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Mutagenicity of soil from an old gas...

Lynes, Krista.

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Mutagenicity of soil from an old gasworks site during bioremediation.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Mutagenicity of soil from an old gasworks site during bioremediation./
Author:	Lynes, Krista.
Description:	160 p.
Notes:	Source: Masters Abstracts International, Volume: 45-02, page: 0850.
Contained By:	Masters Abstracts International45-02.
Subject:	Environmental Sciences. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MR18370
ISBN:	9780494183700

Mutagenicity of soil from an old gasworks site during bioremediation.
Lynes, Krista.

Mutagenicity of soil from an old gasworks site during bioremediation. - 160 p.

Source: Masters Abstracts International, Volume: 45-02, page: 0850.

Thesis (M.Sc.)--Carleton University (Canada), 2006.

PAHs and nitroaromatic compounds are toxic, mutagenic and carcinogenic environmental pollutants that are prevalent in petroleum contaminated soil and pose a serious threat to environmental and human health. Bioremediation is an economic and efficient means to remediate contaminated soil. This study examined the mutagenicity of soil from an aged gasworks site as it underwent bioslurry treatment. Soil extracts were separated into two fractions, one containing PAHs (non-polar neutrals) and the other, N -heterocyclic and oxy-PAHs (polar aromatic) compounds. Each fraction was tested with and without metabolic activation. Overall, the mutagenicity of both fractions in the presence of metabolic activation demonstrated a net increase. Only the direct mutagenicity of the polar aromatic fraction exhibited a net decrease. The expected mutagenicity, the summed mutagenicity of the individual chemicals in each fraction, greatly underestimated the direct mutagenicity of both fractions. Only in the presence of metabolic activation did the predicted values exceed the observed. It is possible that the unexpected mutagenicity is the result of bacterial degradative by-products suggesting that mutagenicity monitoring of contaminated sites is required during bioremediation.

ISBN: 9780494183700Subjects--Topical Terms:

676987
Environmental Sciences.

Mutagenicity of soil from an old gasworks site during bioremediation.
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245 1 0 $a Mutagenicity of soil from an old gasworks site during bioremediation.
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500 $a Source: Masters Abstracts International, Volume: 45-02, page: 0850.
502 $a Thesis (M.Sc.)--Carleton University (Canada), 2006.
520 $a PAHs and nitroaromatic compounds are toxic, mutagenic and carcinogenic environmental pollutants that are prevalent in petroleum contaminated soil and pose a serious threat to environmental and human health. Bioremediation is an economic and efficient means to remediate contaminated soil. This study examined the mutagenicity of soil from an aged gasworks site as it underwent bioslurry treatment. Soil extracts were separated into two fractions, one containing PAHs (non-polar neutrals) and the other, N -heterocyclic and oxy-PAHs (polar aromatic) compounds. Each fraction was tested with and without metabolic activation. Overall, the mutagenicity of both fractions in the presence of metabolic activation demonstrated a net increase. Only the direct mutagenicity of the polar aromatic fraction exhibited a net decrease. The expected mutagenicity, the summed mutagenicity of the individual chemicals in each fraction, greatly underestimated the direct mutagenicity of both fractions. Only in the presence of metabolic activation did the predicted values exceed the observed. It is possible that the unexpected mutagenicity is the result of bacterial degradative by-products suggesting that mutagenicity monitoring of contaminated sites is required during bioremediation.
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650 4 $a Environmental Sciences. $3 676987
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