一个小型化的排放光谱仪与头部空间注射相结合,用于快速和灵敏地确定食品样本中的酸盐
Yang Liu1, Meng Zhang1, Kai Li2
1Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, China.
Food chemistry
|December 30, 2025
概括
一个新的小型化排放光谱仪可以在食品中进行敏感的现场化物 (NO2-) 分析. 该方法使用分子发射光谱法 (MES) 进行快速检测,以提高准确性和减少样本准备.
科学领域:
- 分析化学 分析化学
- 频谱学是一种光谱学.
- 食品科学 食品科学 食品科学
背景情况:
- 化物 (NO2-) 在食品中普遍存在,但过量摄入会给健康带来风险.
- 敏感的,低成本的,现场的亚酸盐分析方法对于食品安全至关重要.
研究的目的:
- 开发一种灵敏,快速和便携式的现场化物 (NO2-) 测定方法.
- 使用分子辐射谱法 (MES) 进行准确的食品分析.
主要方法:
- 开发了一种小型的排放光谱仪与自动头部空间注入系统相结合.
- 化物 (NO2-) 与化发生反应,产生氧化 (NO) 气体.
- 使用分子发射光谱法 (MES) 在237.0nm检测到NO气体.
主要成果:
- 该方法实现了酸盐 (NO2-) 的检测极限为3μg/L.
- 相对标准偏差在0.1 mg/L时为3.8%,显示出良好的精度.
- 该方法通过使用认证的参考材料和真实食品样本成功验证.
结论:
- 开发的微型光谱仪为现场化物 (NO2-) 分析提供了灵敏可靠的工具.
- 自动头部空间注入策略提高了灵敏度,缩短了分析时间.
- 这种紧型设备对于快速评估食品安全非常有前途.
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