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Nitrous Acid Cycling and Reaction on Soil Surfaces.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Nitrous Acid Cycling and Reaction on Soil Surfaces./
Author:	Donaldson, Melissa.
Description:	1 online resource (163 pages)
Notes:	Source: Dissertation Abstracts International, Volume: 78-09(E), Section: B.
Subject:	Environmental science. -
Online resource:	click for full text (PQDT)
ISBN:	9781369756524

Nitrous Acid Cycling and Reaction on Soil Surfaces.
Donaldson, Melissa.

Nitrous Acid Cycling and Reaction on Soil Surfaces. - 1 online resource (163 pages)

Source: Dissertation Abstracts International, Volume: 78-09(E), Section: B.

Thesis (Ph.D.)--Indiana University, 2017.

Includes bibliographical references

Nitrous acid (HONO) plays a significant role in regulating the oxidative capacity of the atmosphere and is a precursor to ozone, which is both a greenhouse gas and an EPA criteria pollutant harmful to human and environmental health. Despite extensive research over three decades, HONO formation and loss processes are not completely understood, and current atmospheric models do not accurately predict nighttime or daytime levels, but ground surfaces may explain some of these inconsistencies. Soil and soil-derived dust coats large areas of both rural and urban areas and, as such, represents an important surface for both the production and deposition of HONO. We hypothesize that soil is a significant source and sink of HONO and our aim has been to increase our understanding of the environmental parameters and the chemical mechanisms responsible. Our first study characterizes the uptake of atmospherically relevant concentrations of HONO on soil surfaces at varied relative humidity and relates those trends to the reactive soil surface as it transitions from what is predominantly a porous and dry mineral surface to one that is coated by thin water films. Our second study demonstrates that the surface acidity of boundary layer minerals, especially aluminum and iron (hydr)oxides, plays a critical role in the ability of a surface to release HONO or sequester it as nitrite (NO 2-) or the nitroacidium ion (H2ONO +). Our final study focuses on the chemical reactions of HONO with soil and humic substances to better understand the reactive sites and whether those reactions are irreversible or a temporary reservoir. The results significantly improve our understanding of the partitioning and fate of HONO and our ability to model its net flux from soil surfaces.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781369756524Subjects--Topical Terms:

1179128
Environmental science.
Index Terms--Genre/Form:

554714
Electronic books.

Nitrous Acid Cycling and Reaction on Soil Surfaces.
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100 1 $a Donaldson, Melissa. $3 1185671
245 1 0 $a Nitrous Acid Cycling and Reaction on Soil Surfaces.
264 0 $c 2017
300 $a 1 online resource (163 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertation Abstracts International, Volume: 78-09(E), Section: B.
500 $a Adviser: Jonathan D. Raff.
502 $a Thesis (Ph.D.)--Indiana University, 2017.
504 $a Includes bibliographical references
520 $a Nitrous acid (HONO) plays a significant role in regulating the oxidative capacity of the atmosphere and is a precursor to ozone, which is both a greenhouse gas and an EPA criteria pollutant harmful to human and environmental health. Despite extensive research over three decades, HONO formation and loss processes are not completely understood, and current atmospheric models do not accurately predict nighttime or daytime levels, but ground surfaces may explain some of these inconsistencies. Soil and soil-derived dust coats large areas of both rural and urban areas and, as such, represents an important surface for both the production and deposition of HONO. We hypothesize that soil is a significant source and sink of HONO and our aim has been to increase our understanding of the environmental parameters and the chemical mechanisms responsible. Our first study characterizes the uptake of atmospherically relevant concentrations of HONO on soil surfaces at varied relative humidity and relates those trends to the reactive soil surface as it transitions from what is predominantly a porous and dry mineral surface to one that is coated by thin water films. Our second study demonstrates that the surface acidity of boundary layer minerals, especially aluminum and iron (hydr)oxides, plays a critical role in the ability of a surface to release HONO or sequester it as nitrite (NO 2-) or the nitroacidium ion (H2ONO +). Our final study focuses on the chemical reactions of HONO with soil and humic substances to better understand the reactive sites and whether those reactions are irreversible or a temporary reservoir. The results significantly improve our understanding of the partitioning and fate of HONO and our ability to model its net flux from soil surfaces.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Environmental science. $3 1179128
655 7 $a Electronic books. $2 local $3 554714
690 $a 0768
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a Indiana University. $b Environmental Science. $3 1185672
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10271254 $z click for full text (PQDT)