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Hydroxyl radical reaction and lantha...

Cullen, Thomas Donovan.

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Hydroxyl radical reaction and lanthanide ion complexation kinetics of DTPA.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Hydroxyl radical reaction and lanthanide ion complexation kinetics of DTPA./
Author:	Cullen, Thomas Donovan.
Description:	63 p.
Notes:	Source: Masters Abstracts International, Volume: 52-03.
Contained By:	Masters Abstracts International52-03(E).
Subject:	Chemistry, Organic. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1524188
ISBN:	9781303521652

Hydroxyl radical reaction and lanthanide ion complexation kinetics of DTPA.
Cullen, Thomas Donovan.

Hydroxyl radical reaction and lanthanide ion complexation kinetics of DTPA. - 63 p.

Source: Masters Abstracts International, Volume: 52-03.

Thesis (M.S.)--California State University, Long Beach, 2013.

The rate constants for hydroxyl radical reaction with multiple protonated forms of free diethylenetriaminepentaacetic acid {DTP A) as well as with DTPA complexed with a number of lanthanide metal ions were determined using electron pulse radio lysis and transient absorption spectroscopy. The rate constants for the most protonated DTP A species were ≈ 2.5 x 10 9 M-1s-1, but for H2-DTPA 3- a higher value of 4.1 x 109 M-1s -1 at 20-23 °C was obtained. Thermodynamic parameters were also determined for these protonated DTPA species. The metal-complexed DTPA rate constants at pH 3.0-5.0 were typically faster than for the free DTP A values, and varied depending on the metal IOn.

ISBN: 9781303521652Subjects--Topical Terms:

516206
Chemistry, Organic.

Hydroxyl radical reaction and lanthanide ion complexation kinetics of DTPA.
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100 1 $a Cullen, Thomas Donovan. $3 3168734
245 1 0 $a Hydroxyl radical reaction and lanthanide ion complexation kinetics of DTPA.
300 $a 63 p.
500 $a Source: Masters Abstracts International, Volume: 52-03.
500 $a Adviser: Stephen P. Mezyk.
502 $a Thesis (M.S.)--California State University, Long Beach, 2013.
520 $a The rate constants for hydroxyl radical reaction with multiple protonated forms of free diethylenetriaminepentaacetic acid {DTP A) as well as with DTPA complexed with a number of lanthanide metal ions were determined using electron pulse radio lysis and transient absorption spectroscopy. The rate constants for the most protonated DTP A species were ≈ 2.5 x 10 9 M-1s-1, but for H2-DTPA 3- a higher value of 4.1 x 109 M-1s -1 at 20-23 °C was obtained. Thermodynamic parameters were also determined for these protonated DTPA species. The metal-complexed DTPA rate constants at pH 3.0-5.0 were typically faster than for the free DTP A values, and varied depending on the metal IOn.
520 $a The complexation kinetics ofDTPA with multiple lanthanide metal ions was measured using a stopped-flow system. The measured rate constants ranged from 103-104 M-1s-1. Thermodynamic parameters were also determined for both the complexation ofEu 3+ and Lu3+. It was observed that as the ionic radius of the metal ion being complexed increased, so did the complexation rate constant.
520 $a This study will increase understanding of the chemistry occurring within TALSPEAK, which is necessary in order to optimize this process.
590 $a School code: 6080.
650 4 $a Chemistry, Organic. $3 516206
650 4 $a Chemistry, Inorganic. $3 517253
690 $a 0490
690 $a 0488
710 2 $a California State University, Long Beach. $b Chemistry. $3 3168735
773 0 $t Masters Abstracts International $g 52-03(E).
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791 $a M.S.
792 $a 2013
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1524188