A simple and highly sensitive colorimetric detection method for gaseous formaldehyde.

A simple and highly sensitive colorimetric detection method for gaseous formaldehyde.
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DOI:
10.1021/ja910366p
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发表时间:
2010-03-31
影响因子:
15
通讯作者:
Suslick KS
Suslick KS
中科院分区:
化学1区
文献类型:
--
作者:
Feng L;Musto CJ;Suslick KS

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已经开发出一种使用掺杂有 pH 指示剂的胺功能化聚合物薄膜的比色检测方法,用于快速、灵敏和定量检测浓度远低于 IDLH(立即危及生命或健康)的气态甲醛。一分钟内,即使 PEL(允许暴露限值)为 750 ppb,也可以轻松观察到可见的颜色变化。暴露 10 分钟后,检测限低于 50 ppb(PEL 的 7%)。该传感器基本上不受湿度或温度(4 至 50 °C)变化的影响,并且对常见干扰不敏感。
A colorimetric detection method using amine functionalized polymer films doped with a pH indicator has been developed for the rapid, sensitive and quantitative detection of gaseous formaldehyde at concentrations well below the IDLH (immediately dangerous to life or health). In one minute, visible color changes are easily observed even down to the PEL (permissible exposure limit) at 750 ppb. The limit of detection is below 50 ppb (7% of PEL) after 10 min exposure. This sensor is essentially unaffected by changes in humidity or temperature (4 to 50 °C) and is not sensitive to common interferents.
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