摘要
利用微波消解方式消解食用植物油样品,结合电感耦合等离子体光谱法同时测定植物油中重金属元素残留量。实验方法适用于不同生产工艺及不同种类植物油样品中重金属离子的测试分析。研究表明,当金属离子加量为1μg/g时,加标回收率为90%-107%,测试结果的相对标准偏差为2%-7%,且重金属元素含量与食用植物油的生产工艺及食用植物油种类的相关性不显著。
The content of heavy metals in vegetable edible oils has been determined using inductively coupled plas- ma spectrometer after microwave digestion. The method was applied to different oil samples and different production process to analyze heavy metalsion of copper, lead, zinc, chromium, cadmium, nickel, ferrum, aluminium and manganese in vegetable edible oils. The method has been validated by recovery experiments, obtaining satisfactory results in the range of 90% to 107% when spiked with 1 μg/g of each metal respectively. The relative standard deviations ranged from 2% to 7% in samples. The content of heavy metal elements is barely affected by production process and vegetable edible oil types.
出处
《重庆科技学院学报（自然科学版）》
CAS
2016年第4期77-80,共4页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
基金
重庆市大学生科技创新资助项目"微萃取技术在食用油重金属分析中的应用研究"(201511551354)
关键词
食用植物油
重金属
微波消解
光谱法
edible vegetable oil
heavy metals
microwave digestion
optical spectrum
