Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Safety of bismuth bullets questioned: Study

16.11.2004


May not be considered non-toxic



Bismuth bullets, which became the primary form of bullets sold in Canada after lead shot was incrementally banned for environmental reasons between 1991 and 1999, may not be as non-toxic as originally thought, according to a new study. "It’s not clear whether bismuth is a non-toxic shot alternative," says study co-author William Gough, a professor in the Department of Physical and Environmental Sciences at the University of Toronto at Scarborough. "Our final recommendation is to abandon bismuth and use steel shot until further research is completed."

Gough, along with graduate student Ruwan Jayasinghe and colleagues from McMaster and Queen’s universities and the University of Waterloo, examined the background levels of bismuth and lead in the muscle and liver tissues of mallard ducks, northern pintails, green-winged teals, Canada geese and snow geese. The waterfowl samples were all provided by hunters from First Nations Cree communities in the western James Bay region, who eat the birds as part of their traditional diet.


Bismuth behaves in a ballistically similar way to lead and is cheaper than steel shot, making it the preferred alternative. But the researchers found what they believe are analytical errors in the original studies that justified the switch to bismuth as a non-toxic alternative to lead. Moreover, Gough and his colleagues found evidence of lead contamination resulting from bismuth use. Human and laboratory animal studies have suggested that excessive bismuth exposure may be linked to blood, liver, kidney and neural problems. Gough says that populations who rely on potentially contaminated food sources, such as First Nations people, may be at greatest risk.

Prof. William Gough | EurekAlert!
Further information:
http://www.utoronto.ca

More articles from Studies and Analyses:

nachricht Researchers simplify tiny structures' construction drip by drip
12.11.2018 | Princeton University, Engineering School

nachricht Mandibular movement monitoring may help improve oral sleep apnea devices
06.11.2018 | Elsevier

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: UNH scientists help provide first-ever views of elusive energy explosion

Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.

Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...

Im Focus: A Chip with Blood Vessels

Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.

Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...

Im Focus: A Leap Into Quantum Technology

Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.

In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...

Im Focus: Research icebreaker Polarstern begins the Antarctic season

What does it look like below the ice shelf of the calved massive iceberg A68?

On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.

Im Focus: Penn engineers develop ultrathin, ultralight 'nanocardboard'

When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure

Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

“3rd Conference on Laser Polishing – LaP 2018” Attracts International Experts and Users

09.11.2018 | Event News

On the brain’s ability to find the right direction

06.11.2018 | Event News

European Space Talks: Weltraumschrott – eine Gefahr für die Gesellschaft?

23.10.2018 | Event News

 
Latest News

Purdue cancer identity technology makes it easier to find a tumor's 'address'

16.11.2018 | Health and Medicine

Good preparation is half the digestion

16.11.2018 | Life Sciences

Microscope measures muscle weakness

16.11.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>