一种离子液相结合的磁性石墨碳化物纳米复合材料:一种有效的样品预处理工具,用于分离和确定
Emmanuvel Arputharaj1, Shivangi Singh1, Raghavendra Rao Pasupuleti1
1Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan. yelihu@kmu.edu.tw.
Analytical methods : advancing methods and applications
|November 22, 2023
概括
一种新的磁纳米复合物吸附剂 (MNC-SPE) 方法使用ICP-MS.有效地提取和确定水样中的 (Se). 这种可重复使用的吸附剂为环境监测提供了高灵敏度和精度.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 精确的 (Se) 在水中的测定对于环境和健康评估至关重要.
- 现有的取和确定Se的方法可能是复杂和耗时的.
- 需要开发灵敏,高效和用户友好的分析方法.
研究的目的:
- 开发和验证一个创新的磁纳米复合材料吸附剂 (MNC-SPE) 用于 (Se) 提取和确定.
- 使用已制造的MNC-SPE与感应合等离子体质谱仪 (ICP-MS) 在真实水样中进行微量Se分析.
- 优化提取参数并评估方法的性能,包括线性,检测极限和可重复使用性.
主要方法:
- 通过将Fe3O4纳米颗粒混合在涂有离子液的石墨烯碳化物纳米片 (GCN NSs) 上,制造磁性纳米复合材料吸附剂 (MNC-SPE).
- 优化关键参数:吸附剂剂量,接触时间,化剂类型,化剂体积,化剂时间和吸附剂可重复使用性.
- 使用各种技术分析MNC-SPE的结构和化学特性.
- 使用感应合血质谱法 (ICP-MS) 验证该方法.
主要成果:
- 跨国SPE展出了大量适用于Se吸附的活性表面功能单元.
- 在最佳的反应条件下,在0.15100 pg μL-1.1的范围内,Se的确定产生了优异的线性 (R2 = 0.9994).
- 达到0.063 pg μL−1的低检测极限 (LOD) 和0.147 pg μL−1.1的量化极限 (LOQ).
- 在高精度 (RSD% = 4.8%) 的尖端自来水和河水样本中证明了高的Se回收 (87.6115.5%).
- 该MNC-SPE吸附剂已成功再生并使用0.5M NaOH化剂重复使用四个周期.
结论:
- 拟议的MNC-SPE与ICP-MS相结合,提供了一种高度敏感,高效和用户友好的方法,用于在水样中提取和确定Se.
- 吸附剂的可重复使用性和该方法在真实样本中的性能凸显了它在环境监测中的实际适用性.
- 这种方法为准确的微量分析提供了有价值的工具,有助于评估水质.
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