Virginia Tech researchers from geosciences and biology are looking at where arsenic occurs in water, how it is getting there, and how to prevent it. They will present their findings at the 116th national meeting of the Geological Society of America in Denver Nov. 7-10.
Since health data have demonstrated that arsenic is a carcinogen, the U.S. standard for arsenic in drinking water has been lowered from 50 to 10 parts per billion, which is the same as the European Union standard, said Madeline Schreiber, assistant professor of geosciences. She and associate professor of biology Maurice Valett are lead investigators on a National Science Foundation-funded project that began in 2002 on "Transport, transformation, and retention of arsenic in a headwater stream: hyrdrologic, biological, and geochemical controls."
Research is being conducted at a site near the Virginia Tech campus, where arsenopyrite, an arsenic-bearing sulfide, was mined from 1903 to 1919. "Arsenic was used in pesticide. The extraction process involved heating the ore so that the arsenic would oxidize as a white powder," Schreiber said.
Susan Trulove | EurekAlert!
Fast rising bedrock below West Antarctica reveals an extremely fluid Earth mantle
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In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.
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Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...
Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
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The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...
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