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投稿时间：2017-02-13
投稿时间：2017-02-13
中文摘要: 建立一种简单快捷的离子色谱法测定干笋中二氧化硫残留的方法。 样品经浸泡后蒸馏， 利用 1.5 %的 H2O2 溶液将二氧化硫氧化为硫酸根，通过离子色谱法测定。结果表明：二氧化硫含量在 2.0 μg/mL~32.0 μg/mL 范围内线性 良好，相关系数 r2 为 0.999，检出限为 0.1 mg/kg，定量限为 0.3 mg/kg，加标回收率达到 83.6 %～90.4 %。
Abstract:A rapid and effective method was established for the determination of sulfur dioxide residue in dried bamboo shoots by ion chromatography. After the sample being crushed，sulfur dioxide in the sample was distilled and oxidized to sulfate by 1.5 % H2O2， and determined by ion chromatography．The calibration curve was linear in the concentrationrange of 2.0 μg/mL-32.0 μg/mL with a correlation coefficient of 0.999. The detection limit was 0.1 mg/kg and the quantitative limit was 0.3 mg/kg，and the recovery was in the range of 83.6 %-90.4 %.
文章编号：201715037 中图分类号： 文献标志码：A
基金项目:
| Author Name | Affiliation |
| MA Yu-chun | Jiangsu Food and Pharmaceutical Science College， Huai'an 223003， Jiangsu， China |
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