Featured Research

from universities, journals, and other organizations

New Method For Tracing Metal Pollution Back To Its Sources

Date:
November 21, 2008
Source:
Imperial College London
Summary:
A new way of pinpointing where zinc pollution in the atmosphere comes from could improve pollution monitoring and regulation, according to new research.

A new way of pinpointing where zinc pollution in the atmosphere comes from could improve pollution monitoring and regulation, says new research.

Related Articles


Imperial College London researchers say their work is a major breakthrough as current methods for analysing zinc pollution only measure pollution in the atmosphere; they do not trace it back to its source.

Researchers say their method will provide a new tool for policy makers and modellers. A better understanding of zinc pollution sources could inform and improve national and international pollution strategies.

At low levels, zinc is an essential mineral used by plants and animals. But at higher levels, zinc pollution is suspected of causing cardiovascular, reproductive, immune, and respiratory problems.

Researchers trialled their method on atmospheric samples collected in Sao Paulo, Brazil. They worked in conjunction with researchers from the University of Sao Paulo who wanted to find out where zinc pollution comes from.

The analysis of air samples suggested that a major source of zinc in the city’s atmosphere comes from cars and not from manufacturers as previously thought.

Scientists traced zinc pollution to car exhaust fumes and metal friction when cars brake, releasing zinc into the atmosphere. The study’s co-author, Dr Dominik Weiss, from Imperial's Department of Earth Science and Engineering, says:

"We need to know where these sources of pollution are coming from because exposure to zinc pollution over a long period of time is a significant concern for the health of residents in big cities such as Sao Paulo or London.”

The new method analyses zinc isotopes, which vary according to the pollution source. For instance, zinc isotopes in car exhaust are different from zinc isotopes coming out of industrial smoke stacks. The identity of these isotopes provides the clues to trace zinc pollution back to its source.

Dr Weiss says this technique for analysing isotopes could also be applied to tracing the sources of other metals such as cadmium, copper and thallium. He adds:

"Trace metals have a nasty way of bio-accumulating. They build up through the food chain with toxic consequences. Our new method could help policy makers find some more accurate answers about the true sources of metal pollution."


Story Source:

The above story is based on materials provided by Imperial College London. Note: Materials may be edited for content and length.


Journal Reference:

  1. Simone Gioia, Dominik Weiss, Barry Coles, Tim Arnold and Marly Babinski. Accurate and precise zinc isotope ratio measurements in urban aerosols. Analytical Chemistry, 18 November 2008 [link]

Cite This Page:

Imperial College London. "New Method For Tracing Metal Pollution Back To Its Sources." ScienceDaily. ScienceDaily, 21 November 2008. <www.sciencedaily.com/releases/2008/11/081120073121.htm>.
Imperial College London. (2008, November 21). New Method For Tracing Metal Pollution Back To Its Sources. ScienceDaily. Retrieved December 17, 2014 from www.sciencedaily.com/releases/2008/11/081120073121.htm
Imperial College London. "New Method For Tracing Metal Pollution Back To Its Sources." ScienceDaily. www.sciencedaily.com/releases/2008/11/081120073121.htm (accessed December 17, 2014).

Share This


More From ScienceDaily



More Earth & Climate News

Wednesday, December 17, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ivory Trade Boom Swamps Law Efforts

Ivory Trade Boom Swamps Law Efforts

Reuters - Business Video Online (Dec. 17, 2014) Demand for ivory has claimed the lives of tens of thousands of African elephants and now a conservation report says the illegal trade is overwhelming efforts to enforce the law. Amy Pollock reports. Video provided by Reuters
Powered by NewsLook.com
Uphill Battle to Tackle Indonesian Shark Fishing

Uphill Battle to Tackle Indonesian Shark Fishing

AFP (Dec. 17, 2014) Sharks are hauled ashore every day at a busy market on the central Indonesian island of Lombok, the hub of a booming trade that provides a livelihood for local fishermen but is increasingly alarming environmentalists. Duration: 00:42 Video provided by AFP
Powered by NewsLook.com
France's Sauternes Wine Threatened by New Train Line

France's Sauternes Wine Threatened by New Train Line

AFP (Dec. 16, 2014) Winemakers in southwestern France's Bordeaux are concerned about a proposed high speed train line that could affect the microclimate required for the region's sweet wine. Duration: 01:06 Video provided by AFP
Powered by NewsLook.com
2016 Olympic Waters Feature 'Super Bacteria' Researchers Say

2016 Olympic Waters Feature 'Super Bacteria' Researchers Say

Newsy (Dec. 16, 2014) Researchers found the bacteria Klebsiella pneumoniae Carbapenemase in the water where the 2016 Olympics is supposed to take place. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins