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The effects of wetting and drying on...

Harold, Matthew Robert.

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The effects of wetting and drying on chromium and other metal mobility.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	The effects of wetting and drying on chromium and other metal mobility./
作者:	Harold, Matthew Robert.
面頁冊數:	175 p.
附註:	Source: Masters Abstracts International, Volume: 42-01, page: 0181.
Contained By:	Masters Abstracts International42-01.
標題:	Geochemistry. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1414647
ISBN:	0496194364

The effects of wetting and drying on chromium and other metal mobility.
Harold, Matthew Robert.

The effects of wetting and drying on chromium and other metal mobility. - 175 p.

Source: Masters Abstracts International, Volume: 42-01, page: 0181.

Thesis (M.S.)--Michigan State University, 2003.

This study looks at the effects that wetting and drying has on Cr mobility in wetland soils. The source of the chromium was a former leather tannery that operated from the early 1900's to 1958. At the wetland site, the dominant form of Cr is Cr (III). A previous study done at the wetland site reported that soils that underwent saturation changes in the field released higher levels of chromium to solution during laboratory leaching studies. This study investigated four questions (1) is there evidence that wetting and drying enhances chromium mobility? (2) does the duration of drying affect chromium mobility? (3) do aerobic microbes play a role in chromium mobility during wetting and drying? (4) how does chromium behavior compare to other elements?

ISBN: 0496194364Subjects--Topical Terms:

539092
Geochemistry.

The effects of wetting and drying on chromium and other metal mobility.
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100 1 $a Harold, Matthew Robert. $3 1928015
245 1 4 $a The effects of wetting and drying on chromium and other metal mobility.
300 $a 175 p.
500 $a Source: Masters Abstracts International, Volume: 42-01, page: 0181.
500 $a Adviser: David T. Long.
502 $a Thesis (M.S.)--Michigan State University, 2003.
520 $a This study looks at the effects that wetting and drying has on Cr mobility in wetland soils. The source of the chromium was a former leather tannery that operated from the early 1900's to 1958. At the wetland site, the dominant form of Cr is Cr (III). A previous study done at the wetland site reported that soils that underwent saturation changes in the field released higher levels of chromium to solution during laboratory leaching studies. This study investigated four questions (1) is there evidence that wetting and drying enhances chromium mobility? (2) does the duration of drying affect chromium mobility? (3) do aerobic microbes play a role in chromium mobility during wetting and drying? (4) how does chromium behavior compare to other elements?
520 $a The results of this study indicate that wetting and drying affects chromium mobility. Concentrations of chromium increased under wetting and drying cycles and concentrations of chromium decreased when the soils are always wet. Soils that were not completely dried did not behave the same as samples that were always wet or completely dried. From the results of this study, the role of microbes in the mobilization of chromium can neither be supported nor denied. Finally, chromium behaves differently than Fe, Mn, and Sr under wetting and drying conditions.
590 $a School code: 0128.
650 4 $a Geochemistry. $3 539092
650 4 $a Environmental Sciences. $3 676987
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690 $a 0768
710 2 0 $a Michigan State University. $3 676168
773 0 $t Masters Abstracts International $g 42-01.
790 1 0 $a Long, David T., $e advisor
790 $a 0128
791 $a M.S.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1414647