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Determination of organic pollutions ...

Lakshmi Narayanan, Sreedharan.

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Determination of organic pollutions in natural water by LC-MS/MS.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Determination of organic pollutions in natural water by LC-MS/MS./
Author:	Lakshmi Narayanan, Sreedharan.
Description:	66 p.
Notes:	Source: Masters Abstracts International, Volume: 52-04.
Contained By:	Masters Abstracts International52-04(E).
Subject:	Chemistry, General. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1548493
ISBN:	9781303571008

Determination of organic pollutions in natural water by LC-MS/MS.
Lakshmi Narayanan, Sreedharan.

Determination of organic pollutions in natural water by LC-MS/MS. - 66 p.

Source: Masters Abstracts International, Volume: 52-04.

Thesis (M.S.)--Tennessee Technological University, 2013.

Organic pollution of waters by human and animal wastes is a longstanding problem and has serious impacts to water quality and to aquatic life. Coprostanol has been used for several decades to identify pollution of waters by sewage. Bile acids and fecal sterols are now considered to be indicators of pollution by agricultural animal production. I have developed a high performance liquid chromatography - atmospheric pressure chemical ionization mass spectrometry (LC-MS/MS) method for simultaneous determination of sterols and bile acids. I compared reversed phase chromatography of the compounds with two chromatographic columns, the ZORBAX Eclipse XDB-C8 and Restek Ultra II C18 columns. The ZORBAX Eclipse XDB-C8 column allows separation of the compounds within 38 min, while separation with the Restek Ultra II C18 requires more than 120 min. I optimized the mobile phase for the separation. The final method uses the ZORBAX Eclipse XDB- column with a gradient of acetonitrile:MeOH/ 0.2 mM ammonium acetate in water at a flow rate of 0.5/min and a column maintained at ambient temperature. The developed method shows a good linearity and high repeatability. The method was applied for the determination of selected bile acids and sterols in wastewater treatment plant (WWTP) influent and effluent, and stream water samples suspected to be impacted by the WWTP effluent, septic system leachate, and cattle pasture runoff.

ISBN: 9781303571008Subjects--Topical Terms:

1021807
Chemistry, General.

Determination of organic pollutions in natural water by LC-MS/MS.
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100 1 $a Lakshmi Narayanan, Sreedharan. $3 2104604
245 1 0 $a Determination of organic pollutions in natural water by LC-MS/MS.
300 $a 66 p.
500 $a Source: Masters Abstracts International, Volume: 52-04.
500 $a Adviser: John Harwood.
502 $a Thesis (M.S.)--Tennessee Technological University, 2013.
520 $a Organic pollution of waters by human and animal wastes is a longstanding problem and has serious impacts to water quality and to aquatic life. Coprostanol has been used for several decades to identify pollution of waters by sewage. Bile acids and fecal sterols are now considered to be indicators of pollution by agricultural animal production. I have developed a high performance liquid chromatography - atmospheric pressure chemical ionization mass spectrometry (LC-MS/MS) method for simultaneous determination of sterols and bile acids. I compared reversed phase chromatography of the compounds with two chromatographic columns, the ZORBAX Eclipse XDB-C8 and Restek Ultra II C18 columns. The ZORBAX Eclipse XDB-C8 column allows separation of the compounds within 38 min, while separation with the Restek Ultra II C18 requires more than 120 min. I optimized the mobile phase for the separation. The final method uses the ZORBAX Eclipse XDB- column with a gradient of acetonitrile:MeOH/ 0.2 mM ammonium acetate in water at a flow rate of 0.5/min and a column maintained at ambient temperature. The developed method shows a good linearity and high repeatability. The method was applied for the determination of selected bile acids and sterols in wastewater treatment plant (WWTP) influent and effluent, and stream water samples suspected to be impacted by the WWTP effluent, septic system leachate, and cattle pasture runoff.
590 $a School code: 0390.
650 4 $a Chemistry, General. $3 1021807
650 4 $a Chemistry, Analytical. $3 586156
650 4 $a Chemistry, Organic. $3 516206
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690 $a 0490
710 2 $a Tennessee Technological University. $b Chemistry. $3 2096656
773 0 $t Masters Abstracts International $g 52-04(E).
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792 $a 2013
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1548493