Navigation Links
Smoke smudges Mexico City's air, chemists identify sources
Date:9/3/2008

ated waste peaked most weekday mornings during the 20-day study period, the team reports in the early online edition of Environmental Science and Technology. From the top of a building in a mixed industrial and residential area in the northern part of the city, they saw an influx of aerosols that were a combination of lead, zinc and chloride mixed with soot between midnight and 10:00 am.

Although the source of these mixed-metal particles can't be determined with complete certainty from the data collected in this study, the pattern matched that found by a previous study of fly ash from incinerators burning municipal waste. Emissions from smelting, another possible source of metal aerosols, tend not to include chloride or phosphorous, both of which were mixed in with the morning metal aerosols. An absence of metals in the air on weekends and during a holiday, when industrial incinerators were closed, bolsters the case for pinning metals in the air onto burning waste.

"If you were to burn electronic waste, you would get particles very similar to these," said Ryan Moffet, lead author on both papers and a former graduate student at UC San Diego. Moffet now studies atmospheric aerosols at the Lawrence Berkeley National Laboratory.

The source of smoke particles is more clear. Satellite images taken during the experiment show a swath of fires burning in the hills surrounding Mexico City. By matching the types of smog bits they captured to the wind patterns each day, the team was able to attribute the afternoon influx of freshly burned biomass to these distant fires. Winds picked up each morning after 11:00 am, blowing the industrial waste away and bringing smoke from the fires to the south, they report in a forthcoming issue of the journal Atmospheric Chemistry and Physics.

Fuel burned by street vendors also contributes to smoke in the city, the scientists say. "A lot of people use charcoal on the streets to cook their food,
'/>"/>

Contact: Susan Brown
sdbrown@ucsd.edu
858-246-0161
University of California - San Diego
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Infection blocks lungs protective response against tobacco smoke
2. If your first cigarette gave you a buzz and you now smoke, a gene may be to blame
3. Fruits, vegetables and teas may protect smokers from lung cancer, UCLA researchers report
4. Alzheimers starts earlier for heavy drinkers, smokers
5. Fire without smoke
6. Scientists discover how cigarette smoke causes cancer: Study points to new treatments, safer tobacco
7. Vitamin E may increase tuberculosis risk in male smokers with high vitamin C intake
8. Cigarette smoke, alcohol damage hearts worse as combo
9. Early origins of maize in Mexico
10. Archaeologist uses satellite imagery to explore ancient Mexico
11. Sunflower debate ends in Mexico, researchers say
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Smoke smudges Mexico City's air, chemists identify sources
(Date:2/23/2015)... , Feb. 23, 2015 NXT-ID, Inc. (NASDAQ: ... "Company"), a biometric authentication company focused on the growing ... provisional patent 62114357 for DISTRIBUTED VOICE DIRECTED ... NXT-ID introduces a new groundbreaking payment method. Payment accounts ... account may only be accessed if both the speech ...
(Date:2/13/2015)... Feb. 13, 2015 ACT Genomics Co., ... aims to transform cancer genomic information into precision ... company has raised US$ 8 million in the its ... Taipei, Taiwan , ACT Genomics ... With the aim to implement next generation sequencing ...
(Date:2/11/2015)... DALLAS , February 11, 2015 /PRNewswire/ ... market research report "Access Control Market by Product ... (Commercial, Residential, Military and Defense, Government, Industrial, Healthcare, ... , published by MarketsandMarkets, the Access Control ... by 2020, growing at a CAGR of ...
Breaking Biology News(10 mins):NXT-ID Patents Voice Directed Payments 2NXT-ID Patents Voice Directed Payments 3ACT Genomics Raises $8 Million in its First Private Funding Round 2Access Control Market Worth $10.4 Billion by 2020 2Access Control Market Worth $10.4 Billion by 2020 3Access Control Market Worth $10.4 Billion by 2020 4
... to decisions about land use than climate change, population ... Mountains of Morocco, individual religious beliefs in local Saints ... use their environment and manage local resources. These findings1 ... Barcelona in Spain, and his colleagues, published online in ...
... call it comparing apples and oranges, but lining up ... Scientists can see how species have evolved, pinpoint which ... probably are crucial to the animals, survival, or sketch ... is spotty. , But the tools used to align ...
... Ore. Researchers at Oregon State University have made an ... toward robots that not only can walk and run effectively, ... an optimal approach with robotic mechanisms, studies are moving closer ... military, create prosthetic limbs for humans that work much better, ...
Cached Biology News:Farmers' beliefs on a higher plain 2Genome comparison tools found to be susceptible to slip-ups 2Advances made in walking, running robots 2Advances made in walking, running robots 3
(Date:2/27/2015)... The fully automated supercritical fluidic chromatography-based ... analyze up to 48 samples utilizing automatic extraction ... targets by mass spectrometry. , The Nexera ... requirements of a wide range of applications, including ... search for disease biomarkers, additives in forming polymers, ...
(Date:2/27/2015)... CA (PRWEB) February 27, 2015 Cytokinetics, ... forces on February 28 with patients and health care ... awareness for Rare Disease Day®. Rare Disease Day ... and calling attention to the special challenges faced by ... them. , “Cytokinetics is proud to stand alongside patients ...
(Date:2/26/2015)... 2015 On behalf of biotech client ... Wilentz, Goldman & Spitzer, P.A. (Wilentz) secured a significant ... Inc. in excess of $10 million. The jury determined ... and that it improperly hired one or more of ... for judgment notwithstanding the verdict, a new trial, and ...
(Date:2/26/2015)... 2015   Regulus Therapeutics Inc . (NASDAQ: ... and development of innovative medicines targeting microRNAs, today announced ... Chief Executive Officer of Regulus, will present a company ... Annual Healthcare Conference on Wednesday, March 4, 2015 at ... the Boston Marriott Copley Place.  The ...
Breaking Biology Technology:Shimadzu Corporation Launches Nexera UC - The World’s Foremost Unified Chromatography System 2Shimadzu Corporation Launches Nexera UC - The World’s Foremost Unified Chromatography System 3Cytokinetics Joins Global Movement to Raise Awareness for Rare Diseases 2Cytokinetics Joins Global Movement to Raise Awareness for Rare Diseases 3Cytokinetics Joins Global Movement to Raise Awareness for Rare Diseases 4Cytokinetics Joins Global Movement to Raise Awareness for Rare Diseases 5Cytokinetics Joins Global Movement to Raise Awareness for Rare Diseases 6Wilentz Client GenScript Awarded $10 Million in Trade Secrets Case Against Genewiz 2Wilentz Client GenScript Awarded $10 Million in Trade Secrets Case Against Genewiz 3Regulus to Present at Cowen and Company 35th Annual Healthcare Conference 2Regulus to Present at Cowen and Company 35th Annual Healthcare Conference 3
... ... has recently gained popularity for treatment of fungal nails. OnychoLase™ Laser Nail ... “prescreening” practioners and making sure that they satisfy the requirements to bear the brand ... , ...
... Silence Therapeutics plc (AIM: SLN) ("Silence" ... States patent 7,723,316, titled Compositions and Methods of ... Disease, by the United States Patent and Trademark Office ... portfolio of RNA interference (RNAi) intellectual property, is broadly ...
... 2010 Hailed as a "cross between a high-speed ... have developed a new, practical technology for fabricating tiny ... Badrossamay to the fairground treat of spun sugar is ... and pushes out 100 nanometer-diameter polymer-based threads using a ...
Cached Biology Technology:OnychoLase™ Laser Nail Center Provides New Laser Nail Therapy to Help Fight Against Fungal Nails 2OnychoLase™ Laser Nail Center Provides New Laser Nail Therapy to Help Fight Against Fungal Nails 3Silence Therapeutics Issued Novel RNAi Patent Covering High-Value Cancer Target in United States 2Silence Therapeutics Issued Novel RNAi Patent Covering High-Value Cancer Target in United States 3Silence Therapeutics Issued Novel RNAi Patent Covering High-Value Cancer Target in United States 4Inspired by a cotton candy machine, engineers put a new spin on creating tiny nanofibers 2Inspired by a cotton candy machine, engineers put a new spin on creating tiny nanofibers 3
Porcine Aortic Endothelial Cells (PAOEC) (>500,000 cells)...
Bovine Endometrium Epithelial Cells (BEnEpC) (>500,000 cells)...
PC based system for advanced chemifluorescent, chemiluminescent, fluorescent and colorimetric, microarray and microscope imaging and analysis....
Pendrin (H-195)...
Biology Products: