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Dry deposition of atmospheric mercur...

Liu, Yan.

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Dry deposition of atmospheric mercury to aquatic ecosystem.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Dry deposition of atmospheric mercury to aquatic ecosystem./
作者:	Liu, Yan.
面頁冊數:	239 p.
附註:	Advisers: D. Waite; G. Huang.
Contained By:	Masters Abstracts International39-03.
標題:	Environmental Sciences. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MQ54723
ISBN:	061254723X

Dry deposition of atmospheric mercury to aquatic ecosystem.
Liu, Yan.

Dry deposition of atmospheric mercury to aquatic ecosystem. - 239 p.

Advisers: D. Waite; G. Huang.

Thesis (M.A.Sc.)--The University of Regina (Canada), 2000.

In this study, a total of 62 aqueous samples of varying pH (2&sim;12) and ion strengths (0&sim;5000 mg/L) were analyzed for Hg<super>0</super> dry deposition in the specified exposure period (2 weeks). They can be categorized into 3 groups with different pH levels. Group I was run with the deionized water, and the pH value for each sample was around 7. Group 2 included the different acid solutions (HCl, HNO3, and H2SO 4), with pH values around 2 and 4, respectively. Group 3 was designed for alkaline solutions (NaOH), with pH around 10 and 12, respectively. Two types of deposited mercury concentrations (easily reducible Hg [Hger ] and total Hg [Hgtot]) were measured sequentially for each sample. The mercury concentrations of the samples were calculated based on a calibration graph, and were obtained by the same procedure with standard solutions of mercury.

ISBN: 061254723XSubjects--Topical Terms:

676987
Environmental Sciences.

Dry deposition of atmospheric mercury to aquatic ecosystem.
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500 $a Advisers: D. Waite; G. Huang.
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502 $a Thesis (M.A.Sc.)--The University of Regina (Canada), 2000.
520 $a In this study, a total of 62 aqueous samples of varying pH (2&sim;12) and ion strengths (0&sim;5000 mg/L) were analyzed for Hg<super>0</super> dry deposition in the specified exposure period (2 weeks). They can be categorized into 3 groups with different pH levels. Group I was run with the deionized water, and the pH value for each sample was around 7. Group 2 included the different acid solutions (HCl, HNO3, and H2SO 4), with pH values around 2 and 4, respectively. Group 3 was designed for alkaline solutions (NaOH), with pH around 10 and 12, respectively. Two types of deposited mercury concentrations (easily reducible Hg [Hger ] and total Hg [Hgtot]) were measured sequentially for each sample. The mercury concentrations of the samples were calculated based on a calibration graph, and were obtained by the same procedure with standard solutions of mercury.
520 $a A Plexiglas chamber containing metallic mercury and solution samples was constructed for carrying out the metallic mercury deposition experiments. The mercury concentrations in the testing solutions were determined sequentially. With the consideration of possible mechanisms in the metallic mercury deposition process, several potential factors of solutions were tested. (Abstract shortened by UMI.)
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