牛奶中的四环素抗生素通过固相提取方法确定,使用基于三酸盐的协调聚合物作为吸收剂
Victoria N Naumkina1, Veronika M Lyamina1, Vladimir A Zhinzhilo1
1Department of Chemistry, Southern Federal University, Rostov-on-Don 344090, Russia.
Polymers
|January 17, 2024
概括
三酸协调聚合物有效吸附四环素抗生素,提供稳定和可回收的吸附剂. 这种方法为牛奶分析中的样品制备提供了一个更简单的替代方案.
科学领域:
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
- 环境科学 环境科学
背景情况:
- 环素抗生素在畜牧业中被广泛使用,导致人们担心它们在牛奶等食品中的存在.
- 目前在牛奶样本中测定环素的方法,如真空蒸发,往往是耗时和复杂的.
- 开发高效和简单的样品制备技术对于准确的抗生素残留分析至关重要.
研究的目的:
- 为了合成和表征一种基于三酸盐的协调聚合物.
- 为了评估这种聚合物作为从牛奶中提取四环素抗生素固体相提取 (SPE) 的吸附剂的有效性.
- 研究开发的吸附剂的吸附机制,稳定性和可回收性.
主要方法:
- 合成三酸协调聚合物.
- 使用元素分析,红外光谱,X射线衍射和扫描电子显微镜进行表征.
- 固相提取 (SPE) 方法开发用于从牛奶样本中去除四环素抗生素.
主要成果:
- 合成的三聚酸盐对四环素抗生素具有400mg/g的高吸附能力.
- 吸附动力学遵循伪二阶模型,吸附同热量与弗洛伊德利希模型保持一致.
- 该过程是自发的,并且在热力学上有利,协调聚合物表现出良好的稳定性和可回收性.
结论:
- 三酸盐是一种有希望的,稳定的,可回收的材料,用于四环素抗生素的固体相提取.
- 这种SPE方法为传统的样品制备技术 (如真空蒸发) 提供了更简单和潜在的更快的替代方案.
- 开发的方法有可能用于在各种牛奶样本中常规确定四环素残留物.
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