Solar energy conversion: list of efficiencies and some theoretical considerations: theoretical considerations part II: results
Solar energy conversion: list of efficiencies and some theoretical considerations: theoretical considerations part II: results
The effects of acidification and liming on the mobilization of benzo(a)pyrene (BaP) were studied in a long-term column experiment with a sandy topsoil spiked with this hydrophobic compound at a concentration of 100 mg kg-1. Soil acidification to pH 3.3 initially caused a decreased release of BaP, but in the course of the 14-months study, BaP-concentrations in the leachates surpassed control levels 10-15-fold. This is attributed to DOM-enhanced solubility of BaP, although no correlation with DOC-concentrations was found. Instead, increased DOM-sorptivity is attributed to the increases in DOM-aromaticity and DOM-size which occurs in response to decreasing Ca-concentrations and increasing pH in the solutions. A short term BaP-mobilization in the lime treatment is not related to these parameters but may indicate the participation of heavy metals in DOM-BaP-interactions.
231-255
Marschner, B.
23fb514a-63b0-4d24-bb00-07aa44fe708e
Landsberg, P.T.
430ba980-a590-4d7c-8c03-9ecf192c21d3
Badescu, V.
3a1a0634-9195-47d7-9c0b-ea6b5f80ea65
1998
Marschner, B.
23fb514a-63b0-4d24-bb00-07aa44fe708e
Landsberg, P.T.
430ba980-a590-4d7c-8c03-9ecf192c21d3
Badescu, V.
3a1a0634-9195-47d7-9c0b-ea6b5f80ea65
Marschner, B., Landsberg, P.T. and Badescu, V.
(1998)
Solar energy conversion: list of efficiencies and some theoretical considerations: theoretical considerations part II: results.
Progress in Quantum Electronics, 22 (4), .
(doi:10.1016/S0079-6727(98)00013-5).
Abstract
The effects of acidification and liming on the mobilization of benzo(a)pyrene (BaP) were studied in a long-term column experiment with a sandy topsoil spiked with this hydrophobic compound at a concentration of 100 mg kg-1. Soil acidification to pH 3.3 initially caused a decreased release of BaP, but in the course of the 14-months study, BaP-concentrations in the leachates surpassed control levels 10-15-fold. This is attributed to DOM-enhanced solubility of BaP, although no correlation with DOC-concentrations was found. Instead, increased DOM-sorptivity is attributed to the increases in DOM-aromaticity and DOM-size which occurs in response to decreasing Ca-concentrations and increasing pH in the solutions. A short term BaP-mobilization in the lime treatment is not related to these parameters but may indicate the participation of heavy metals in DOM-BaP-interactions.
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Published date: 1998
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Local EPrints ID: 29479
URI: http://eprints.soton.ac.uk/id/eprint/29479
ISSN: 0079-6727
PURE UUID: 8ed0a577-ca25-4ae0-9bf1-b936ec7bce5a
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Date deposited: 13 Mar 2007
Last modified: 15 Mar 2024 07:32
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Author:
B. Marschner
Author:
P.T. Landsberg
Author:
V. Badescu
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