在现场使用稳定的黄金纳米粉来追踪硫化在典型的环境样本中的便携式色度测量套件
Shuang Su1, Zhiyang Zhang2, Jiadong Chen3
1College of Biological Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
Journal of hazardous materials
|April 26, 2025
概括
这项研究介绍了一种无酶的便携式设备,用于使用金纳米棒粉检测有毒硫化 (H2S). 创新的传感器为环境和安全应用提供灵敏,可靠和稳定的现场H2S检测.
科学领域:
- 纳米材料科学 科学 纳米材料科学
- 分析化学 分析化学
- 环境科学 环境科学
背景情况:
- 在现场检测有毒的硫化 (H2S) 对环境监测,污水追踪和职业安全至关重要.
- 现有的基于黄金纳米棒 (Au NRs) 的色度测量方法用于H2S检测,由于酶和纳米颗粒的不稳定性而面临限制.
研究的目的:
- 开发一种无酶,便携式和稳定的H2S检测装置,利用Au NRs粉末进行增强的色度分析.
- 提高基于Au NRs的传感器在复杂矩阵中检测H2S的实用性和长期适用性.
主要方法:
- 采用了两步感测策略,包括H2S微提取和色度测试.
- 使用硫酸的头部空间单滴微提取 (HS-SDME) 用于H2S积累.
- 溶解的H2S将KIO3降低到I2,在Br−和CTA+的存在下蚀刻AuNRs,导致可检测的颜色变化.
主要成果:
- 开发的方法实现了H2S的0.05μM的视觉检测极限,明显低于甲蓝法.
- HS-SDME对与其同时存在的离子和有机分子表现出极好的选择性.
- 真实样本验证显示了高回收率 (92.40%-109.51%),证实了环境监测的可靠性.
结论:
- 基于Au NRs粉末的无酶,便携式H2S传感器成功开发,提供高灵敏度和稳定性.
- 无液体测试套件简化了H2S检测,使其适用于现场环境监测和污染追踪.
- 这一进步增强了基于Au NRs的传感器在现实世界H2S分析中的实用性.
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