CAJ | 학술논문

提出了一种用于烟叶中镉形态分析的准确可靠的试验方法。用超声提取-离心-真空抽滤将烟叶样品中镉分离成不溶态和可溶态，并将其中可溶态用大孔吸附树脂分离成无机态和有机态。研究不同试验条件对镉形态分离的影响，确定了较佳试验条件，并用ICP-MS测定烟叶中镉不同形态含量。考察了分离方法的精密度和回收率。结果表明：方法RSD为0.3%～4.0%，回收率为94.6%～97.3%，检出限和定量限分别为0.006μg·L-1和0.021μg·L-1，日内RSD和日间RSD分别为1.7%和4.5%。该方法能有效地应用于烟叶中镉的形态分析。
제출료일충용우연협중력형태분석적준학가고적시험방법。용초성제취-리심-진공추려장연협양품중력분리성불용태화가용태，병장기중가용태용대공흡부수지분리성무궤태화유궤태。연구불동시험조건대력형태분리적영향，학정료교가시험조건，병용ICP-MS측정연협중력불동형태함량。고찰료분리방법적정밀도화회수솔。결과표명：방법RSD위0.3%～4.0%，회수솔위94.6%～97.3%，검출한화정량한분별위0.006μg·L-1화0.021μg·L-1，일내RSD화일간RSD분별위1.7%화4.5%。해방법능유효지응용우연협중력적형태분석。
An accurate and reliable method for speciation analysis of cadmium in tobacco leaf was developed. Soluble and insoluble cadmium were separated by extraction-centrifugation-suction filtration. Inorganic and organic cadmium were separated by resins. Influence of different experimental conditions on separation of cadmium were investigated, and optimal conditions were established. Determination of cadmium was performed by ICP-MS. Results showed that recovery of inorganic cadmium was 94.6%-97.3%, RSD of 0.3%-4.0%, detection limit of 0.006μg L-1, quantitation limit of 0.021μg L-1, and that intra-day and inter-day precisions were 1.7% and 4.5%, respectively. The proposed method could be effectively used for speciation analysis of cadmium in tobacco leaf.