Determination of Subtoxic Concentrations of Phosgene in Air by Electron Capture Gas Chromatography.

Air pollution

“…Other Inorganic Gaseous Pollutants. Phosgene has been determined in the part-per-billion range and higher by electron-capture gas chromatography (208). Various colorimetric reagents for phosgene were evaluated in liquid solution, impregnated on paper, and on granular solids (151).…”

An amino-substituted 2-(2′-hydroxyphenyl)benzimidazole for the fluorescent detection of phosgene based on an ESIPT mechanism

“…As to the detection of phosgene, conventional gas chromatography 17–19 and electrochemical technique 20 suffer from obvious drawbacks, such as bad portability, high cost and inconvenience in real-time detection. Nowadays, fluorescent detection methods are well developed and widespread due to their easy manipulation, fast response, high sensitivity and selectivity, and the possibility of real-time detection.…”

An ESIPT-Based Fluorescence Probe for Colorimetric, Ratiometric, and Selective Detection of Phosgene in Solutions and the Gas Phase

“…In contrast to conventional detection systems, such as those employing gas chromatographic − and electrochemical methods, − fluorescence probes utilizing small molecules have been investigated extensively and widely used due to their high sensitivity and selectivity, simple operations, and capabilities of real-time detection. − However, in contrast to those developed for detection of nerve agent mimics, − fluorescence probes for phosgene are limited, − and limitations exist in the use of some of those that have been developed thus far. For example, the selectivity of some of the reported probes for phosgene and nerve gas mimics has not yet been evaluated. − In addition, some of the previously developed phosgene fluorescence probes rely on the use of reaction groups that can be interfered with by formaldehyde and nitric oxide, − while others cannot discriminate between triphosgene and phosgene because they contain tertiary amine groups that catalyze the decomposition of triphosgene to phosgene .…”