Monitoring of nitrate ions in leafy vegetables and in the environment of Aitoloakarnania region: Factors determining nitrate accumulation in leafy vegetables
Abstract
Nitrates are ubiquitous within environmental systems. Elevated nitrates concentrations can cause methemoglobinemia (blue baby syndrome) and several types of cancer due to the potential toxicity of their compounds (nitrosamines). For this reason European Union has established maximum nitrates levels in order to protect human health. The aim of this PhD thesis was the systematic monitoring of nitrate distribution in Aitoloakamania region (water, plants, soil), as well as the factors which can decrease nitrate accumulation in leafy vegetables. - In all samples, the determined nitrate concentrations were low and with the limits of E.U. This can be attributed to intensive and longtime period of sunshine at the area, as I well as to the great water potential of the region (rainfalls, water resources). Moreover, the factors which were found to decrease nitrate accumulation in leafy vegetables were the type of fertilizer (organic cultivation) and the sun intensity. - Furthermore, Cd²⁺ binding ...
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