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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: dermevalsenra on December 08, 2005, 01:48:53 PM

Title: Phosphorus and Nitrogen impacts
Post by: dermevalsenra on December 08, 2005, 01:48:53 PM

What kind of impacts can the elements Phosphorus and Nitrogen bring to a river or water body when dumped in them? How does that polluting process occur?

Title: Re:Phosphorus and Nitrogen impacts
Post by: Alberto_Kravina on December 09, 2005, 08:39:58 AM

One impact is the growth accelleration of water plants. Phopsphates and nitrates (very common substances in fertilizers) accellerate the growth process of water plants. As a result, the water plants need more oxygen. =>More and more fish die because they don't have oxygen to breath.

Title: Re:Phosphorus and Nitrogen impacts
Post by: Beatles on December 10, 2005, 07:31:44 AM

Wich phosphates are there in the fertilizers?

Title: Re:Phosphorus and Nitrogen impacts
Post by: Alberto_Kravina on December 10, 2005, 07:38:14 AM

The most common phosphates in fertilizers are: Potassium dihydrogenphosphate KH₂PO₄, ammonium dihydrogenphosphate (NH₄)H₂PO₄, sodium hydrogen phosphate NaHPO₄ and calcium phosphate Ca₃(PO₄)₂

Title: Re:Phosphorus and Nitrogen impacts
Post by: Borek on December 10, 2005, 07:42:14 AM

Quote from: Alberto_Kravina on December 10, 2005, 07:38:14 AM

sodium hydrogen phosphate NaHPO₄

???

Title: Re:Phosphorus and Nitrogen impacts
Post by: Alberto_Kravina on December 10, 2005, 10:31:44 AM

Of course it is Na₂HPO₄  :D