IUPAC Gold Book - Alphabetical index

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z all (6414 items)

π – π* state
π → π* transition
π → σ* transition
π-adduct
π-bond
π-complex
π-electron acceptor/donor group
P, M
packed column in chromatography
packing in column chromatography
paddlanes
pair attenuation coefficient in nuclear chemistry
pair correlation length, $ξ$ in thin films^quantity
pair production in nuclear chemistry
PAL
Pallmann effect
PAN-based carbon fibres
paraffin
parallel reactions
parallel-chain crystal in polymers
paramagnetic
parametric amplification
parametric processes
parent hydride
parent ion in mass spectrometry
Pariser–Parr–Pople (PPP) method
partial anodic (cathodic) current
partial charge exchange reaction
partial charge transfer reaction
partial decay constant in nuclear chemistry
partial digestion in spectrochemical analysis
partial isotherm (or individual isotherm) in surface chemistry
partial kinetic current in electrochemistry
partial least squares (PLS)
partial mass density, $ρ B$ ^quantity
partial microscopic diffusion control (encounter control)
partial molar Gibbs energy
partial molar quantity
partial order of reaction^quantity
partial pressure
partial rate factor
partial specific volume, $v B$
partially draining
particle concentration in atmospheric chemistry
particle density in nuclear chemistry
particle induced X-ray emission analysis
particle scattering factor
particle scattering function
particle size distribution in atmospheric chemistry
particle size in atmospheric chemistry
particular property
particulate carbon
particulate gel
particulate matter in atmospheric chemistry
particulate sol
partition
partition chromatography
partition coefficient
partition constant, $K D o$ ^quantity
partition function
partition isotherm in chromatography
partition ratio, $K D$ ^quantity
partly open film
pascal ^unit
passivation in electrochemical corrosion
passivation potential in electrochemical corrosion
passive metal
passive sampler
passive state in electrochemical corrosion
Paterno–Büchi reaction
pattern recognition
paucidisperse system
Pauli exclusion principle
PDC
PDMR
peak analysis
peak area in chromatography
peak area method
peak base in chromatography
peak concentration (trace atmospheric component)
peak current
peak elution volume (time), $V ̄ R$ , $t ̄ R$ in column chromatography
peak enthalpimetry
peak fitting
peak height in chromatography
peak in chromatography
peak maximum in chromatography
peak potential
peak resolution, $R s$ in chromatography^quantity
peak widths in chromatography
pectins
Peierls distortion
Peierls transition
pellicular packing in chromatography
penams
pendant chain
pendant group (side group)
penems
penetrant (permeant)
penetration depth
penicillins
Penning gas mixture
pentads in polymers
pentaprismo-
peptides
peptidoglycan
peptization
peptization in colloid chemistry
per acids
percent
percent diastereoisomer excess
percent enantiomer excess
percentage error
percentage exposed in metallic catalysts
percentage relative error, $e r$ (%)
percentage standard deviation, $s r$ (%), $σ r$ (%)
perfect network
perfect polymer network
perfectly polarized interphase
perfusion stationary phase (material) in liquid chromatography
pericyclic reaction
perikinetic aggregation in colloids
period, $T$ ^quantity
periodic copolymer
periodic copolymerization
periodic voltage
peripheral atom in organic reaction mechanisms
periplanar
periselectivity
peritectic reaction
peritectoid reaction
peritectoid temperature
permanent crosslink
permeability, $μ$ ^quantity
permeability of vacuum, $μ 0$ ^constant
permeate
permeation chromatography
permeation tube
permittivity, $ɛ$ ^quantity
permittivity of vacuum^constant
permselectivity
peroxides
peroxisome
peroxo compounds
peroxy acids
perpendicular effect
persistence length in polymers
persistent
perspective formula
perstraction
perturbation theory
perturbed dimensions in polymers
pervaporation
pesticide
pesticide residue
peta^{SI unit prefix}
petroleum coke
petroleum pitch
pH^quantity
pH glass electrode
pH gradient in electrophoresis
pH standard
pH-rate profile
pH_0.5 or pH_1/2 in solvent extraction
phantom chain behaviour
pharmacodynamics
pharmacokinetics
phase
phase domain
phase fluorimetry
phase I reaction of biotransformation
phase II reaction of biotransformation
phase interaction
phase inversion
phase ratio, $β$ in chromatography^quantity
phase ratio, $r$ in liquid-liquid distribution^quantity
phase ripening
phase rule
phase separation
phase transition
phase-space theory
phase-transfer catalysis
phenolates
phenols
phenomenological equation
phenonium ions
phenotype
phenoxides
pheromone
phonon
phosphanes
phosphanylidenes
phosphatidic acids
phosphazenes
phosphine oxides
phosphines
phosphinic acids
phosphinidenes
phosphinous acids
phospho
phosphoglycerides
phospholipids
phosphonic acids
phosphonitriles
phosphonium compounds
phosphonium ylides
phosphono
phosphonous acids
phosphoramides
phosphoranes
phosphoranyl radicals
phosphorescence
phosphorescence lifetime
phosphorimetry
phosphoroscope
phosphorus ylides
phosphorylation
phosphylenes
photo-Bergman cyclization
photo-Claisen rearrangement
photo-curing
photo-elastic polymer
photo-Fries rearrangement
photoacoustic detector
photoacoustic effect
photoacoustic spectroscopy
photoadsorption
photoaffinity labelling (PAL)
photoassisted catalysis
photobiology
photocatalysis
photocatalyst
photocatalytic cell
photochemical curing
photochemical detector
photochemical equivalence
photochemical funnel
photochemical hole burning
photochemical nitrogen extrusion
photochemical reaction
photochemical reaction path
photochemical smog
photochemical yield
photochemistry
photochromism
photoconductive detector
photoconductivity
photocrosslinking
photocurrent yield
photocyclization
photocycloaddition
photodecarbonylation
photodecarboxylation
photodeconjugation
photodegradation
photodesorption
photodetachment of electrons
photodiode
photodiode array
photodynamic effect
photoelectric attenuation coefficient
photoelectric detector
photoelectric peak
photoelectrical effect
photoelectrochemical cell
photoelectrochemical etching
photoelectrochemistry
photoelectrolytic cell
photoelectron spectroscopy (PES)
photoelectron yield
photoemissive detector
photoexcitation
photogalvanic cell
photohydration
photoimaging
photoinduced electron transfer
photoinduced polymerization
photoinitiation
photoionization
photoionization detector in gas chromatography
photoisomerization
photoluminescence
photoluminescent polymer
photolysis
photometry
photomultiplier tube
photon
photon activation
photon counting
photon echo
photon emittance^quantity
photon exitance, $M p$ ^quantity
photon exposure, $H p$ ^quantity
photon flow, $Φ p$ ^quantity
photon fluence, $H p , o$ , $F p , o$ ^quantity
photon fluence rate, $E p , o$ ^quantity
photon flux, $q p$ , $Φ p$ ^quantity
photon irradiance, $E p$ ^quantity
photon number, $N p$ ^quantity
photon quantities
photon radiance, $L p$ ^quantity
photooxidation
photooxygenation
photopeak
photophoresis
photophosphorylation
photophysical processes
photopolymerization
photoreaction
photorearrangement
photoreduction
photoresist
photoselection
photosensitive polymer
photosensitization
photosensitizer
photostationary state
photosynthesis
photosystem
photothermal effect
photothermography
phototransistor
photovoltaic cell
phthaleins
phthalides
physical adsorption
physical network
physical quantity (measurable quantity)
physisorption (physical adsorption)
phytotoxicant
pico^{SI unit prefix}
picrates
PICT
piezoelectric polymer
piezoluminescence
pile-up in radioanalytical chemistry
PIN (p-intrinsic-n) diode
PIN semiconductor detector
pinacols
pinocytosis
pitch
pitch-based carbon fibres
pitting corrosion
Pitzer strain
planar chirality
planar chromatography
planar film
planar intramolecular charge transfer (PICT)
planar stereoisomerism
Planck constant
plane angle
plasma desorption ionization in mass spectrometry
plasma in biology
plasma in spectrochemistry
plasmid
plastic flow
plastic transition
plate height, $H eff$ in chromatography
plate number, $N$ in chromatography^quantity
plateau border in surface chemistry
PLED
pleiotropic gene
ploidy
plug-flow in catalysis
plumbylenes
plumbylidenes
plume in atmospheric chemistry
plus, minus
pneumatic detector
point group
point of zero charge (p.z.c.)
poise ^unit
poison in catalysis
Poisson distribution
polar aprotic solvent
polar effect
polar solvent
polarity
polarizability^quantity
polarization, $P$ ^quantity
polarization error in spectrochemical analysis
polarization, $ζ$ in electrochemistry^quantity
polarized interphases
polarography
polaron
pollution (pollutant)
pollution rose
polyacid
polyaddition
polyampholyte
polybase
polybetaine
polychromator
polycondensation
polycrystalline graphite
polycyclic system
polydent
polydisperse medium
polydisperse polymer
polyelectrolyte
polyelectrolyte complex
polyelectrolyte gel
polyelectrolyte network
polyfunctional catalysis
polygranular carbon
polygranular graphite
polyhedral symbol
polyhedranes
polyions
polyketides
polymer
polymer alloy
polymer blend
polymer catalyst
polymer compatibilizer
polymer complex formation
polymer complexation
polymer composite
polymer crystal
polymer crystallite
polymer cyclization
polymer degradation
polymer drug
polymer electrolyte
polymer functionalization
polymer gel
polymer membrane
polymer molecule
polymer network
polymer phase-transfer catalyst
polymer reactant
polymer reaction
polymer reagent
polymer solvent
polymer sorbent
polymer support
polymer surfactant
polymer-clay composite
polymer-clay hybrid
polymer-derived ceramic (PDC)
polymer-metal complex
polymer-poor phase
polymer-rich phase
polymer-supported catalyst
polymer-supported reaction
polymer-supported reagent
polymerase chain reaction (PCR)
polymeric
polymeric electrolyte
polymeric inner salt
polymeric sol
polymeric stationary phase (material) in liquid chromatography
polymerization
polymer–polymer complex
polymer–solvent interaction
polymolecularity correction
polymorphic transition
polypeptides
polyprenols
polyquinanes (polyquinenes)
polysaccharides
polysulfanes
polysulfides
polytopal rearrangement
polytypic transition
pooled relative standard deviation
pooled standard deviation
population inversion
pore size distribution
Porod–Kratky chain in polymers
porosity
porous-layer open-tabular (PLOT) column in chromatography
porphyrinogens
porphyrins
position-sensitive photomultiplier tube
positive feedback
positive ion in mass spectrometry
positron
positronium
post-column derivatization in chromatography
post-filter effect in luminescence spectroscopy
postprecipitation
potential at the point of zero charge (p.z.c.)
potential energy, $E p$ , $V$ ^quantity
potential of a cell reaction
potential temperature
potential-determining (p.d.) ions
potential-energy profile
potential-energy (reaction) surface
potentiation
potentiometer
potentiometric detection method in electrochemical analysis
potentiometric selectivity coefficient
power, $P$ ^quantity
power level
pre-association
pre-ceramic
pre-ceramic material
pre-equilibrium in solvent extraction
pre-equilibrium (prior equilibrium)
pre-exponential factor, $A$ ^quantity
pre-filter effect in luminescence spectroscopy
pre-gel regime
pre-gel state
pre-polymer
pre-polymer molecule
pre-reactive complexes
precipitation
precipitation fractionation of polymers
precipitation from homogeneous solution (pfhs) in analysis
precipitation in sol-gel processing
precipitation titration
precision
precision of a balance
precision of a weighing
precision of indication of a balance
preconcentration coefficient of a desired microcomponent in trace analysis
preconcentration in trace analysis
precursor complex
precursor in radioanalytical chemistry
precursor ion in mass spectrometry
predissociation
preferential sorption in polymers
premium coke
premix burner in flame spectroscopy
prenols
prepolymer
prepreg
pressure, $p$ ^quantity
pressure flow
pressure gradient correction factor in gas chromatography
pressure jump
pressure-induced transition
pressure-sensitive detector
pretreatment of a catalyst
primary crystallization
primary current distribution
primary electrons (pe) in in situ microanalysis
primary excitation of X-rays
primary isotope effect
primary kinetic electrolyte effect
primary kinetic isotope effect
primary mixture
primary particle in catalysis
primary pH standards
primary photochemical process (primary photoreaction)
primary (photo)process
primary (photo)product
primary pollutant in atmospheric chemistry
primary sample
primary standard
primary structure
primary structure of a segment of a polypeptide
primitive change
principal group
principal ion in mass spectrometry
principal moments of inertia
principle of least nuclear motion
principle of microscopic reversibility
principle of minimum structural change
prior distribution, $P 0$
prior equilibrium
priority
pro-E, pro-Z
pro-R, pro-S
probability density, $P$
probability, $P$
probe in biotechnology
process
prochirality
prochirality centre
product
product development control
product ion
product state distribution
product-determining step
productivity, $r$ in biotechnology^quantity
progenitor ion in mass spectrometry
program
programmed-flow chromatography (flow programming)
programmed-pressure chromatography (pressure programming)
programmed-temperature chromatography (temperature programming)
projection formula
prolate trochoidal mass spectrometer
promoter (gene technology)
promoter in catalysis
promotion
prompt coincidence
prompt neutrons
propagating reaction
propagation
propellanes
property
prophage
proportional counter
proportional counter tube
proportional gas-scintillation counter
proprochirality
pros in histidine nomenclature
prostaglandins
prostanoids
prosthetic group
proteases
protected lyophobic colloid
protection of a reactive group
protective action in colloid chemistry
protein engineering
proteins
proteoglycan
proteome
protic
protide
protio
protium
protogenic (solvent)
protolysis
proton
proton affinity
proton charge^constant
proton magnetic moment^constant
proton magnetogyric ratio
proton number^quantity
proton rest mass^constant
proton transfer reaction
protonated molecule in mass spectrometry
protonation constant
protophilic (solvent)
protoplast
prototrophs
prototropic rearrangement (or prototropy)
pseudo acids
pseudo bases
pseudo rate constant
pseudo-asymmetric carbon atom
pseudo-axial
pseudo-catalysis
pseudo-co-oligomer
pseudo-copolymer
pseudo-equatorial
pseudo-first-order rate coefficient^quantity
pseudo-first-order reaction
pseudo-unimolecular
pseudo-zero-order reaction
pseudohalogens
pseudomolecular rearrangement
pseudopericyclic
pseudorotation
pseudoureas
psychosine
psychrometric hygrometer
psychrometry
puffing
puffing inhibitor
pulsatance^quantity
pulse amplitude analyser
pulse amplitude selector
pulse duration in electroanalytical chemistry
pulse height analyser
pulse reactor in catalysis
pump-dump-probe technique
pump-probe technique
purine bases
pyramidal inversion
pyranoses
pyrimidine bases
pyro
pyroelectric detector
pyrolysis
pyrolysis-gas chromatography
pyrolytic carbon
pyrolytic graphite
pyrromethenes