本文已被：浏览 1255次 下载 352次
投稿时间：2018-10-09
投稿时间：2018-10-09
中文摘要: 白酒样品加热除掉乙醇，微波消解定容，经石墨炉原子化后，在283.3 nm 处测定吸光值。在一定浓度范围内的铅的吸光值与铅含量成正比。结果显示，采用标准曲线校正法测No：QC-156A-3 白酒质控样品铅含量为0.262 mg/L，比质控样品中铅的指定值0.301 mg/L 低12.3%；而采用标准加入校正法以消除白酒基体引入的干扰，测得铅含量为0.309 mg/L，更接近指定值。
Abstract:Ethanol was removed from liquor samples by heating and microwave digestion，after atomization in graphite furnace，the absorbance value was determined at 283.3 nm.The absorbance of lead in a certain concentration range is proportional to the lead content.The results showed that the lead content of No：QC-156A-3 liquor quality control samples was 0.262 mg/L by standard curve correction method，which was 12.3%lower than the specified lead content of 0.301 mg/L in quality control samples；while the interference of liquor matrix was eliminated by standard addition correction method，and the lead content was 0.309 mg/L，which was closer to the specified value.
keywords: liquor lead graphite furnace method standard curve correction method standard addition correction method
文章编号：201912038 中图分类号： 文献标志码：
基金项目:
| Author Name | Affiliation |
| LI Bi-bo，YAN Bing-hua，CHEN Zhi-yong | Xiantao Food and Drug Inspection and Testing Center，Xiantao 433000，Hubei，China |
引用文本：
津ICP备20000603号-1