Nitrogen
ammonia

Nitrogen or #nitrate contamination of drinking and surface water poses serious health risks, and can result from agricultural runoff in rivers. It is often associated with algal blooms as well. Also see the topic #phosphate. ## Nitrogen: Nitrates, Nitrite, Ammonia, & Ammonium (moved from the [Common Water Contaminants page](/common-water-contaminants)) Nitrates, Nitrite, Ammonia, & Ammonium are all "fixed" forms of nitrogen available to living organisms, and represent different stages of nitrogen in the [nitrogen cycle.](https://en.wikipedia.org/wiki/Nitrogen_cycle) Nitrogen is a major limiting nutrient in plant growth-- when nitrates occur in large quantities in water from fertilizers, manure, or sewage runoff, they can cause algal blooms that create dead zones. Nitrates have also been linked to increased risks of [cancer, and complications with a number of diseases, including asthma](http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1310926/). The EPA limits drinking water concentrations of Nitrates to 10mg/L or lower, however, health threats can occur even at those levels. Ammonia (NH3) and ammonium ion (NH4+) are related chemically by an acid / base reaction: `NH3 + H+ <=> NH4+` The equilibrium between ammonia and ammonium is pH dependent, with the two species being at the same concentration only under fairly alkaline conditions, pH = 9.25. At neutral pH, the concentration of free NH3 is less than 1% that of NH4+. Since this is the case, the concentration of ammonia is usually not significant and can be determined from the concentration of ammonium and the pH. **** ## Questions Questions can be either frequently asked questions, or "next step" challenges we're looking to solve. [questions:nitrogen] ## Activities [activities:nitrogen] ...


Author Comment Last activity Moderation
Ag8n "Members of the community should be attentive for years. Not only to the fire location, but to many other locations, as well. If there is any data ..." | Read more » over 3 years ago
gercektakip "çok yazık " | Read more » over 3 years ago
zengirl2 "@stevie Wow, that is exciting. I'm almost picturing pomander balls of this stuff hanging around. " | Read more » about 6 years ago
stevie "Here's an answer coming in from Ann Marie Carlton who works with an Atmospheric Multiphase Chemistry Research Group at University of California, Ir..." | Read more » about 6 years ago
Bobibi "Yes. Biochar in manure, compost, and anaerobic digesters helps eliminate odors as well as reduce greenhouse gas emissions. " | Read more » about 6 years ago
stevie "Sorry:: A link would be helpful! here's the post @eustatic put up recently on this location: https://publiclab.org/notes/eustatic/11-14-2017/mapkni..." | Read more » over 6 years ago
stevie "yuck... Thanks for the updates on the site. Sad this is still a problem! " | Read more » over 6 years ago
eustatic "Here's a sample of Water from Bayou Chicot, I think, from 2016. I have to ask Howard. https://www.flickr.com/photos/healthygulf/26540680646/ I t..." | Read more » over 6 years ago
eustatic "Halter Marine is also a facility, a ship / paint stripping yard in the south of that oct 11th photo. here's a video of the plume of metal shavings..." | Read more » over 6 years ago
eustatic "Oh, hello post. Sadly, Barbara is still at it. MS Phosphates pollutes the water, as well, which is my subject area. Here is an overflight photo ..." | Read more » over 6 years ago
gretchengehrke "That's so great, Shan! " | Read more » almost 7 years ago
shanlter ""Did the Chinese government state the methods they would use to evaluate each of these parameters?" yes, they state the standard methods. "Also, di..." | Read more » almost 7 years ago
shanlter "Hi @gretchengehrke, sorry for responding late, I was in a temple with no internet access in the passing week. Yes, I've seen that page and I though..." | Read more » almost 7 years ago
gretchengehrke "@shanlter, this is great! Have you seen the spreadsheet on the www.publiclab.org/wiki/water-sensors page? There are some other options there listed..." | Read more » almost 7 years ago
stevie "I think there is a meeting next thursday with the community? I can't go, but I would really like to hear what happens. " | Read more » almost 10 years ago
geraldmc "Just got off the phone with Howard Page (of STEPS Coalition). Mississippi Phosphates has not followed up on their promise to provide the neighborho..." | Read more » almost 10 years ago
geraldmc "I sent Howard a note over the weekend, waiting to here back. -g " | Read more » almost 10 years ago
stevie "I don't know Howard... " | Read more » almost 10 years ago
eustatic "Mat, you're not kidding. danke. Stevie, do you know Howard? Would Howard know how to get this information? S " | Read more » almost 10 years ago
stevie "Interesting. Did you go to the meeting? Did you happen to hear what air monitor it is? " | Read more » almost 10 years ago
geraldmc "On Monday last week (06/23) the Concerned Citizens of Cherokee in Pascagoula held a meeting where Howard Page (of the Steps Coalition) Wes Smith (p..." | Read more » almost 10 years ago
eustatic "Get her a lawyer. Work on a nuisance claim. Document any health symptoms that could be related to the bad air. Look for an document corrosion in..." | Read more » about 10 years ago
stevie "Yeah I got those numbers off the TRI page if you go to the main TRI page (http://www2.epa.gov/toxics-release-inventory-tri-program), search the zip..." | Read more » about 10 years ago
mathew "12 Cease and Desist orders make a mockery of the words "cease and desist." here's the TRI report for Jackson County " | Read more » about 10 years ago