HOME >> BIOLOGY >> NEWS
Safety of bismuth bullets questioned: Study

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.


'"/>

Contact: Professor William Gough
416-287-7245
University of Toronto
15-Nov-2004


Page: 1

Related biology news :

1. Safety and immunogenicity data available for new pertussis booster vaccine candidate for adolescents
2. Do lead bullets continue to be a hazard after they land?
3. Study begins to reveal clues to the cause and progression of sepsis
4. Study finds gender differences in renal and other genes contributing to blood pressure
5. Study suggests estrogen deficiency can lead to obesity-induced high blood pressure after menopause
6. Study: Sticking to the sand might not be such good, clean fun for beachgoers
7. Study points to new way to predict death risk from torn aorta
8. Study identifies new gene therapy tools for inherited blindness
9. Study finds contaminated water reaching Floridas offshore keys
10. Study sheds light on why humans walk on two legs
11. Study explains how pathogens evolve to escape detection

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


(Date:6/23/2020)... ... June 23, 2020 , ... ... development services, today announced that the company has received ISO9001:2015 certification for ... diagnostics, and research industries. The decision to pursue ISO9001 accreditation demonstrates Kemp’s ...
(Date:6/23/2020)... ... June 22, 2020 , ... The field of quantitation of ... assays (LBA) have dominated this area. However, the use of mass spectrometry in this ... now necessitates the question “How do you choose which approach to use (LBA or ...
(Date:6/23/2020)... ... , ... In its June 22 online post, business and technology news platform ... Ph.D., founder and director of stem cell biotechnology company Asymmetrex . Superb Crew ... starting July 5 it would begin offering free tissue stem cell counting ...
Breaking Biology News(10 mins):
(Date:7/31/2020)... FRANCISCO (PRWEB) , ... July ... ... provider of cloud-based software for the life sciences industry, today announced the ... presentation platform designed specifically for Medical Science Liaisons (MSLs) and other field ...
(Date:7/18/2020)... ... July 16, 2020 , ... Medial EarlySign , a ... prevention of high-burden diseases, and Centric Consulting, a business and technology consulting firm, ... existing data in order to identify and prioritize patients for care. , Combining ...
(Date:7/10/2020)... ... July 09, 2020 , ... In ... commonly used to suppress pigment formation in zebrafish embryos, maintaining optical transparency to ... by Dr MA has been using the zebrafish model to investigate the causes ...
(Date:7/1/2020)... , ... June 29, 2020 , ... ... to date growth of 40% in 2020, despite many obstacles created as a ... aims to increase revenue for its partnered medical practices and medical manufacturers by ...
Breaking Biology Technology:
Cached News: