Sensitive Solid Reagent For Formaldehyde, And A New Formaldehyde Generator
作者:
JackL. Lambert,
JosephV. Paukstelis,
Yun-Long Liaw,
YuanC. Chiang,
期刊:
Analytical Letters
(Taylor Available online 1984)
卷期:
Volume 17,
issue 17
页码: 1987-1999
ISSN:0003-2719
年代: 1984
DOI:10.1080/00032718408065360
出版商: Taylor & Francis Group
关键词: formaldehyde;passive monitoring device;Purpald®;formaldehyde generator;paraformaldehyde
数据来源: Taylor
摘要:
A solid reagent of Purpald®-acetone aminal on sodium or potassium bicarbonate responds to formaldehyde in the sub-ppm concentration range. A purple color (λ=560 nm) is developed proportional to concentration of formaldehyde and time of exposure after wetting with a 90% acetone-10% water solution. The reagent should be of value as a semi-quantitative warning device for the presence of formaldehyde. A device is described which generates formaldehyde in air in the sub-ppm concentration range at room temperature with desired relative humidity. This generator could be used in the same manner to generate low concentrations of other substances of low volatility.
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