Sentences with phrase «dichloromethane in»

Columbia Engineering's compact, chip - scale dual comb spectrometer was able to measure a broad spectrum of dichloromethane in just 20 microseconds (there are 1,000,000 microseconds in one second), a task that would have taken at least several seconds with conventional spectrometers.

Measurements of dichloromethane in the atmosphere over the past two decades, provided by scientists from the National Oceanic and Atmospheric Administration (NOAA) in the United States, were also analysed.

Not exact matches

«While ozone depletion from dichloromethane is currently quite modest, it is uncertain how the amount of this gas in the atmosphere will change in the future.

Although the future trajectory of dichloromethane is uncertain, without any regulations on emissions, it is likely concentrations will fall somewhere in between the ranges presented here.

The findings, published in Nature Communications, suggest that a previously ignored chemical called dichloromethane may now be contributing to ozone depletion and should be looked at to improve future ozone predictions.

At present, the long - term recovery of the Ozone Layer from the effects of CFCs is still on track, but the presence of increasing dichloromethane will lead to uncertainty in our future predictions of ozone and climate.»

The team set out to measure air pollution in East Asia to figure out where the increase in dichloromethane was coming from and if it could affect the ozone layer.

Dichloromethane was found in large amounts, and so was 1,2 - dichloroethane, an ozone - depleting substance used to make PVC.

The amount of this substance in the atmosphere decreased in the 1990s and early 2000s, but over the past decade dichloromethane became approximately 60 % more abundant.

A widely used organic solvent, dichloromethane is abundant in industrial areas as well as in wetland emissions.

Dichloromethane breaks down in the atmosphere in about four months and its harmful degradation products are completely removed from the atmosphere within a few years of their emissions.

While its production, use and destruction are accurately monitored and reported, it also forms as a by - product in the production lines of chloroform and dichloromethane.

PEG is soluble in water, methanol, ethanol, acetonitrile, benzene, and dichloromethane, and is insoluble in diethyl ether and hexane.

These new ozone - busters include dichloromethane (DCM), a common and cheap paint stripper, also used in foam - blowing agents and, ironically, in the manufacture of «ozone - friendly» alternatives to CFCs.