从茶样中提取Zn (II) 和Cd (II) 离子的微固体阶段提取程序的开发,使用希斯蒂丁铜吸附剂从茶样中提取Zn (II) 和Cd (II) 离子
Atefeh Bakhshi1, Saeed Mohammad Sorouraddin1, Mohammad Reza Afshar Mogaddam2,3,4
1Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran. saied_sorour@yahoo.com.
Analytical methods : advancing methods and applications
|October 16, 2025
概括
一种新的微固体相提取方法有效地从茶样中提取 (Zn(II)) 和 (Cd(II)). 这种西西丁-铜酸盐吸附剂简化了分析,并提供了高回收率.
科学领域:
- 分析化学 分析化学
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 准确量化食品中 (Zn(II)) 和 (Cd(II)) 等重金属对公共健康至关重要.
- 现有的金属离子提取方法可能是复杂和耗时的.
研究的目的:
- 开发一种简单,高效和灵敏的微固体相提取 (μ-SPE) 方法,用于在茶中确定Zn (II) 和Cd (II).
- 为了合成和表征一种用于金属离子提取的新型吸收材料.
主要方法:
- 一种基于histidine和酸铜的吸附剂被合成并装入注射器中,用于μ-SPE.
- 提取茶样,通过吸附剂,并用甲醇溶解.
- 提取的分析物用火焰原子吸收光谱法 (FAAS) 量化.
- 优化了包括吸附剂质量,pH,剂类型/体积,盐度和流量等参数.
主要成果:
- 优化的方法实现了对Cd{\displaystyle Cd} 的2-100μgKg−1和对Zn{\displaystyle Zn} 的1-100μgKg−1的线性范围.
- 检测极限低至Cd{\displaystyle Cd} 的0.7μgKg−1和Zn{\displaystyle Zn} 的0.4μgKg−1.
- 证明了高精度,日内和日间相对标准偏差≤5%.
- 卓越的相对恢复 (94.5-100.8%) 证实了真实茶样的方法可行性.
结论:
- 开发的histidine-copper nitrate μ-SPE方法提供了一种简单,快速和灵敏的方法来确定茶中的Zn (II) 和Cd (II).
- 该方法消除了离心或旋转的需要,简化了分析过程.
- 这种技术对食品矩阵中重金属的常规监测具有前景.
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