Featured Research

from universities, journals, and other organizations

Fluorescent label sheds light on radioactive contamination

Date:
February 7, 2013
Source:
National Institute for Materials Science
Summary:
Researchers have developed a way to detect caesium contamination on a scale of millimeters enabling the detection of small areas of radioactive contamination.

Schematic of spatial resolution of radioscopes and caesium sensor.
Credit: Image courtesy of National Institute for Materials Science

Researchers in Japan have developed a way to detect caesium contamination on a scale of millimetres enabling the detection of small areas of radioactive contamination.

Related Articles


The research is published in Science and Technology of Advanced Materials.

Radioactive leaks, such as at the Fukushima Daiichi nuclear plant in Japan, contaminate the local environment. Contamination of soil and water by the radioactive form of caesium is a major problem, since it persists for a long time; levels of radioactivity reduce by half only every 30 years. Effective detection and removal of radiocaesium would accelerate recovery of the environment.

Current detection methods can only localise contamination on a scale of metres to kilometres, and they do not specifically identify caesium. Researchers in Japan, led by Katsuhiko Ariga at the National Institute for Materials Science, have now developed a way to detect caesium contamination on a scale of millimetres. The work, published in Science and Technology of Advanced Materials, used a fluorescent molecule that labels caesium so that it can be seen with the naked eye under UV light.

The reaction of the molecule with a number of alkali metals caused it to fluoresce. However, while metals such as lithium, sodium and potassium caused blue fluorescence, its reaction with caesium produced a distinctive green fluorescence. This enabled accurate identification of small contaminated areas. The exact colour of the fluorescence also related to the concentration of caesium, revealing the extent of contamination.

The simplicity and accuracy of this fluorescent probe should help with more precise removal of contaminated material. It will also help to improve our understanding of contamination around chemical and radiological hazards, allowing the construction of contamination maps and the implementation of appropriate responses.


Story Source:

The above story is based on materials provided by National Institute for Materials Science. Note: Materials may be edited for content and length.


Journal Reference:

  1. Taizo Mori, Masaaki Akamatsu, Ken Okamoto, Masato Sumita, Yoshitaka Tateyama, Hideki Sakai, Jonathan P Hill, Masahiko Abe, Katsuhiko Ariga. Micrometer-level naked-eye detection of caesium particulates in the solid state. Science and Technology of Advanced Materials, 2013; 14 (1): 015002 DOI: 10.1088/1468-6996/14/1/015002

Cite This Page:

National Institute for Materials Science. "Fluorescent label sheds light on radioactive contamination." ScienceDaily. ScienceDaily, 7 February 2013. <www.sciencedaily.com/releases/2013/02/130207141200.htm>.
National Institute for Materials Science. (2013, February 7). Fluorescent label sheds light on radioactive contamination. ScienceDaily. Retrieved December 18, 2014 from www.sciencedaily.com/releases/2013/02/130207141200.htm
National Institute for Materials Science. "Fluorescent label sheds light on radioactive contamination." ScienceDaily. www.sciencedaily.com/releases/2013/02/130207141200.htm (accessed December 18, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Thursday, December 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
3D Printed Cookies Just in Time for Christmas

3D Printed Cookies Just in Time for Christmas

Reuters - Innovations Video Online (Dec. 18, 2014) A tech company in Spain have combined technology with cuisine to develop the 'Foodini', a 3D printer designed to print the perfect cookie for Santa. Ben Gruber reports. Video provided by Reuters
Powered by NewsLook.com
How Sony Hopes To Make Any Glasses 'Smart'

How Sony Hopes To Make Any Glasses 'Smart'

Newsy (Dec. 17, 2014) Sony's glasses module attaches to the temples of various eye- and sunglasses to add a display and wireless connectivity. Video provided by Newsy
Powered by NewsLook.com
Los Angeles Police To Receive 7,000 Body Cameras

Los Angeles Police To Receive 7,000 Body Cameras

Newsy (Dec. 17, 2014) Los Angeles Mayor Eric Garcetti announced the cameras will be distributed starting Jan. 1. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins