The Effects of Ozone Deposition and Dissolved Organic Matter on Manganese Speciation in the Surface Ocean
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Despite the known reactivity of ozone (O_(3)) in water and ozone’s environmental importance in the atmosphere, there are relatively few studies published examining the chemistry of O_(3) in seawater. This study focused on developing a flow injection analysis (FIA) chemiluminescence system to measure Mn(II) in order to investigate the effect of O_(3) deposition to the sea surface on Mn speciation. Modifications to earlier FIA systems had to be made in order to accommodate the relatively high concentrations of Mn(II) (200 nmol/kg) in these experiments. Experiments were also conducted where seawater containing different concentrations of Mn(IV) particles and organic carbon were exposed to gas streams containing different levels of O_(3). Ozone was not found to affect the concentration of Mn(II) in seawater.
Smyth, Alison Michelle (2014). The Effects of Ozone Deposition and Dissolved Organic Matter on Manganese Speciation in the Surface Ocean. Master's thesis, Texas A & M University. Available electronically from