In order for it to get cloudy or rain, first moisture has to condense around particulate matter in the air called aerosols, and volatile organic compounds made by trees can be precursors to the kinds of tiny particles that eventually make clouds and rain.
Many products release molecules that drift through the air. Some can potentially cause health problems. Researchers now report a personal air-sampling system that can detect an unprecedented range of these compounds from a special badge or pen. They will present their results at ACS Fall 2021.
Emitted as gases from certain solids or liquids, volatile organic compounds include a variety of chemicals, and many are associated with adverse health effects so detecting VOCs simply, quickly, and reliably is valuable for several practical applications. In Review of Scientific Instruments, researchers describe a device designed to analyze air samples containing various VOCs. The device inhales a sample, enabling the sensors within its aluminum gas chamber to analyze and respond in real situations.
Joan W. Bennett, a Distinguished Professor of plant biology and pathology at Rutgers University–New Brunswick, has been elected to the American Academy of Arts & Sciences. She joins neurosurgeon and CNN medical correspondent Sanjay Gupta, NASA’s Goddard Space Flight Center atmospheric scientist Ann Thompson and media entrepreneur and philanthropist Oprah Winfrey.
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Researchers found that bacteria essential to ripening cheese can sense and respond to compounds produced by fungi in the rind and released into the air, enhancing the growth of some species of bacteria over others. The make-up of the cheese microbiome is critical to flavor and quality of the cheese.