电化学方法用于测定有机过氧化物直接在酸中
Vanina Ivanova1, Mariya Pimpilova2, Maria Stoyanova1
1Department of Physical Chemistry, Plovdiv University "Paisii Hilendarski", 24, Tzar Assen Str., 4000 Plovdiv, Bulgaria.
Molecules (Basel, Switzerland)
|January 25, 2025
概括
这项研究引入了一种新的电化学方法,用于量化油中脂质过氧化的主要产物 - - 氧化物. 该技术为评估石油质量和确保食品安全提供了可靠和准确的替代方案.
科学领域:
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 脂质过氧化显著影响油的质量和安全性,产生对人类健康有害的稳定氧化物.
- 过氧化物值 (PV) 是石油质量控制的关键参数,传统上是通过度定位测量.
- 现有的PV测定方法可能耗时,可能涉及危险的试剂.
研究的目的:
- 开发和验证一种替代电化学方法来确定油中的过氧化物值 (PV).
- 评估拟议的电化学方法的准确性和可重复性,与标准的度定位相比.
- 证明电化学方法用于分析现实世界石油样品的适用性,包括那些过期的样品.
主要方法:
- 使用用Co3O4合的石墨碳化物 (g-C3N4) 修改的玻璃碳电极对氧化物进行电化学定量.
- 使用了一种有机溶剂介质,包括乙二和有机盐.
- 使用标准添加方法进行校准,使用氧化 (BPO) 作为甲中的模型化合物和模型油样本.
主要成果:
- 电化学方法证明了线性反应 (R2>0.99) 和出色的可重现性.
- 对BPO的定量分析显示了高准确度,与理论值非常接近.
- 电化学方法的准确性与植物脂肪的标准度定位进行了验证.
- 过氧化物度在过期的抗纤维素油样本中成功确定.
结论:
- 开发的电化学方法提供了一个灵敏,准确和可重复的替代方案,用于在油中的PV测定.
- 这种方法为食品安全和质量控制提供了有价值的工具,有可能取代传统的定位方法.
- 该方法的有效性在模型系统和现实世界化品油样本中得到证实.
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