CAJ | 학술논문

建立采用电感耦合等离子体质谱法对肉及肉制品中铅、砷、镉、铬、硒、汞、镍7种痕量元素同时检测的方法。用微波消解仪对肉及肉制品进行前处理，以铑作为内标，经电感耦合等离子体质谱仪针对7种痕量元素进行测定。优化微波消解条件以及电感耦合等离子体质谱仪器测定条件。结果表明：内标法能克服仪器信号漂移及样品基体效应的影响。标准曲线的线性范围在0～20 ng/mL，回归方程的相关系数均大于0.999，各元素的加标回收率在89.4%～98.9%之间，相对标准偏差小于5%，检出限均低于国标方法中所规定的方法检出限。该方法具有快速、准确、可靠、灵敏度高及多元素同时分析等优点，可以满足批量肉及肉制品中铅、砷、铬、镉、硒、镍、汞检验和测定。
건립채용전감우합등리자체질보법대육급육제품중연、신、력、락、서、홍、얼7충흔량원소동시검측적방법。용미파소해의대육급육제품진행전처리，이로작위내표，경전감우합등리자체질보의침대7충흔량원소진행측정。우화미파소해조건이급전감우합등리자체질보의기측정조건。결과표명：내표법능극복의기신호표이급양품기체효응적영향。표준곡선적선성범위재0～20 ng/mL，회귀방정적상관계수균대우0.999，각원소적가표회수솔재89.4%～98.9%지간，상대표준편차소우5%，검출한균저우국표방법중소규정적방법검출한。해방법구유쾌속、준학、가고、령민도고급다원소동시분석등우점，가이만족비량육급육제품중연、신、락、력、서、얼、홍검험화측정。
A method for the simultaneous determination of 7 trace elements (lead, arsenic, cadmium, chromium, selenium, mercury, and nickel) in meat and meat products by inductively coupled plasma mass spectrometry (ICP-MS) with microwave digestion was established. Samples were pretreated by microwave digestion and determined by ICP-MS with rhodium (Rh) as the internal standard. The microwave digestion conditions and the instrumental parameters were optimized. It was found that the instrumental signal drift and matrix effect could be overcome by using the internal standard method. The developed standard curve was linear in the range of 0 to 20 ng/mL, with a correlation coefficient of more than 0.999. The recoveries of the analytes in spiked samples ranged from 89.4% to 98.9% and the precision expressed as relative standard deviation was less than 5%. The limits of detection for the trace elements were all lower than those stipulated in the Chinese national standards. The proposed method was rapid, accurate, reliable, sensitive and suitable for simultaneous multi-element analysis of meat and meat products.