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Scientists develop method to detect radioactive materials in gold, copper


Scientists develop method to detect radioactive materials in gold, copper
Collision cell.
(Image by Andrea Starr, courtesy of the Pacific Northwest National Laboratory).
Researchers at the US Department of Energy’s Pacific Northwest National Laboratory have developed a method that holds promise for transforming how ultra-trace elements are separated and detected.
Ultra-trace levels of radioactive materials can wreak havoc on sensitive equipment such as microchips, transistors, sensitive sensors, or instruments searching for evidence of currently undetected particles believed to comprise most of the universe. 
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In a paper published in the
Journal of Analytical Atomic Spectroscopy, the scientists said that low levels of troublesome naturally occurring radioactive elements like uranium and thorium atoms are often tucked among valuable metals like the gold and copper that go into the electrical components of ....

Isaac Arnquist , Khadouja Harouaka , Greg Eiden , Analytical Atomic Spectroscopy , கிரெக் ஈடன் , பகுப்பாய்வு அணு ஸ்பெக்ட்ரோஸ்கோபி ,

It's elemental: Ultra-trace detector tests gold purity


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IMAGE: Khadouja Harouaka (seated) and Isaac Arnquist prepare samples in an ultra-clean laboratory, which is necessary to ensure accurate mass spectrometry measurements.
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Credit: (Photo by Andrea Starr | Pacific Northwest National Laboratory)
RICHLAND, Wash.?Unless radon gas is discovered in a home inspection, most people remain blissfully unaware that rocks like granite, metal ores, and some soils contain naturally occurring sources of radiation. In most cases, low levels of radiation are not a health concern. But some scientists and engineers are concerned about even trace levels of radiation, which can wreak havoc on sensitive equipment. The semiconductor industry, for instance, spends billions each year to source and scrub ultra-trace levels of radioactive materials from microchips, transistors and sensitive sensors. ....

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