Table 6.1 Some common nitrogen species and the
oxidation state of nitrogen in the compounds.
Species
Name
Oxidation
State
NH3
NH+4
(NH2)2CO
N2H4
NH2OH
N2
N2O
NO
HNO2
NO–2
NO2
HNO3
NO–3
Ammonia
Ammonium ion
Urea
Hydrazinea
Hydroxylaminea
Molecular nitrogen (N2 gas)
Nitrous oxide
Nitric oxide
Nitrous acid
Nitrite anion
Nitrogen dioxide
Nitric acid
Nitrate ion
N–3
N–3
N–3
N–2
N–1
N0
N+1
N+2
N+3
N+3
N+4
N+5
N+5
a
These compounds are synthetic.
Environmental and Low Temperature Geochemistry, First Edition. Peter Crowley Ryan.
© 2014 Peter Crowley Ryan. Published 2014 by John Wiley & Sons, Ltd.
Companion Website: www.wiley.com/go/ryan/geochemistry
Table 6.2 Examples of sulfur species and the oxidation states of sulfur in these compounds, presented from
most-reduced, S–2-bearing species to the most-oxidized, sulfate-bearing species.
Species
PbS
ZnS
CuFeS2
HgS
(CH3)2S
(CH3)2SO
(CH3)2S+CH2CH2COO–
C7H14N2O2S
H2S
COS or OCS
CS2
FeS2
FeAsS
S8
SO
H2SO3
SO–3
SO2
SF6
SO3
BaSO4
CaSO4 2H2O
KFe+3
3 (OH)6(SO4)2
H2SO4
SO–2
4
a
These compounds are synthetic.
Name
Oxidation State(s) of sulfur
Galena (lead sulfide)
Sphalerite
Chalcopyrite
Cinnabar
Dimethyl sulfide (DMS)
Dimethylsulfoxide (DMSO)
Dimethylsulfoniopropionate (DMSP)
Aldicarba
Hydrogen sulfide
Carbonyl sulfide
Carbon disulfide
Pyrite (iron sulfide)
Arsenopyrite
Elemental sulfur
Sulfur monoxide
Sulfurous acid
Sulfite anion
Sulfur dioxide
Sulfur hexafluoridea
Sulfur trioxide
Barite (barium sulfate)
Gypsum (calcium sulfate)
Jarosite
Sulfuric acid
Sulfate anion
S–2
S–2
S–2
S–2
S–2
S–2
S–2
S–2
S–2
S–2
S–2
(S2)–2
(AsS)–2
S0
S+2
S+4
S+4
S+4
S+6
S+6
S+6
S+6
S+6
S+6
S+6