Page 15 - Hydrogeology Principles and Practice

HYDA01 12/5/05 5:44 PM Page xiv

xiv Symbols and Abbreviations

Symbol Description Units

CFC chlorofluorocarbon
10
Ci curie (older unit of radioactivity; 1 Ci = 3.7 × 10 disintegrations per second)
COD chemical oxygen demand mg L −1
2 −1
D hydraulic diffusivity m s
2 −1
D hydrodynamic dispersion coefficient m s
2 −1
D* molecular diffusion coefficient m s
DIC dissolved inorganic carbon mg L −1
DNAPL dense, non-aqueous phase liquid
DOC dissolved organic carbon mg L −1
d mean pore diameter m
dh
hydraulic gradient
dl
E o standard electrode potential V
EC electrical conductivity S cm −1
Eh redox potential V
e void ratio
e- electron
eq chemical equivalent (see Box 3.1) eq L −1
4
−1
F Faraday constant (9.65 × 10 C mol )
F Darcy–Weisbach friction factor
f c infiltration capacity cm h −1
f t infiltration rate cm h −1
f OC weight fraction organic carbon content
G Gibbs free energy kJ mol −1
g gravitational acceleration m s −2
g gram (mass)
(g) gas
H depth (head) of water measured at a flow gauging structure m
H enthalpy kJ mol −1
h hydraulic head m
I ionic strength mol L −1
⎛ dh⎞
i hydraulic gradient ⎜ ⎟
⎝ dl ⎠
IAEA International Atomic Energy Agency
n −n
IAP ion activity product mol L
J joule (energy, quantity of heat)
n −n
K equilibrium constant mol L
K (hydraulics) hydraulic conductivity m s −1
K (temperature) kelvin
K d partition or distribution coefficient mL g −1
K f fracture hydraulic conductivity m s −1
3
K H Henry’s law constant Pa m mol −1
K OC organic carbon-water partition coefficient
K OW octanol-water partition coefficient
K s selectivity coefficient
n −n
K sp solubility product mol L
k i intrinsic permeability m 2
L litre (volume)
LNAPL light, non-aqueous phase liquid
l length m
MNA monitored natural attenuation
m mass kg
mol amount of substance (see Box 3.1)