摘要
以茭白为研究对象,建立了基于离子色谱法的茭白中总亚硫酸盐的检测方法。试验确定了离子色谱测定条件,经样品前处理条件优化,实现对茭白中总亚硫酸盐的定性和定量分析,并与国标蒸馏法进行了对比测定试验。结果表明:利用本研究所提出的方法检测,二氧化硫标准溶液在0.1~10.0 mg·L^(-1)范围内线性良好,不同浓度添加回收试验所得茭白样品回收率为86.1%~91.7%。该方法的精密度(RSD)为2.9%~4.2%,样品定量限为1.0 mg·kg^(-1)。
A determination method of sulfite in Zizania latifolia was established based on ion chromatography. The ion chromatographic conditions and pretreatments of sample were optimized. Then,the determination effect of this method was compared with distillation method,which is the national standard. The results indicated that this method has a good linearity in the range of 0. 1-10. 0 mg·L^（-1）for sulfur dioxide determination. The recovery rate was 86. 1%-91. 7%,the precision of the proposed method was 2. 9%-4. 2%,and the determination limit was 1. 0 mg·kg^（-1）.
出处
《浙江农业学报》
CSCD
北大核心
2016年第5期870-874,共5页
Acta Agriculturae Zhejiangensis
基金
国家农产品质量安全风险评估项目(GJFP 201501201)
关键词
离子色谱
二氧化硫
茭白
检测方法
ion chromatography
sulfur dioxide
Zizania latifolia
detection method
