Search results
Results from the WOW.Com Content Network
Fourier transform infrared spectroscopy (FTIR) [1] is a technique used to obtain an infrared spectrum of absorption or emission of a solid, liquid, or gas. An FTIR spectrometer simultaneously collects high-resolution spectral data over a wide spectral range.
Water vapor concentration for this gas mixture is 0.4%. Water vapor is a greenhouse gas in the Earth's atmosphere, responsible for 70% of the known absorption of incoming sunlight, particularly in the infrared region, and about 60% of the atmospheric absorption of thermal radiation by the Earth known as the greenhouse effect. [25]
Ultrapure water (UPW), high-purity water or highly purified water (HPW) is water that has been purified to uncommonly stringent specifications. Ultrapure water is a term commonly used in manufacturing to emphasize the fact that the water is treated to the highest levels of purity for all contaminant types, including organic and inorganic compounds, dissolved and particulate matter, and ...
Consumer Reports recently tested 47 bottled waters — including 35 noncarbonated and 12 carbonated options — and found levels of "toxic PFAS chemicals" in several popular brands that were above ...
Consumer Reports is an independent, nonprofit organization which works with consumers to create a fairer, safer, and healthier world. Both Wikipedia and Consumer Reports are non-profit media organizations and share a common goal of providing the best available information to people who are seeking it. Consumer Reports contributes information to ...
Nexgrill Deluxe 720-0896B (Home Depot) $449.00 at Home Depot. Nexgrill Deluxe 720-0896B (Home Depot) $652.55 at Walmart. Best Large Gas Grills Monument Grills 77352
The dispersive method is more common in UV-Vis spectroscopy, but is less practical in the infrared than the FTIR method. One reason that FTIR is favored is called "Fellgett's advantage" or the "multiplex advantage": The information at all frequencies is collected simultaneously, improving both speed and signal-to-noise ratio.
Both groups used a conventional Fourier transform infrared spectrometer (FTIR) equipped with a broadband thermal source, the radiation was focused near the tip of a probe that was in contact with a sample. The Lancaster group obtained spectra by detecting the absorption of infrared radiation using a temperature sensitive thermal probe.