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 ...
1Vitamins 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. As most of the vitamins cannot be pro...
《organic compounds》课件 organiccompounds ——hydrocarbons Theterm"organic"appearstohavebeenusedforthefirsttimeabout1777andwasappliedtothosematerialsoccurringinorderivedfromlivingorganisms.Accordingly,suchsubstancesasstarch,alcohol,andureawereclassifiedasorganic,forstarchisproducedbylivingplants,alcoholisaproductof...
4.(Chemistry) of, relating to, or belonging to the class of chemical compounds that are formed from carbon:an organic compound. Compareinorganic2 5.constitutional in the structure of something; fundamental; integral 6.of or characterized by the coordination of integral parts; organized ...
【题目】阅读理解Carbon is a chemical element which is present in organic compounds that make us organisms.plants as well as fossil. It is a vial component of the greenhouse gas CO2, the highest percentage of the global warning gas in the atnosphere.These Green House Gases (GlIGs) along ...
(Jimenez et al., 2006). Nevertheless, the definition of a volatile compound in food science is largely methodological and asgas chromatography(GC) is historically the most significant technique for measurement of volatiles, by default ‘volatiles’ has come to mean compounds most amenable to ...
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
The dyeing and printing of conventional cotton fabrics often use compounds of iron, tin, potassium, VOCs and solvent-based inks containing heavy metals, benzene, and organochlorides that require large quantities of water to wash out the dye residues. This waste water is polluted by these heavy ...
Source apportionment of volatile organic compounds (VOCs) in aircraft cabins. Build Environ 2014; 81: 1-6.Wang, C. , Yang, X. , Guan, J. , Li, Z. and Gao, K. ( 2014b ) Source apportionment of volatile organic compounds (VOCs) in aircraft cabins , Build. Environ. , 81 , 1 –...
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