Carbon monoxide is one of the most important reducing gases to be detected in combustion of hydrocarbon fuels, petroleum and automobile industries, heat-treating furnaces and, also in the first stages of fire. During the past four decades, gas sensors based either on the surface characteristics or the bulk properties of ceramics have been the subject of extensive research and development. New m...

background: today, air pollution is one of the major problems in large cities including isfahan. methods: the objective of this study was to investigate the variations of ozone (o3), carbon monoxide (co), nitric oxide (no), nitrogen dioxide (no2), nitrogen oxides (nox), sulphur dioxide (so2), and particulate matter (pm10) concentrations in different months at three stations and also to explore ...

The major hemoglobin fraction of menhaden (Breuoortia tyrrznnus) is a Root effect hemoglobin; at acid pH it exhibits low affinity behavior characteristic of the T state and at alkaline pH functional behavior characteristic of the R state. The rates of CO binding and dissociation have been measured by stopped flow and flash photolysis at low and high pH. At acid pH CO binding is slow and biphasi...

background: in 1999, duzce suffered two consecutive devastating earthquakes above magnitude 7 in august and november. in the present study, we aimed to evaluate the indoor air quality of coffeehouses by determining carbon monoxide (co) levels and their contributing factors in coffeehouses built before and after the earthquake. methods: we conducted our study in 76 turkish coffeehouses in duzce ...

Carbon monoxide is a product of haem degradation by haem oxygenase (HO), activated by inflammatory cytokines and oxidants. This study examined whether allergen challenge can increase exhaled CO levels, as a reflection of HO activation. Exhaled CO and nitric oxide, an expired gas also thought to reflect cytokine-induced airway inflammation, were measured in 15 atopic steroid-naive nonsmoking pat...

In the past decade the mouse has become the primary animal model of a variety of lung diseases. To assess various mechanisms underlying such pathologies, it is essential to make functional measurements that can reflect the developing pathology. In this regard, the diffusing capacity for carbon monoxide is a variable that directly reflects structural changes in the lung. Although measurement of ...

Carbon monoxide is a colorless, odorless gas produced as a by-product of incomplete combustion. Carbon monoxide poisoning accounts for approximately 3500 deaths in the United States annually. Carbon monoxide in exhaust fumes from motor vehicles accounts for most deaths due to carbon monoxide poisoning; however, poorly functioning heating systems, inhaled smoke, and propane-operated forklifts al...

We show that the different bond orders of individual carbon-carbon bonds in polycyclic aromatic hydrocarbons and fullerenes can be distinguished by noncontact atomic force microscopy (AFM) with a carbon monoxide (CO)-functionalized tip. We found two different contrast mechanisms, which were corroborated by density functional theory calculations: The greater electron density in bonds of higher b...

The chromo-fluorogenic detection of carbon monoxide in air has been achieved using a simple, inexpensive system based on ruthenium(II). This probe shows exceptional sensitivity and selectivity in its sensing behavior in the solid state. A color response visible to the naked eye is observed at 5 ppb of CO, and a remarkably clear color change occurs from orange to yellow at the onset of toxic CO ...

Platinum particles were grown directly by an electrodeposition process on electrochemically treated carbon paper (CP) for kinetic study of carbon monoxide (CO) desorption. The treatment on CP was performed by applying −2 V for cathodic oxidation over 5 min. Treated CP was characterized by FTIR to investigate the oxygen groups on its surface. CO surface coverage at each temperature was determine...