一种简单,快速和廉价的方法,通过电压测量来量化生物柴油中铁的低度,在微乳液破解诱导的提取后
Cristian H Krause1, Alexandre B Schneider1, Leandro Kolling1
1Instituto de Química, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, C.P. 15003, 91501-970, Porto Alegre, RS, Brazil. schneider.alexandre@ufrgs.br.
Analytical methods : advancing methods and applications
|April 29, 2024
概括
一种新方法精确地测量生物柴油中的铁 (Fe),使用微脉冲吸附性阴极剥离电压计 (DPAdCSV),在微乳液破碎后进行快速提取. 这种便携式技术简化了实验室外的铁分析.
科学领域:
- 分析化学 分析化学
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
背景情况:
- 在生物柴油中精确量化铁 (Fe) 对质量控制和发动机性能至关重要.
- 生物柴油中Fe分析的传统方法可能是复杂的,耗时的,需要专门的实验室设备.
- 需要更简单,更快,更容易获得的方法来确定生物柴油矩阵中的Fe.
研究的目的:
- 开发和验证一种替代的,简化的方法,用于检测生物柴油中的铁 (Fe).
- 使用微分脉冲吸附性阴极剥离电压计 (DPAdCSV) 进行敏感的Fe检测.
- 实施一种新的微乳液破碎技术,以有效地从生物柴油中提取Fe.
主要方法:
- 使用微乳液 (ME) 破碎技术 (EIMB) 从生物柴油中提取铁.
- 在 (Bi(III)) 存在时,Fe(III) 与1-(2-pyridylazo)-2-naphthol (PAN) 的复合.
- 在玻璃碳电极 (GCE) 上使用微分脉冲吸附性阴极剥离电压测量 (DPAdCSV) 来电化学确定Fe(III) -PAN复合体.
主要成果:
- 通过EIMB方法,可以快速有效地从生物柴油中提取Fe,而不需要表面活性剂.
- 使用便携式电位器进行了DPAdCSV测量,从而实现了现场分析.
- 达到1.7微克L-1的低检测极限 (LOD) 和5.5微克L-1的量化极限 (LOQ),其高精度得到恢复研究和与HR-CS GF AAS的比较证实.
结论:
- 开发的DPAdCSV方法提供了一种简单,快速和便携式的方法来确定生物柴油中的Fe.
- 该EIMB技术简化了样品的准备,使Fe分析更容易获得.
- 这种方法显示出生物柴油Fe含量的常规质量控制的巨大潜力.
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