SO<sub>2</sub> emissions from fossil fuel power plants can have significant impacts on human health and ecosystems.
Consequently, numerous techniques are in use to monitor these emissions, in order to comply with environmental
legislations. Here we highlight the correlation between SO<sub>2</sub> emissions rate and the S contained in fuel used in power
plant. We obtained a maximum of 1.3 kg.s<sup>-1</sup> of SO<sub>2</sub> emissions rate and a minimum of 0.4 kg.s<sup>-1</sup> corresponding
respectively to 2.9 % and 1.2 % of S contained in fuel. Measurements also indicate that high concentration of S<sub>O2</sub>
released from the Noumea 121 MW power plant is rapidly diluted in the first 10 minutes, corresponding to 3-4 km
distance from the source downwind. Thus inhabitants living within the 3-4 km radius are potentially exposed to power