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Native plants as sentinels of tritiu...

Grant, Colleen A.

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Native plants as sentinels of tritium contamination.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Native plants as sentinels of tritium contamination./
作者:	Grant, Colleen A.
面頁冊數:	154 p.
附註:	Source: Masters Abstracts International, Volume: 42-04, page: 1202.
Contained By:	Masters Abstracts International42-04.
標題:	Biology, Ecology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1417772

Native plants as sentinels of tritium contamination.
Grant, Colleen A.

Native plants as sentinels of tritium contamination. - 154 p.

Source: Masters Abstracts International, Volume: 42-04, page: 1202.

Thesis (M.S.)--University of Nevada, Las Vegas, 2003.

This study assessed the potential of six plant species growing in the Mojave Desert, as sentinels of tritium contamination below earthen caps covering radioactive waste. The plants, grown in hydroponic tanks and 3 m columns, were evaluated for treatments representing three different levels of tritium contamination. Tritium, a radioactive isotope of hydrogen, replaces a hydrogen atom in a water molecule and readily migrates through soil. Plant roots coming into contact with soil moisture do not discriminate between tritiated water molecules and dihydrogen water molecules in the uptake process. Plants have the potential to be more effective monitors of radioactive waste-sites than mechanical sensors, because roots sample a larger soil volume. Tissue collection from plants to detect tritium can be completely aboveground, offers the option of transpiration capture or biomass analysis, and potentially exposes technicians to lower levels of radioactivity than encountered during installation and maintenance of in-ground mechanical sensors.Subjects--Topical Terms:

1017726
Biology, Ecology.

Native plants as sentinels of tritium contamination.
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100 1 $a Grant, Colleen A. $3 1947624
245 1 0 $a Native plants as sentinels of tritium contamination.
300 $a 154 p.
500 $a Source: Masters Abstracts International, Volume: 42-04, page: 1202.
500 $a Advisers: Stanley D. Smith; Dale A. Devitt.
502 $a Thesis (M.S.)--University of Nevada, Las Vegas, 2003.
520 $a This study assessed the potential of six plant species growing in the Mojave Desert, as sentinels of tritium contamination below earthen caps covering radioactive waste. The plants, grown in hydroponic tanks and 3 m columns, were evaluated for treatments representing three different levels of tritium contamination. Tritium, a radioactive isotope of hydrogen, replaces a hydrogen atom in a water molecule and readily migrates through soil. Plant roots coming into contact with soil moisture do not discriminate between tritiated water molecules and dihydrogen water molecules in the uptake process. Plants have the potential to be more effective monitors of radioactive waste-sites than mechanical sensors, because roots sample a larger soil volume. Tissue collection from plants to detect tritium can be completely aboveground, offers the option of transpiration capture or biomass analysis, and potentially exposes technicians to lower levels of radioactivity than encountered during installation and maintenance of in-ground mechanical sensors.
590 $a School code: 0506.
650 4 $a Biology, Ecology. $3 1017726
650 4 $a Biology, Plant Physiology. $3 1017865
650 4 $a Environmental Sciences. $3 676987
690 $a 0329
690 $a 0817
690 $a 0768
710 2 0 $a University of Nevada, Las Vegas. $3 1017627
773 0 $t Masters Abstracts International $g 42-04.
790 1 0 $a Smith, Stanley D., $e advisor
790 1 0 $a Devitt, Dale A., $e advisor
790 $a 0506
791 $a M.S.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1417772