JEQ
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
 QUICK SEARCH:   [advanced]


     


This Article
Right arrow Abstract Freely available
Right arrow Full Text Free
Right arrow Full Text (PDF) Free
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Related articles in JEQ
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via ISI Web of Science (6)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Xia, K.
Right arrow Articles by Jeong, C. Y.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Xia, K.
Right arrow Articles by Jeong, C. Y.
Agricola
Right arrow Articles by Xia, K.
Right arrow Articles by Jeong, C. Y.
Related Collections
Right arrow Municipal Wastes
Right arrow Organic Compounds
Right arrow Soil Pollution
Right arrow Soil Chemistry

Photodegradation of the Endocrine-Disrupting Chemical 4-Nonylphenol in Biosolids Applied to Soil

Kang Xiaa,* and Chang Yoon Jeongb

a Department of Crop and Soil Sciences, 3111 Plant Sciences Building, University of Georgia, Athens, GA 30602
b Department of Renewable Resources, University of Louisiana, P.O. Box 44650, Lafayette, LA 70504



View larger version (16K):

[in a new window]
 
Fig. 1. Schematic diagram for the cell used in the photodegradation study (modified from Balmer et al., 2000). Pyrex glass is adequate for our experiment in which near-soil-surface sunlight (terrestrial light) (wavelength > 290 nm; Schwarzenbach et al., 1993) is of interest. Pyrex glass does not completely block UV light between 290 and 325 nm. It is more transparent to UV light with wavelength > 325 nm than quartz.

 


View larger version (19K):

[in a new window]
 
Fig. 2. Concentrations of 4-nonylphenol (4-NP) in biosolids in top-5-mm and bottom-10-mm layers exposed (solid circle) and unexposed (solid triangle) to artificial sunlight. The term C/Ci is the concentration ratio of 4-NP at each sampling point to its initial concentration.

 


View larger version (20K):

[in a new window]
 
Fig. 3. Concentrations of 4-nonylphenol (4-NP) in compost in top-5-mm and bottom-10-mm layers exposed (solid circle) and unexposed (solid triangle) to artificial sunlight. The term C/Ci is the concentration ratio of 4-NP at each sampling point to its initial concentration.

 


View larger version (28K):

[in a new window]
 
Fig. 4. Levels of nonylphenol polyethoxylates (NPnEOs) in the top-5-mm layer of biosolids exposed (open triangle) and unexposed (open circle) to artificial sunlight.

 


View larger version (18K):

[in a new window]
 
Fig. 5. Concentrations of 4-nonylphenol (4-NP) in soil and biosolids mixture (1:1 weight ratio) in the top-5-mm layer exposed (solid circle) and unexposed (solid triangle) to artificial sunlight. The term C/Ci is the concentration ratio of 4-NP at each sampling point to its initial concentration.

 


View larger version (10K):

[in a new window]
 
Fig. 6. Photolysis of 4-nonylphenol (4-NP) in a solution containing fulvic acid at 5 mg L–1. The term C/Ci is the concentration ratio of 4-NP at each sampling point to its initial concentration.

 





HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Agronomy Journal Crop Science
Journal of Natural Resources
and Life Sciences Education
Vadose Zone Journal
Soil Science Society of America Journal Journal of Plant Registrations The Plant Genome
Copyright © 2004 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.