干百合中二氧化硫测定  

Determination of Sulfur Dioxide in Dried Lilies

作　　者：王于敏 WANG Yumin(Nanping Institute for Food and Drug Quality Control,Nanping 353000,China)

机构地区：[1]南平市食品药品检验检测中心,福建南平353000

出　　处：《食品安全导刊》2023年第36期65-67,共3页China Food Safety Magazine

摘　　要：采用《食品安全国家标准食品中二氧化硫的测定》(GB 5009.34—2022)中第一法酸碱滴定法与第三法离子色谱法对3种不同干百合样品中的二氧化硫含量进行测定,并通过准确度与精密度、加标回收率、检出限等指标对两种测定方法进行对比分析。结果表明,两种测定方法均能满足方法验证要求,可用于干百合中二氧化硫含量的检测。酸碱滴定法适用于大批量干百合样品中二氧化硫含量测定,而对于其中发现的不合格样品,宜采用准确度更高的离子色谱法进行二次确认,以保证实验结果的准确性。This study used the first acid-base titration method and the third ion chromatography method in GB 5009.34—2022 to determine the sulfur dioxide content in three different dried lily samples,and compared the two determination methods through accuracy and precision,spiked recovery rate,detection limit and other indicators.The results indicate that both determination methods can meet the requirements of method validation and can be used for the detection of sulfur dioxide content in dried lilies.The acid-base titration method is suitable for the determination of sulfur dioxide content in large quantities of dried lily samples.For unqualified samples found,it is advisable to use ion chromatography with higher accuracy for secondary confirmation to ensure the accuracy of the experimental results.

关 键 词：干百合 二氧化硫 离子色谱法 酸碱滴定法 

分 类 号：TS207.3[轻工技术与工程—食品科学]