在食用油中的重金属通过一种新的电压测量味道传感器阵列的确定
Hasan Kiani1, Babak Beheshti1, Ali Mohammad Borghei1
1Department of Biosystem Mechanical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Journal of food science and technology
|April 2, 2024
概括
这项研究引入了一种新的电压测量味道传感器阵列 (VTSA),用于识别食用油中的重金属 (HM). 玻璃碳电极在检测大豆和大麻油中的,,锡和方面表现出卓越的性能.
科学领域:
- 分析化学 分析化学
- 食品科学 食品科学 食品科学
- 电化学 电化学 电化学
背景情况:
- 食用油中的重金属污染对健康构成重大风险.
- 准确高效的检测方法对于食品安全至关重要.
- 现有的重金属分析方法可能是复杂和耗时的.
研究的目的:
- 开发和验证一个电压测量味道传感器阵列 (VTSA),用于识别食用油中的重金属 (HM).
- 为了比较不同电极 (笔石墨,丝印,玻璃碳) 对于HM检测的有效性.
- 评估化学测量方法的性能,用于对大豆和大麻油的HM分类.
主要方法:
- 一个电压测量味道传感器阵列 (VTSA) 使用笔石墨 (PG),丝印 (SP) 和玻璃碳 (GC) 电极构建.
- 重金属 (,,锡,) 在0.05,0.1和0.25 ppm的度中被添加到大豆和兰油中.
- 化学测量分类方法,包括主要组件分析 (PCA) 和K-最近邻居 (KNN),用于分析传感器输出.
- 部分最小平方 (PLS) 与VTSA结合用于预测分析.
主要成果:
- GC电极表现出色,解释了 100% 和 99% 的菜油和大豆油的差异.
- PG和SP电极也显示出显著的差异解释 (分别高达96%和91%).
- K-最近的邻居 (KNN) 有效地分类了食用油中的重金属.
- 部分最小平方 (PLS) 与VTSA相结合,在菜油中实现了99%的预测准确度.
结论:
- 开发的VTSA,特别是使用GC电极,是识别食用油中的重金属的高效工具.
- 化学测量分析显著提高了VTSA系统的分类能力.
- 这种方法提供了一种有希望的,敏感和高效的方法,以确保食用油在重金属污染方面安全.
相关概念视频
01:13Voltammetry: Stripping Methods
214
Anodic Stripping Voltammetry (ASV), Cathodic Stripping Voltammetry (CSV), and Adsorptive Stripping Voltammetry (AdSV) are electrochemical techniques used to determine trace amounts of analytes in solution. These methods involve applying a potential to an electrode and measuring the resulting current.
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
214
01:18Effects of EDTA on End-Point Detection Methods
272
Different methods, such as visual observance of metal-ion indicators, spectroscopic techniques, and potentiometric methods, can determine the endpoint of an EDTA titration.
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a...
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a...
272