A Continuous Flow System for the Measurement of Ambient Nitrogen Oxides
News Nov 14, 2014
A new chemosensor has been used to monitor atmospheric nitrogen oxides [NO + NO2] at parts per billion (ppb) level. It is based on the catalytic reaction of nitrogen oxides with rhodamine B hydrazide (RBH) to produce a colored compound through the hydrolysis of the amide bond of the molecule. A simple colorimeter has been used to monitor atmospheric nitrogen dioxide at ppb level. The air samples were purged through a sampling cuvette containing RBH solution using peristaltic pump. The proposed method has been successfully applied to monitor the ambient nitrogen dioxide levels at traffic junction points within the city limits and the results obtained are compared with the standard Griess-Ilosvay method.
The article, A Continuous Flow System for the Measurement of Ambient Nitrogen Oxides [NO + NO2] Using Rhodamine B Hydrazide as a Chemosensor, is published in Analytical Chemistry Insights and is free to access.
University of Wisconsin–Madison Professor of Chemistry Shannon Stahl has received the Steenbock Professorship in Chemical Sciences. In addition to advancing the fundamental science in this area, Stahl has been involved in numerous industrial collaborations that have led to practical applications, including target applications relevant to pharmaceutical synthesis.READ MORE