在肝和牛贝提取物样本中电化学探测Hg(ii) 使用新型修改的SDA/MWCNT电极
Jayagopi Gayathri1, A Roniboss1, Sivakumar Sivalingam1
1Department of Chemistry, VelTech Rangarajan Dr Sagunthala R & D Institute of Science and Technology Avadi Chennai Tamil Nadu 600 062 India drsivakumars@veltech.edu.in.
RSC advances
|May 21, 2024
概括
一个使用N,N'-bis(salicylaldehyde) -1,2-diaminobenzene (SDA) 和多壁碳纳米管 (MWCNT) 的新型电化学传感器有效检测了离子 (Hg(ii)). 这种传感器在分析食品样本中的方面表现出高灵敏度和稳定性.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- 重金属污染,特别是 (Hg) 污染,对环境和健康构成重大风险.
- 准确的检测方法对于监测食品和水源中的Hg2水平至关重要.
- 开发灵敏和选择性的电化学传感器是一个活跃的研究领域.
研究的目的:
- 为了合成和表征一种新的N,N-bis(甲) -1,2-二氨基 (SDA) 连接体.
- 开发一种使用SDA和多壁碳纳米管 (MWCNT) 来检测Hg的改性电极.
- 评估制造的电化学传感器在真实样本中进行Hg分析的性能.
主要方法:
- 使用FT-IR,1H-NMR和13C-NMR光谱学的SDA配体的合成和表征.
- 使用SDA/MWCNT修改的电极的制造和表面形态的表征使用SEM与EDX.
- 使用循环电量计 (CV) 和电化学阻抗光谱 (EIS) 的电化学分析.
- 使用方波阳极剥离电压测量 (SWASV) 量化Hg(ii).
主要成果:
- 与裸体MWCNT电极相比,SDA/MWCNT修改的电极表现出增强的电流和电导率.
- 在SEM分析中,修改过的电极和Hg (ii) 复合体有不同的晶体结构.
- 在SWASV分析中,Hg的线性反应显示在1.3至158μg L-1的范围内,低检测极限 (LOD) 为0.24μg L-1.
- 传感器表现出良好的可重现性,稳定性和抗干扰能力.
结论:
- 新型的SDA/MWCNT修改电极作为一个高效的电化学传感器用于Hg的检测.
- 该传感器提供了一种灵敏,稳定和可重复的方法,用于分析在复杂的矩阵中,如肝和牛贝提取物.
- 结果与传统的原子吸收光谱学 (AAS) 有很好的一致性,验证了传感器的实际适用性.
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