Gold Book Terms (1394) from the Analytical Chemistry Division (V)

absolute activation analysis 

absolute counting 

absolute full energy peak efficiency 

absolute photopeak efficiency 

absolute preconcentration 

absorbance matching 

absorbed dose 

absorbed electron coefficient 

absorbed electrons 

absorber 

absorption 

absorption pathlength 

acceleration energy 

accelerator 

accuracy 

acid–base indicator 

acid–base titration 

acidimetric titration 

acidity constant 

activation analysis (nuclear) 

activation cross-section 

activation 

activator 

active medium 

active solid 

active species 

activity 

additive 

additivity 

adsorbate 

adsorbent 

adsorption 

adsorption chromatography 

adsorption current 

adsorption indicator 

adsorption isotherm 

affinity chromatography 

after mass analysis 

ageing of precipitate 

aliquot 

alternating current 

alternating voltage 

amphiprotic (solvent) 

amplification reaction 

amplitude of alternating current 

amplitude of alternating voltage 

analogue to digital converter (pulse) 

analyte 

analytical instrument 

analytical intercomparison 

analytical portion 

analytical pyrolysis 

analytical quality control 

analytical radiochemistry 

analytical sample 

analytical solution 

Anger camera 

anion exchange 

anion exchanger 

annihilation 

anti-Compton γ-ray spectrometer 

anti-Stokes type radiation (fluorescence) 

anticircular elution 

antiparticle 

apex current 

apex potential 

appearance temperature 

applied potential 

area 

arithmetic mean 

artificial radioactivity 

ascending elution 

ashing 

assay 

assay kit 

asymmetry potential 

atomic fluorescence 

atomic laser 

atomic spectral lines 

atomization 

atomization surface temperature 

atomizer 

attenuation 

Auger effect 

Auger electron 

Auger electron spectroscopy 

Auger electron yield 

Auger yield 

auto-ionization 

autocatalytic reaction 

automation 

autoradiograph 

autoradiolysis 

auxiliary electrode 

avalanche photodiode 

average life 

average rate of flow 

α-decay