HOME >> BIOLOGY >> NEWS
Rivers May Be Emitting Substance Involved In Ozone Destruction

Federal Study Cites High Emissions of Nitrous Oxide

Rivers may be emitting significant amounts of nitrous oxide as a result of effluents from wastewater treatment plants and agricultural fields, according to a study by the U.S. Geological Survey. In the atmosphere, nitrous oxide (N2O) acts as a catalyst in ozone depletion. The government study shows N2O emissions along the South Platte River in Colorado and Nebraska, where the measurements were taken, are comparable to some of the highest known emission rates in the world.

The study is reported in the Nov. 14 web edition of Environmental Science & Technology, a peer-reviewed scientific journal published by the American Chemical Society, the world's largest scientific society. The study also will appear in the Jan. 1 print edition of the journal.

The total annual N2O emissions from the South Platte River are "similar to the estimated annual N2O emissions from all primary municipal wastewater treatment processes in the United States," according to the article. "If this one river system is similar to others, then nitrous oxide emissions from rivers could be a major human-made source of N2O to the atmosphere," say USGS hydrologists Peter McMahon, Ph.D., and Kevin Dennehy, who conducted the one-year study. However, the researchers point out that measurements from other rivers are needed before drawing any final conclusions.

Few published accounts exist of nitrous oxide emissions from an inland river, according to McMahon and Dennehy. Most N2O studies have focused on wastewater treatment plants, agricultural fields, forests and lakes, they say.

As with many rivers in the U.S., the South Platte receives wastewater effluent from municipalities and groundwater return flows from irrigated fields. The measurements were taken along a 450-mile stretch of the river from North Platte, Neb., to just above Denver, Colo.


'"/>

Contact: Nancy Blount
n_blount@acs.org
202-872-4440
American Chemical Society
14-Dec-1998


Page: 1

Related biology news :

1. Humans march to a faster genetic drummer than primates, UC Riverside research says
2. UC Riverside researcher takes snapshots of the movement of molecules in a billionth of a second
3. UC Riverside researchers discover new way to identify cell growth
4. UC Riverside professor to spend year with US State Department
5. UC Riverside researchers develop low-carb corn with enhanced protein and oil
6. UC Riverside researchers improve drought tolerance in plants
7. Plant sex protein identified at UC Riverside
8. UC Riverside researchers publish paper on botulism detection system
9. UC Riverside to convene conference on genetically modified organisms, Oct. 14-17, 2003
10. UC Riverside plant pathologist awarded $1 million grant to study virus assembly
11. UC Riverside study indicates mosquito coils may cause cancer

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/15/2016)... June 15, 2016 Transparency ... titled "Gesture Recognition Market by Application Market - Global Industry Analysis ... 2024". According to the report, the  global gesture recognition ... 2015 and is estimated to grow at a ... by 2024.  Increasing application of gesture ...
(Date:6/9/2016)... TURKU, Finland , June 9, 2016 ... French National Police deploy Teleste,s video security solution to ensure ... France during the major tournament ... and data communications systems and services, announced today that its ... Police Prefecture to back up public safety across ...
(Date:6/3/2016)... 2016 Das DOTM ... Nepal hat ein 44 Millionen ... Kennzeichen, einschließlich Personalisierung, Registrierung und IT-Infrastruktur, an ... und Implementierung von Identitätsmanagementlösungen. Zahlreiche renommierte internationale ... teilgenommen, aber Decatur wurde als konformste und ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... ... June 23, 2016 , ... ... announce the launch of their brand, UP4™ Probiotics, into Target stores nationwide. The ... is proud to add Target to its list of well-respected retailers. This list ...
(Date:6/23/2016)... 23, 2016 Houston Methodist Willowbrook Hospital ... Sports Association to serve as their official health ... Methodist Willowbrook will provide sponsorship support, athletic training ... association coaches, volunteers, athletes and families. ... Sports Association and to bring Houston Methodist quality ...
(Date:6/23/2016)... --  EpiBiome , a precision microbiome engineering company, today ... from Silicon Valley Bank (SVB). The financing will allow ... drug development efforts, as well as purchase additional lab ... been an incredible strategic partner to us – one ... provide," said Dr. Aeron Tynes Hammack , EpiBiome,s ...
(Date:6/23/2016)... , June 23, 2016 Apellis Pharmaceuticals, ... 1 clinical trials of its complement C3 inhibitor, ... and multiple ascending dose studies designed to assess ... of subcutaneous injection in healthy adult volunteers. ... either as a single dose (ranging from 45 ...
Breaking Biology Technology:
Cached News: