Molecular Compounds of Importance in Environmental Microbiology

Carbon Cycle

CO2 Carbon Dioxide

CH4 Methane

CaCO3 Calcium Carbonate (limestone)

CO32- Carbonate Ions

Nitrogen Cycle

N2 Molecular Nitrogen

NH3 Ammonia

NH4+ Ammonium Ion

NO2- Nitrite Ion

NO3- Nitrate Ion

N2O Nitrous Oxide

Sulfur Cycle

So Elemental Sulfur

H2S Hydrogen Sulfide

SO42- Sulfate Ion

-SH Sulfhydryl Groups of Proteins

SO2 Sulfur Dioxide

H2SO3 Sulfurous Acid (acid rain)

Phosphorous Cycle

PO43- Phosphate Ion

Ca(H2PO4)2 Monobasic Calcium Phosphate

Ca2HPO4 ·2H2O Dibasic Calcium Phosphate

Ca3(PO4)2 Tribasic Calcium Phosphate

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