Navigation Links
A different kind of mine disaster
Date:4/12/2010

BLOOMINGTON, Ind. -- The world's largest antimony mine has become the world's largest laboratory for studying the environmental consequences of escaped antimony -- an element whose environmental and biological properties are still largely a mystery.

"Antimony is an emergent contaminant," said IU Bloomington Ph.D. student Faye Liu, the paper's lead author. "People have not paid enough attention to it."

Used in small quantities, antimony has a wide variety of applications -- from hardening the lead in bullets and improving battery performance to combating malaria.

Little is known about antimony's toxicity, in part because the metalloid element is usually found at low, parts-per-billion concentrations in natural environments. At Xikuangshan, Liu and her colleagues found that aqueous antimony concentrations could be as high 11 parts per million, 1,000 times the antimony levels found in uncontaminated water.

The alarming circumstances at Xikuangshan present an opportunity to understand what happens to antimony, geologically and chemically, when large quantities of it are introduced to the environment. That knowledge will be useful to investigations of antimony contamination near factories and military bases around the world.

The U.S. Environmental Protection Agency and similar regulatory agencies in Europe operate under the assumption that antimony's properties are similar to those of arsenic, another element in antimony's chemical group.

"That will need to change," said IU Bloomington geologist Chen Zhu, Liu's advisor and the project's principal investigator. "We saw that antimony behaves very differently from arsenic -- antimony oxidizes much more quickly than arsenic when exposed."

The vast majority of antimony the scientists isolated at Xikuangshan was of the "V" type, an oxidation state in which the metal has given up five electrons. It is believed V is the least toxic of the three oxidation states
'/>"/>

Contact: David Bricker
brickerd@indiana.edu
812-856-9035
Indiana University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Men and women respond differently to stress
2. Vitamin D levels have different effects on atherosclerosis in blacks and whites
3. Mutations in different cells cooperate to set the stage for cancer
4. Biologists merge methods, results from different disciplines to find new meaning in old data
5. Hebrew University, American researchers show trigger to stem cell differentiation
6. CSHL study finds short- and long-term memories require same gene but in different circuits
7. Grant supports LSUHSC research on how like cell receptor systems determine very different functions
8. Neural stem cell differentiation factor discovered
9. One sponge-like material, three different applications
10. Animals that seem identical may be completely different species
11. Protein is key to embryonic stem cell differentiation
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
A different kind of mine disaster
(Date:4/2/2015)... BETHESDA, Md. , April 2, 2015 ... Salt Lake City , the American ... election of five new directors to its Board.  Members ... for the ACMG and for forming and advancing its ... the medical genetics profession. "It,s an eventful ...
(Date:3/31/2015)... NEW YORK , March 31, 2015  Elephant ... the "Company"), a global provider of Software Defined Network ... solutions, today announced total revenue of approximately $20.4 million ... to a restated $19.5 million for the year ended ... of calendar 2014, the Company had completed its multi-year ...
(Date:3/24/2015)... 2015 Research and Markets ( http://www.researchandmarkets.com/research/kvdtcw/face_and_voice ) has ... Global Strategic Business Report" report to their offering. ... in US$ Thousands by the following Segments: Face Biometrics, and Voice ... Canada , Japan , ... East & Africa , and ...
Breaking Biology News(10 mins):American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 2American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 3American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 4American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 5American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 6American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 7American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 8Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 3Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 4Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 5Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 6Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 2Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 3Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 4Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 5Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 6
... that have died in mass strandings in New Zealand ... a new study concludes, challenging a popular assumption that ... almost certain death because of familial ties. Using ... determined that both related and unrelated individuals were scattered ...
... , Francisella tularensis , the cause of tularemia ... considered a potential biological weapon because it is readily aerosolized ... humans. While a live attenuated vaccine strain has been ... understand the basis for its attenuated virulence. In an ...
... engineers are developing the right mix to reduce concrete,s ... biofuel byproducts. "The idea is to use bioethanol ... concrete as a partial replacement of cement," said Feraidon ... using these materials we can reduce the carbon footprint ...
Cached Biology News:Study questions the role of kinship in mass strandings of pilot whales 2Study questions the role of kinship in mass strandings of pilot whales 3News tips from the journal mBio®, volume 4, issue 1 2Researchers building stronger, greener concrete with biofuel byproducts 2Researchers building stronger, greener concrete with biofuel byproducts 3
(Date:4/23/2015)... , April 23, 2015  Neurocrine Biosciences, Inc. (Nasdaq: ... report its first quarter 2015 results before the Nasdaq ... then host a live conference call and webcast to discuss ... morning, April 30, 2015 at 8:00 a.m. Eastern Time ... the live conference call by dialing 866-952-1906 (US) or ...
(Date:4/23/2015)... FRANCISCO, Calif. , April 23, 2015  Veracyte, Inc. ... entered into a definitive agreement to sell approximately $40 ... Under the agreement, the investors will purchase an aggregate ... price of $8.15 per share, the closing stock price ... by new and existing investors, including Broadfin Capital, Camber ...
(Date:4/23/2015)... HOUSTON , April 23, 2015  Metanome, ... today announced the company has changed its name ... reflect Diversigen,s positioning as the single commercial source ... need to capitalize on the diverse opportunities of ... types that Diversigen accepts – including those that ...
(Date:4/23/2015)... Delpor, Inc. (Delpor), a biotechnology company ... States Patent and Trademark Office has issued 2 new ... US Pat. No. 8,986,727 was issued on March ... device for the sustained release of therapeutic agents. ... sustained (zero-order) release of large and small molecules for ...
Breaking Biology Technology:Neurocrine Biosciences Announces Conference Call and Webcast to Report First Quarter 2015 Results 2Veracyte, Inc. Announces $40 Million Private Placement 2Veracyte, Inc. Announces $40 Million Private Placement 3Veracyte, Inc. Announces $40 Million Private Placement 4Metanome Announces Corporate Name Change to Diversigen 2Delpor, Inc. Announces the Issuance of 2 New US Patents Based on its Nanopore Technology which Enables the Sustained Release of Drugs from a Small Implant Device 2Delpor, Inc. Announces the Issuance of 2 New US Patents Based on its Nanopore Technology which Enables the Sustained Release of Drugs from a Small Implant Device 3
... June 2 NeoGenomics, Inc. (OTC Bulletin ... Sixth Annual Noble Financial Equity Conference at 12:30 PM ... the Seminole Hard Rock Hotel in Hollywood, FL. ... give a presentation regarding NeoGenomics, market positioning, financial performance, and ...
... Genoptix, Inc. (Nasdaq: GXDX), a specialized laboratory services provider, today announced the Company,s participation at two ... , , EVP ... SMID Cap Conference at the InterContinental Hotel in Boston, Mass. beginning at ... , , ...
... to be effective in making silicon-based electronics may be viable ... molecule thick. Researchers at the Max Plank Institute for Metals ... online in the journal Physical Review B on June 1. ... the basis for a host of extremely small and efficient ...
Cached Biology Technology:NeoGenomics to Present at Noble Financial's 6th Annual Equity Conference on Monday, June 7th 2NeoGenomics to Present at Noble Financial's 6th Annual Equity Conference on Monday, June 7th 3Genoptix Announces Participation at June Investor Conferences 2
Rabbit polyclonal to Tryptophanyl tRNA synthetase ( Abpromise for all tested applications). Antigen: Recombinant full length protein (Human): Tryptophanyl tRNA synthetase Entrez Gene ID: 745...
Mouse monoclonal [CIa] to Ia Antigen (Biotin) ( Abpromise for all tested applications)....
RNA polymerase sigma 70 Immunogen: Recombinant, full length protein. Storage: -20 C, Avoid Freeze/Thaw Cycles...
Mouse monoclonal to Factor V Heavy Chain Immunogen: Purified human Factor V. Specificity: This antibody reacts with the activation C peptide (mw ~150,000) in the heavy chain of thrombin-cleave...
Biology Products: