摘要
为了探查食品香料大茴香醛中铅和砷重金属元素的含量,采用干法消解——石墨炉原子吸收法和浓硝酸、高氯酸(体积比20:1)混合酸常压消解——原子荧光法分别测定了大茴香醛中铅和砷的含量。结果表明:铅和砷的加标回收率分别为96.7%、94.8%,相对标准偏差(RSD)为3.9%和3.5%,检出限为0.005 5、0.003 2ng.mL-1,方法准确度和精密度良好;7批样品中铅含量在0.005 5～0.150 0 mg/kg之间,砷含量在0.039～0.196mg/kg之间。大茴香醛中铅、砷含量较低,作为食品添加剂使用很安全,可为制订蒸馏类香精香料安全标准提供参考。
The contents of lead and arsenic in seven batches food flavors （anisic aldehyde） were respectively determined by dry method digestion graphite furnace atomic absorption spectrometry and pressure digestion with acid mixture（nitric acid ： perchlofic acid=20 ： 1 ） atomic fluorescence spectrometry. The adding standard recovery rates of lead and arsenic by this method were 96.7% and 94.8%, the RSD were 3.9% and 3.5%, the detection limits were 0.005 5 ng＇mL1, 0.003 2 ng-mL1 respectively. The method has characteristics of simple, rapid and good repeatability. The lead contents of the seven hatches anisic aldehyde samples were within 0.005 5 mg/kg and 0.150 0 mg/kg, meanwhile, the arsenic contents of that were within 0.039 mg/kg and 0.196 mg/kg. The contents of lead and arsenic were low, hence anisic aldehyde is safe as a food additive for human and the results can provide scientific reference for formulating national safety standards of distillation flavor spices.
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2013年第3期125-128,共4页
Journal of Central South University of Forestry & Technology
基金
广西分析测试研究中心基本科研业务费项目(2011ACZ09)
关键词
食品香料
大茴香醛
石墨炉原子吸收法
原子荧光光谱法
铅
砷
food flavor
anisic aldehyde
graphite furnace atomic absorption spectrometry
atomic fluorescence spectrometry
lead
arsenic
