释义 |
nitrateChemistry noun /ˈnʌɪtreɪt /A salt or ester of nitric acid, containing the anion NO3− or the group —NO3: preserved meat and vegetables contain nitrates [mass noun]: fish-fry populations are damaged by nitrate...- Many nitrates are ionic in nature, but heavy metal nitrates and anhydrous nitrates have covalently bonded nitrate groups.
- It occurs in all kinds of minerals, such as oxides, carbonates, nitrates, sulfates, and phosphates.
- By depositing proteins as monolayers onto gold colloids, the aim will be to develop biosensors for nitrate and nitric oxide with detection capabilities approaching those of natural bacterial cells.
verb /nʌɪˈtreɪt / [with object]Treat (a substance) with nitric acid, especially so as to introduce nitro groups: (as adjective nitrated) nitrated polycyclic aromatic hydrocarbons (as adjective nitrating) a powerful nitrating agent...- When nitrobenzene is nitrated with nitric and sulfuric acids, for example, 93 percent of the substituted groups end up at meta positions.
- Thus NO metabolized to nitrosothiols and to nitrated amino acids was not detected.
- Biodiesel reduces emissions of unburned hydrocarbons, carbon monoxide, sulfates, polycyclic aromatic hydrocarbons, nitrated polycyclic aromatic hydrocarbons and particulates.
Derivatives nitration /nʌɪˈtreɪʃ(ə)n / noun ...- In the mining industry, the production of TNT is made possible by the electrophilic nitration of toluene (methyl benzene).
- The added ethyl group makes ethylbenzene about 25 times more reactive to nitration than benzene.
- Interaction of Cl 2 with oxides of nitrogen may also occur, causing the chlorination and nitration of various amino acid residues, particularly tyrosine.
Origin Late 18th century: from French (see nitre, -ate1). |