Emerging investigator series: an instrument to measure and speciate the total reactive nitrogen budget indoors: description and field measurements

Abstract

Reactive nitrogen species (Nr), defined here as all N-containing compounds except N2 and N2O, have been shown to be important drivers for indoor air quality. Key Nr species include NOx...

Indoor and outdoor air quality impacts of cooking and cleaning emissions from a commercial kitchen

“…As shown in Table S1, † there were nearly always multiple dishes cooked at the same time, and in some cases, despite no logged cooking occurring in the main kitchen, cooking-derived emissions were observed coming from food preparation in the customer-facing kitchen. It is therefore challenging to attribute high ion signals to specic dishes prepared, but we note that the bulk of the cooking for the day was performed mid-morning through mid-aernoon, which corresponds to the cooking events with the highest signals (e.g., event 8,22,26,27,29,55,66).…”

“…Other gas-phase instruments sub-sampled off of this gas-phase inlet, including a chemiluminescent nitrogen oxide analyzer (EC9841, American Ecotech), a non-dispersive infrared carbon dioxide sensor (K30, Sensair), a novel instrument to measure total reactive nitrogen, 27 and a proton transfer reaction mass spectrometer (PTR-MS). This work focuses on gas-phase measurements from the PTR-MS.…”