44 Current news about the topic contaminants

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Unprecedented dynamic-range resolution useful for examining impact of environmental pollutants on cells and tissues

Full-body synchrotron imaging of roundworms reveals nanoparticle accumulation

02-Jun-2022

Scientists working at DESY’s PETRA III light source have been able to generate the first synchrotron-based X-ray map of the whole body of an organism at such a high resolution that contaminants could be detected at the individual cell level. The research team was able to identify cerium ...

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New device can measure toxic lead within minutes

Researchers create portable lab-on-a-chip that could detect many contaminants

28-Aug-2020

Rutgers researchers have created a miniature device for measuring trace levels of toxic lead in sediments at the bottom of harbors, rivers and other waterways within minutes - far faster than currently available laboratory-based tests, which take days. The affordable lab-on-a-chip device could ...

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Engineers use electricity to clean up toxic water

Powerful electrochemical process destroys water contaminants, such as pesticides

10-Jul-2020

A team of engineers may be one step closer to cleaning up heavily contaminated industrial wastewater streams. Researchers from the School of Chemical and Biomolecular Engineering developed an electrochemical oxidation process with the aim of cleaning up complex wastewater that contained a toxic ...

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The Secret Contamination of Polar Bears

Hundreds of unrecognized halogenated contaminants discovered in polar bear serum

05-Dec-2018

Using a new approach to measure chemical contaminants in polar bears, scientists from Canada and the United States found a large variety of new chlorinated and fluorinated substances, including many new polychlorinated biphenyl metabolites. Worryingly, these previously unrecognized contaminants ...

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Widespread uranium contamination found in India's groundwater

11-Jun-2018

A new Duke University-led study has found widespread uranium contamination in groundwater from aquifers in 16 Indian states. The main source of the uranium contamination is natural, but human factors such as groundwater-table decline and nitrate pollution may be exacerbating the problem. Several ...

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Don't Give the Slightest Chance to Toxic Elements in Medicinal Products

New high-accuracy reference solutions for the SI-traceable measurement

27-Mar-2018

Lead, cadmium, mercury, and arsenic do not belong in medicinal products. International requirements for the quality of medicines have therefore become more stringent and introduced new control requirements. Hence, it makes sense to use high-accuracy reference solutions with defined contents of ...

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Rice U. sleuths find metal in 'metal-free' catalysts

28-Feb-2018

Detective work by Rice University chemists has defined a deception in graphene catalysts that, until now, has defied description. Graphene has been widely tested as a replacement for expensive platinum in applications like fuel cells, where the material catalyzes the oxygen reduction reaction ...

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Changes in mouse breast tissue after exposure to fracking chemicals

07-Feb-2018

In a study, environmental scientists led by Laura Vandenberg at the University of Massachusetts Amherst report that they observed changes in mammary gland development of female mice exposed during early development to the chemicals used in unconventional oil and gas (UOG) extraction - including ...

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X-ray footprinting solves mystery of metal-breathing protein

04-Sep-2017

Scientists have discovered the details of an unconventional coupling between a bacterial protein and a mineral that allows the bacterium to breathe when oxygen is not available. The research, conducted by a team of scientists at the Department of Energy's Lawrence Berkeley National Laboratory ...

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A hybrid material to spot organic contaminants in the atmosphere

31-Jul-2017

The development of hybrid materials is an emerging field in materials science. As the researcher explained, the interest in these materials stems from "the success in combining that stability of inorganic components with the versatility of organic components. Blending them causes the properties ...

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