Pollutant Information: Sodium
Category: Heavy metals and base cations
Base cations such as sodium are important in the environment because deposition has an impact upon surface pH, causing an increase in alkalinity, thereby buffering or neutralising the effects of acidity generated by sulphur and nitrogen. It is for this reason these emissions are of interest, rather than their negative impacts upon human health or ecosystems. Sinter production is responsible for the greatest single emission of sodium with 34% of total emissions in 2014. Domestic, industrial and power station use of coal contributed 8%, 10% and 11% respectively.
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