Convenient environmentally friendly on-site quantitative analysis of nitrite and nitrate in seawater based on polymeric test kits and smartphone application

These days, nitrate (NO3–) and nitrite (NO2–) in aquatic ecosystems have elevated as a result of varied anthropogenic actions resulting in deterioration of the ecosystem and might speed up eutrophication. A Griess reagent-doped hydrogel check package and a zinc powder-doped starch movie had been thus developed for on-site quantitative evaluation of nitrate and nitrite. A

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