When researchers want to uncover what atoms make up a material, they turn to a number of tried-and-true spectroscopy methods. Spectroscopy works by shining a specific type of light onto a substance ...

The spectrum of a substance — how it interacts with light — provides fundamental insight into its composition. A large number of molecules is typically required to obtain a detectable light-absorption ...

Near-infrared spectroscopy, known as NIR spectroscopy or NIRS, is a long-established analytical technique. For over 30 years, it has proven to be a fast and reliable method for measuring chemical and ...

Nitrite (NO₂⁻) plays a dual role as both an essential intermediate in the global nitrogen cycle and a potential health hazard when accumulated above regulatory limits in water, food or biological ...