α (alpha), β (beta) α- (β-, γ-) ray spectrometer α-addition (alpha-addition) α-cleavage (alpha-cleavage) α-decay (alpha-decay) α-effect α-elimination α-expulsion in photochemistry α-oxo carbenes α-particle (alpha-particle)
'A' value -factorquantity ab initio quantum mechanical methods abatement in atmospheric chemistry abeo- abiological abiotic abiotic transformation absolute activation analysis absolute activity, quantity absolute configuration absolute counting in radioanalytical chemistry absolute electrode potential absolute full energy peak efficiency absolute lethal concentration ( )quantity absolute lethal dose ( )quantity absolute photopeak efficiency absolute preconcentration in trace analysis absorbance, quantity absorbance matching in spectrochemical analysis absorbed dose of a substance absorbed dose, of radiation absorbed electron coefficient in in situ microanalysis absorbed electrons in in situ microanalysis absorbed (spectral) photon flux densityquantity absorbed (spectral) radiant power densityquantity absorber absorptance, quantity absorption absorption coefficient absorption coefficient in biology absorption cross-section, quantity absorption factor absorption intensity absorption line absorption pathlength of a sample cell absorption spectrum absorptivity abstraction abstraction process in catalysis abundance sensitivity in mass spectrometry ac accelerating voltage (high voltage, ) scan in mass spectrometry acceleration, quantity acceleration energy in in situ microanalysis acceleration of free fall, quantity accelerator in solvent extraction acceptable daily intake ( )quantity acceptor number ( )quantity accommodation coefficient accretion in atmospheric chemistry accuracy of a measuring instrument accuracy of measurement acenes acetals acetogenins acetonides acetylene black acetylenes acetylides
Acheson graphite
achiral