HCFCs hydrochlorofluorocarbons
HCH hexachlorocyclohexane
hn photon of light
IAP ion activity product
IGBP International Geosphere–Biosphere Programme
IPCC Intergovernmental Panel on Climate Change
J joule (energy, quantity of heat)
K kelvin (temperature)
l litre (volume)
(l) liquid
ln natural logarithm
log 10 base 10 logarithm
m metre (length)
M a third body
MSA methanesulphonic acid
N neutron number
n an integer
NAPL non-aqueous phase liquid
Pa pascal (pressure)
PAH polycyclic aromatic hydrocarbon
PAN peroxyacetylnitrate
PCBs polychlorinated biphenyls
PCDD polychlorinated dibenzo-p-dioxin
PCDF polychlorinated dibenzo-p-furan
PCP pentachlorophenol
PM particulate matter
POP persistent organic pollutant
ppb parts per 10^9
ppm parts per million
r ionic radius
S entropy (J mol-^1 K-^1 )
s second (time)
(s) solid
SOM soil organic matter
SRB sulphate reducing bacteria
SVOC semi-volatile organic compound
T absolute temperature (kelvin)
TBT tributyl tin
TCA tricarboxylic acid
TDIC total dissolved inorganic carbon
UNESCO United Nations Educational, Scientific and Cultural
Organisation
USDA United States Department of Agriculture
UV ultraviolet (radiation)
V volt (electrical potential)
V volumexx Symbols and Abbreviations