Air pollution

Preparation of a Composite Film Electrode Containing 12-Tungstosilicic Acid and Its Electrocatalytic Reduction for Nitrite

“…1B). As can be observed, the cyclic voltammogram presents the same feature described for SiW 12 anion.…”

“…The overpotential of direct electroreduction of nitrite was remarkably decreased because of electrocatalysis caused by the first wave of SiW 12 .…”

“…Due to the toxicity and suspected carcinogenicity of nitrite ions, their determination in environmental and food samples is receiving considerable attention [12][13]. The direct electroreduction of the nitrite ion on the most electrode surfaces is thermodynamically favorable, however, the charge-transfer kinetics associated with the reaction are slow [14], consequently the reduction potential of nitrite is extremely negative [15], and it is difficult to detect nitrite directly using its reduction behavior.…”

Electrochemical properties and electrocatalytic activity of FAD immobilized onto cobalt oxide nanoparticles: Application to nitrite detection

“…Much concern has been shown about the level of nitrite in foods and beverages because nitrite can react in the stomach with dietary compounds to form toxic and carcinogenic nitrosamines [1][2][3][4][5]. Furthermore, in the body nitric oxide is an important messenger in cellular communications [6], immune regulation [7] and neurotransmission [8].…”

Measurement Methods to Determine Compliance with Ambient Air Quality Standards for Suspended Particles

“…Four Air and Waste Management Association Specialty Meetings have been conducted 10 -1519 on particulate standards, and a major portion of each one was dedicated to measurement methods. Lodge, 20 Hopke, 21 Fox, 22 Willeke and Baron, 23 and Cohen and Hering 24 present compendiums of aerosol measurement procedures, options for sampling and analysis, and lists of manufacturers and vendors. Where appropriate, individual papers and chapters from these resources are cited throughout this review.…”