰。结果各元素校正曲线的相关系数均大于0.9992,方法的检出限0.003μg/L~0.028μg/L,相对标准偏差小于4.92%,加标回收率为85.6%~106.2%,标准参考物质的测定结果与标准值相符。结论该方法前处理操作简便快速,灵敏度高,重复性好,适用于海苔、海带、紫菜等海藻食品中多种元素的同时测定。
목적：건립팽당반응지—전감우합등리자체질보법(inductively coupled plasma-mass spectrometry， ICP-MS)측정해조식품중락、얼、동、신、력、홍、연등중금속원소적분석검측방법。방법양품경미파소해후용전감우합등리자체질보의직접진행분석,채용내표원소72Ge、115In화209Bi소제기체간우화신호표이,팽당반응지기술(ORS)소제질보간우。결과각원소교정곡선적상관계수균대우0.9992,방법적검출한0.003μg/L~0.028μg/L,상대표준편차소우4.92%,가표회수솔위85.6%~106.2%,표준삼고물질적측정결과여표준치상부。결론해방법전처리조작간편쾌속,령민도고,중복성호,괄용우해태、해대、자채등해조식품중다충원소적동시측정。
Objective To establish an analysis method of inductively coupled plasma-mass spectrometry (ICP-MS) with octopole reaction system for the determination of 7 heavy metals including Cr, Ni, Cu, As, Cd, Hg and Pb in seaweed food.Methods After microwave digestion, the samples were directly determined by ICP-MS. Internal standard elements of germanium (72Ge), indium (115In) and bismuth (209Bi) were used to correct matrix interference and signal drifting, and the octopole reaction system (ORS) was used to eliminate mass spectrum interferences. Results The linear standard curves were obtained with the correlation coefficient above 0.9992. The detection limit of the method was 0.003~0.028 μg/L, and the relative standard deviation was less than 4.92%. The recovery rates were 85.6%~106.2%.The experimental results of standard reference materials were in good agreement with the certified values. Conclusion The method is simple, fast, and sensitive, and it is suitable for accurate quantitative analysis of heavy metals in seaweed foods.