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Quantification of trace elements and...

Upadhyay, Nabin.

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Quantification of trace elements and speciation of iron in atmospheric particulate matter.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Quantification of trace elements and speciation of iron in atmospheric particulate matter./
Author:	Upadhyay, Nabin.
Description:	152 p.
Notes:	Source: Dissertation Abstracts International, Volume: 71-06, Section: B, page: 3540.
Contained By:	Dissertation Abstracts International71-06B.
Subject:	Atmospheric Chemistry. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3410521
ISBN:	9781124026244

Quantification of trace elements and speciation of iron in atmospheric particulate matter.
Upadhyay, Nabin.

Quantification of trace elements and speciation of iron in atmospheric particulate matter. - 152 p.

Source: Dissertation Abstracts International, Volume: 71-06, Section: B, page: 3540.

Thesis (Ph.D.)--Arizona State University, 2010.

Trace metal species play important roles in atmospheric redox processes and in the generation of oxidants in cloud systems. The chemical impact of these elements on atmospheric and cloud chemistry is dependent on their occurrence, solubility and speciation. First, analytical protocols have been developed to determine trace elements in particulate matter samples collected for carbonaceous analysis. The validated novel protocols were applied to the determination of trace elements in particulate samples collected in the remote marine atmosphere and urban areas in Arizona to study air pollution issues.

ISBN: 9781124026244Subjects--Topical Terms:

1669583
Atmospheric Chemistry.

Quantification of trace elements and speciation of iron in atmospheric particulate matter.
LDR:02983nam 2200325 4500 001 1395422
005 20110518115246.5
008 130515s2010 ||||||||||||||||| ||eng d
020 $a 9781124026244
035 $a (UMI)AAI3410521
035 $a AAI3410521
040 $a UMI $c UMI
100 1 $a Upadhyay, Nabin. $3 1674108
245 1 0 $a Quantification of trace elements and speciation of iron in atmospheric particulate matter.
300 $a 152 p.
500 $a Source: Dissertation Abstracts International, Volume: 71-06, Section: B, page: 3540.
500 $a Adviser: Pierre Herckes.
502 $a Thesis (Ph.D.)--Arizona State University, 2010.
520 $a Trace metal species play important roles in atmospheric redox processes and in the generation of oxidants in cloud systems. The chemical impact of these elements on atmospheric and cloud chemistry is dependent on their occurrence, solubility and speciation. First, analytical protocols have been developed to determine trace elements in particulate matter samples collected for carbonaceous analysis. The validated novel protocols were applied to the determination of trace elements in particulate samples collected in the remote marine atmosphere and urban areas in Arizona to study air pollution issues.
520 $a The second part of this work investigates on solubility and speciation in environmental samples. A detailed study on the impact of the nature and strength of buffer solutions on solubility and speciation of iron lead to a robust protocol, allowing for comparative measurements in matrices representative of cloud water conditions. Application of this protocol to samples from different environments showed low iron solubility (less than 1%) in dust-impacted events and higher solubility (5%) in anthropogenically impacted urban samples. In most cases, Fe(II) was the dominant oxidation state in the soluble fraction of iron.
520 $a The analytical protocol was then applied to investigate iron processing by fogs. Field observations showed that only a small fraction (1%) of iron was scavenged by fog droplets for which each of the soluble and insoluble fraction were similar. A coarse time resolution limited detailed insights into redox cycling within fog system. Overall results suggested that the major iron species in the droplets was Fe(1I) (80% of soluble iron).
520 $a Finally, the occurrence and sources of emerging organic pollutants in the urban atmosphere were investigated. Synthetic musk species are ubiquitous in the urban environment (less than 5 ng m-3) and investigations at wastewater treatment plants showed that wastewater aeration basins emit a substantial amount of these species to the atmosphere.
590 $a School code: 0010.
650 4 $a Atmospheric Chemistry. $3 1669583
650 4 $a Atmospheric Sciences. $3 1019179
650 4 $a Environmental Sciences. $3 676987
690 $a 0371
690 $a 0725
690 $a 0768
710 2 $a Arizona State University. $3 1017445
773 0 $t Dissertation Abstracts International $g 71-06B.
790 1 0 $a Herckes, Pierre, $e advisor
790 $a 0010
791 $a Ph.D.
792 $a 2010
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3410521