一种基于紫色发光二极管的气相分子吸收装置,用于测量环境水中的酸盐和酸盐
Chuanyu Liu1, Shuo Gao1, Xiaoxuan Han2
1School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China.
概括
一个新的设备使用可见光吸收光谱学准确检测水中的酸盐和酸盐. 这种简单而敏感的系统非常适合在复杂的环境样本中进行现场测量.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 频谱测量是一种光谱测量.
背景情况:
- 酸盐和酸盐是水质的关键指标.
- 在复杂矩阵中准确检测具有挑战性.
- 现有的方法可能缺乏现场可移植性.
研究的目的:
- 开发一种简单而灵敏的装置,用于环境水中的酸盐和酸盐检测.
- 整合一个连续注射分析系统与可见光气相分子吸收光谱.
- 为了在复杂矩阵中实现现场测量.
主要方法:
- 可见光气相分子吸收光谱法.
- 检测电池,半导体制冷温度控制系统和酸盐反应堆的整合.
- 使用紫色LED (400-405nm) 和可见光电压转换器 (TSL257).
主要成果:
- 达到了0.055 mmol/L的化物和0.36 mmol/L的酸盐的检测极限.
- 线性校准范围为酸盐的0.1-15 mmol/L和酸盐的1-10 mmol/L.
- 证明了高精度 (酸盐为5.2%,酸盐为9.0%) 和降低了基线噪声3.75倍.
结论:
- 开发的设备提供了一种简单,灵敏和强大的酸盐和酸盐测定方法.
- 该系统适用于环境水域的现场实地测量.
- 经过验证的方法显示了常规水质监测的潜力.
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