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A method for the determination of nitrates in water supply sources consists in preliminary addition of (1.0-2.0)10M of peroxydisulfate to the sample tested, with boiling at pH 2-3 during 4-6 min, addition of ethyl alcohol, at molar ratio peroxydisulfate:ethyl alcohol equal to 1:( 40梅50)...
Our water supply is becoming polluted withnitrates. 我们的水源正受到硝酸盐的污染. 《简明英汉词典》 Nitratesare used as preservatives in food manufacture. 硝酸盐在食品加工业中被用作防腐剂。 辞典例句 Nitrous esters can react with alkyl peroxides to yield alkylnitrates. ...
‘closed-loop’ system,nitrate-richwater from the fish tanks irrigate vegetables in nearby beds. thisbigcity.net thisbigcity.net 庫克群島內最大島嶼拉羅東加(Rarotonga)正在實驗養耕共生模式,結合漁產養殖與水耕農業,在這種 碳中立的「封閉迴圈」系統內,魚缸裡富含硝酸鹽的水用來灌溉蔬菜,以魚的排泄物滋養...
While not fish, University studies in Cattle show nitrate levels in water over 221 ppm to be harmful or even fatal, so I sure would NOT want my fish kept at nitrate levels approaching this number. This said, if your nitrates are not always increasing (which constantly increasing nitrates can...
nitrates is a catalytic process that breaks them completely apart into nitrogen and oxygen, or in our case, nitrogen and water because we add a little hydrogen," he said. "More than 75 percent of Earth's atmosphere is gaseous nitrogen, so we're really turning nitrates into air and water....
The invention relates, in particular, to a process for treating a liquid medium loaded with nitrates via a chemical route that mainly comprises a step of electrolysis of the liquid
How does water enter the atmosphere in the water cycle? How does water cycle through the environment? How do organisms grow? How did the biosphere form? How does the water cycle renew Earth's supply of freshwater? How is an aquifer recharged? How does oxygen lead to ocean acidification? Ho...
Of course, lead can also be found in tap water for reasons outside of lead piping. Sometimes lead naturally seeps into a water supply from the ground. At other times, industrial spills may contribute to high amounts of lead in the water system. In any case, high levels of lead can ...
Known biological processes consists of contacting (e.g. in a reactor) the potable water to be denitrated with microorganisms capable of reducing nitrates. See, Denitrification biologique. Usine de Traitment d'Eragny/-Oise (Philipot J. M., Chaffange F., Pascal O., Water Supply (1985) 3:...