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Degradation kinetics and mobility of...

Carlson, Jules C.

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Degradation kinetics and mobility of chlortetracycline, tylosin, and monensin in an agricultural soil in Northumberland County, Ontario.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Degradation kinetics and mobility of chlortetracycline, tylosin, and monensin in an agricultural soil in Northumberland County, Ontario./
作者:	Carlson, Jules C.
面頁冊數:	86 p.
附註:	Source: Masters Abstracts International, Volume: 44-01, page: 0355.
Contained By:	Masters Abstracts International44-01.
標題:	Chemistry, Inorganic. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MR02453
ISBN:	9780494024539

Degradation kinetics and mobility of chlortetracycline, tylosin, and monensin in an agricultural soil in Northumberland County, Ontario.
Carlson, Jules C.

Degradation kinetics and mobility of chlortetracycline, tylosin, and monensin in an agricultural soil in Northumberland County, Ontario. - 86 p.

Source: Masters Abstracts International, Volume: 44-01, page: 0355.

Thesis (M.Sc.)--University of Toronto (Canada), 2005.

A robust high-throughput method was developed to extract the three growth-promoting antibiotics, tylosin (TYL), chlortetracycline (CTC), and monensin (MON) from soil with analysis by Electrospray Liquid Chromatography tandem Mass Spectrometry (ESI-LCMS-MS). Dissipation rate studies in a farm field soil revealed TYL, CTC, and MON followed first order dissipation kinetics with half-lives of 4.5, 24, and 3.3 days with manure addition, and 6.1, 21, and 3.8 days without manure. Manure application significantly increased TYL dissipation rate, perhaps due to the introduced microbial flora, but had no significant effect on CTC or MON. CTC was the only antibiotic detected at 25 to 35 cm depth and only up to 2% of the initial concentration in a sandy loam soil. These antibiotics are therefore expected to primarily degrade in agricultural soils with similar or more retentive soil properties before moving to a greater depth or to groundwater in significant concentrations in most agricultural systems.

ISBN: 9780494024539Subjects--Topical Terms:

517253
Chemistry, Inorganic.

Degradation kinetics and mobility of chlortetracycline, tylosin, and monensin in an agricultural soil in Northumberland County, Ontario.
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502 $a Thesis (M.Sc.)--University of Toronto (Canada), 2005.
520 $a A robust high-throughput method was developed to extract the three growth-promoting antibiotics, tylosin (TYL), chlortetracycline (CTC), and monensin (MON) from soil with analysis by Electrospray Liquid Chromatography tandem Mass Spectrometry (ESI-LCMS-MS). Dissipation rate studies in a farm field soil revealed TYL, CTC, and MON followed first order dissipation kinetics with half-lives of 4.5, 24, and 3.3 days with manure addition, and 6.1, 21, and 3.8 days without manure. Manure application significantly increased TYL dissipation rate, perhaps due to the introduced microbial flora, but had no significant effect on CTC or MON. CTC was the only antibiotic detected at 25 to 35 cm depth and only up to 2% of the initial concentration in a sandy loam soil. These antibiotics are therefore expected to primarily degrade in agricultural soils with similar or more retentive soil properties before moving to a greater depth or to groundwater in significant concentrations in most agricultural systems.
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