微流体纸质分析装置用于无机物种的物种化
Natalie Uhlikova1, M Inês G S Almeida1, Ian D McKelvie1
1School of Chemistry, The University of Melbourne, Victoria 3010, Australia.
Talanta
|February 2, 2024
概括
这项研究引入了一种基于纸的微流体分析装置 (μPAD),用于同时测量水中的和酸盐. 该设备为环境分析提供了一种新方法.
科学领域:
- 分析化学 分析化学
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 无机物种,特别是和酸盐,是水质的关键指标.
- 确定这些物种在环境样本中的准确和可访问的方法至关重要.
- 现有的方法可能很复杂,需要专门的实验室设备.
研究的目的:
- 开发一种基于纸的微流体分析装置 (μPAD),用于同时测定和酸盐.
- 在一个单一的μPAD系统中整合气体扩散分离和固体相减少.
- 为环境水分析提供一个具有成本效益和用户友好的分析工具.
主要方法:
- 开发一种基于纸张的三层过器,具有不同的样品,试剂和检测区域.
- 使用Devarda的合金微粒子在试剂区中将酸盐降解为氨.
- 在检测区中使用酸指标 (青色胺或尼特拉黄色) 进行色度定量测量.
- 实施气体扩散分离以隔离用于检测的氨物种.
主要成果:
- 在环境水样和土壤提取物中,μPAD成功地确定了和酸盐.
- 量化范围取决于所使用的指标,量化极限低至2.1 mg N L-1 氨和4.2 mg N L-1 酸盐 (使用尼特拉黄色).
- 开发的μPAD表现出良好的稳定性,在冷保存时持续长达62天.
结论:
- 成功开发了一种新的μPAD,用于同时确定环境水中的和酸盐.
- 该设备在纸质平台上集成了创新的气体扩散和固体相减少技术.
- 这种方法为水质监测提供了一个有希望的,低成本的,便携式的替代方案.
更多相关视频
07:14Automated, High-resolution Mobile Collection System for the Nitrogen Isotopic Analysis of NOx
Published on: December 20, 2016
11.6K
08:05Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O
Published on: October 7, 2020
6.1K
相关概念视频
01:17Precipitation and Co-precipitation
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
01:19Gas Chromatography: Types of Detectors-II
In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...