HOME >> BIOLOGY >> NEWS
Reducing primary chemical emissions does not always reduce pollution

Boston, Mass. Municipalities seeking to limit harmful air pollution typically target primary pollutants with the assumption that limiting sulfur dioxide, for example, will limit the formation of sulfate particulates in the air, but a team of Penn State meteorologists suggests that, depending on the location, other pollutants may actually be the limiting factors.

"Sulfate aerosols have a large effect on the lungs and on visibility," says Ariel Stein, graduate student in meteorology. "They are also the main component in acid rain." While acid rain episodes have decreased over the past decades, there are still episodes of very acidic rain in the Northeastern United States. Stein and Dr. Dennis Lamb, professor of meteorology, looked at the variety of pollutants that figure into the formation of sulfate particles. These emissions include sulfur dioxide, nitrogen oxides and volatile organic compounds.

"We wanted to see how controlling the chemicals that oxidize sulfur dioxide affected creation of sulfate aerosols," Stein told attendees today (May 31) at the spring meeting of the American Geophysical Union in Boston. "Simply controlling sulfur dioxide does not always reduce sulfate."

The researchers found that the reactions involved are not linear and that reducing one component does not always reduce the target. They also realize that controlling a specific emission is not always possible. Sulfur dioxide enters the atmosphere when power plants burn sulfur containing coal or oil. Nitrogen oxides come both from power plant emissions and automobiles. A more difficult pollutant to control is volatile organic compounds, half of which are produced by automobiles, with the other half produced by nature.

"In general, in most urban areas, if you want to reduce sulfate, reducing volatile organic compounds is more effective than lowering nitrogen oxides," says Stein. "In rural areas, the opposite seems true, that lowering nitrogen oxides reduc
'"/>

Contact: A'ndrea Elyse Messer
aem1@psu.edu
814-865-9481
Penn State
30-May-2001


Page: 1 2

Related biology news :

1. Reducing allergens in the home helps inner-city children with asthma
2. Reducing the risk of frost damage to short-season crops
3. Reducing sodium leads to substantial drop in blood pressure, finds NHLBI study
4. Reducing methane emissions could lower overall abatement costs
5. Reducing VOC: new polymer coating process combines high degree of flexibility with improved environmental properties
6. Discovery By Fertility Specialist Offers Promise Of Reducing Multiple BirthsTied To Fertility Treatment
7. New Chemical Processing Technique Being Studied At UW May Hold Key To CleaningUp Hanford, Reducing Industrial Waste
8. Researchers identify gene for a primary form of sudden infant death sydrome (SIDS)
9. Scientists discover that metastases share a similar genetic profile to their primary tumour
10. HPV testing could be future strategy for primary screening for cervical cancer
11. Scientists at Scripps discover a genetic cause for primary iron overload

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


(Date:6/14/2017)... PARIS , June 15, 2017  IBM (NYSE: IBM ... the international tech event dedicated to developing collaboration between startups ... on June 15-17. During the event, nine startups will ... deliver value in various industries. ... in the international market, with a 30 percent increase in ...
(Date:5/6/2017)... 2017 RAM Group , Singaporean ... breakthrough in biometric authentication based on a ... to perform biometric authentication. These new sensors are based ... by Ram Group and its partners. This sensor will ... chains and security. Ram Group is a next ...
(Date:4/17/2017)... NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or the "Company"), ... Report on Form 10-K on Thursday April 13, 2017 with the ... The ... section of the Company,s website at http://www.nxt-id.com  under "SEC Filings," ... 2016 Year Highlights: Acquisition of ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... 12, 2017 , ... They call it the “hairy ball.” ... depiction of a system of linkages and connections so complex and dense that ... computer science at Worcester Polytechnic Institute (WPI) and director of the university’s bioinformatics ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... announced today that they have entered into a multiyear collaboration to identify and ... researchers with additional tools for gene editing across all applications. , Under the ...
(Date:10/12/2017)... ca (PRWEB) , ... October 12, 2017 , ... ... the Surgical Wound Market with the addition of its newest module, US Hemostats ... $1.2B market for thrombin hemostats, absorbable hemostats, fibrin sealants, synthetic sealants and biologic ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... analysis platform specifically designed for life science researchers to analyze and interpret ... Rosalind Franklin, who made a major contribution to the discovery of the ...
Breaking Biology Technology:
Cached News: