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Solid -state NMR spectroscopic inves...

Mason, Harris Edward.

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Solid -state NMR spectroscopic investigation of structural and chemical defects in minerals.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Solid -state NMR spectroscopic investigation of structural and chemical defects in minerals./
Author:	Mason, Harris Edward.
Description:	173 p.
Notes:	Source: Dissertation Abstracts International, Volume: 71-03, Section: B, page: 1571.
Contained By:	Dissertation Abstracts International71-03B.
Subject:	Geochemistry. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3399755
ISBN:	9781109667011

Solid -state NMR spectroscopic investigation of structural and chemical defects in minerals.
Mason, Harris Edward.

Solid -state NMR spectroscopic investigation of structural and chemical defects in minerals. - 173 p.

Source: Dissertation Abstracts International, Volume: 71-03, Section: B, page: 1571.

Thesis (Ph.D.)--State University of New York at Stony Brook, 2009.

In the laboratory the chemical and structural composition minerals can often be carefully controlled. In nature, minerals can incorporate chemical and structural defects which do not affect the overall mineralogy. It is these defects which make particular minerals or mineral groups ideal for usage in a wide variety of geochemical applications. Phosphate defects in the carbonate minerals calcite and aragonite have been studied for applications in environmental remediation and for the development of paleorainfall and paleonutrient proxies. Defect incorporation in minerals of the apatite group has implications for the stability of bones and teeth as well as for using these minerals to remediate heavy metals.

ISBN: 9781109667011Subjects--Topical Terms:

539092
Geochemistry.

Solid -state NMR spectroscopic investigation of structural and chemical defects in minerals.
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020 $a 9781109667011
035 $a (MiAaPQ)AAI3399755
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100 1 $a Mason, Harris Edward. $3 3276847
245 1 0 $a Solid -state NMR spectroscopic investigation of structural and chemical defects in minerals.
300 $a 173 p.
500 $a Source: Dissertation Abstracts International, Volume: 71-03, Section: B, page: 1571.
500 $a Adviser: Brian L. Phillips.
502 $a Thesis (Ph.D.)--State University of New York at Stony Brook, 2009.
520 $a In the laboratory the chemical and structural composition minerals can often be carefully controlled. In nature, minerals can incorporate chemical and structural defects which do not affect the overall mineralogy. It is these defects which make particular minerals or mineral groups ideal for usage in a wide variety of geochemical applications. Phosphate defects in the carbonate minerals calcite and aragonite have been studied for applications in environmental remediation and for the development of paleorainfall and paleonutrient proxies. Defect incorporation in minerals of the apatite group has implications for the stability of bones and teeth as well as for using these minerals to remediate heavy metals.
520 $a This work focuses on the analysis of mineral defects using solid-state nuclear magnetic resonance (NMR) spectroscopy. The first studies involve the investigation of phosphorous (P) incorporation into calcite speleothems and aragonitic deep-sea coral skeletons as it relates to paleo-proxy development. By tracking P paleo moisture records can be divined from calcite speleothems and paleo-nutrient record can be obtained from aragonitic coral skeletons. In both cases 31P NMR spectroscopic results indicate the majority of P incorporates as incompatible phosphate defects in the carbonate mineral lattice, but associated crystalline calcium phosphate phases are seen in each. These observations have bearing on the applicability of geochemical models based on incompatible incorporation of phosphate to the development of these paleo-proxies.
520 $a The second set of studies focuses on defect incorporation into the apatite structure. Carbonate incorporation into hydroxylapatite (HAp), and fluorapatite (FAp) is investigated and how this relates to their use in remediation strategies. In HAp the proton bearing defects and sodium play important roles in accommodating the carbonate defects, but in FAp it is clear that F has a clearer role. Additionally, the lead containing apatite pyromorphite is also investigated due to their importance in remediation of Pb contaminated sites. These materials were studied as a function of Ca incorporation using 207Pb NMR spectroscopic methods and illustrate some of the limitation of NMR spectroscopy in the study of environmentally relevant systems.
590 $a School code: 0771.
650 4 $a Geochemistry. $3 539092
690 $a 0996
710 2 $a State University of New York at Stony Brook. $3 1019194
773 0 $t Dissertation Abstracts International $g 71-03B.
790 $a 0771
791 $a Ph.D.
792 $a 2009
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3399755