Volatile organic compounds (VOCs) are key drivers in atmospheric chemistry processes that also contribute to climate change. The main sources of VOCs include emissions from vegetation, biomass burning, and human or anthropogenic activities. VOCs overall can have warming effects on the climate through ...
Moreover, volatile compounds may also be lost from an oil either to the atmosphere or due to absorption by packaging materials (Fiselier et al., 2005). This chapter examines the differences between Australian and other oils, principally European, in terms of the volatile fraction (Kalua et ...
(1)A. 细节理解题.根据第一段以及第二段"Vitamins are organic compounds required by humans as nutrients in small amounts known as micronutrients. The term vitamin is from the Latin words "vital" and "amine"(胺), because vitamins are necessary for life and were originally thought to be amines...
《organic compounds》课件 organiccompounds ——hydrocarbons Theterm"organic"appearstohavebeenusedforthefirsttimeabout1777andwasappliedtothosematerialsoccurringinorderivedfromlivingorganisms.Accordingly,suchsubstancesasstarch,alcohol,andureawereclassifiedasorganic,forstarchisproducedbylivingplants,alcoholisaproductof...
Furthermore, the vast majority of these known toxic compounds are not regulated. When considering the contributions of synthetic industrial chemicals and pharmaceuticals to the mix in addition to disinfection byproducts from the chlorination of natural humic substances, there is truly a witch's brew ...
compounds in burdock as potential cancer preventatives. Burdock is already an ingredient in some folk remedies used to treat existing cancers. Pick the tender leaf stalks in spring and early summer, and harvest one-year-old burdock roots from late summer through winter. It's important to ...
Volatile organic compounds (VOCs) found in indoor air investigations are related to combustion and come from sources such as building materials, paints, furnishing materials, tobacco smoke, personal care and beauty products, and household and cleaning materials [1,2]. Continuous exposure to indoor ai...
Volatile organic compounds (VOCs) are considered one of the significant contributors to air pollution because they are toxic, difficult to remove, come from a wide range of sources, and can easily cause damage to the environment and human health. There i
Source apportionment of volatile organic compounds (VOCs) in aircraft cabins. Build Environ 2014; 81: 1-6.Chao Wang, Xudong Yang, Jun Guan, Zheng Li, Kai Gao. Source apportionment of volatile organic compounds (VOCs) in aircraft cabins. Building and Environment, 2014, (81): 1-6....
Volatile organic compounds including hydrocarbons, halogenated compounds and other hazardous and toxic chemicals are removed from air streams by contacting the air with a suspension of tiny aqueous dr