HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (10) Citing Articles via Google Scholar Google Scholar Articles by Mortensen, G.K. Articles by Grøn, C. Search for Related Content PubMed PubMed Citation Articles by Mortensen, G.K. Articles by Grøn, C. GeoRef GeoRef Citation Agricola Articles by Mortensen, G.K. Articles by Grøn, C. Related Collections Municipal Waste Other Waste Management Organic Compounds Other Environmental Contamination Nutrient Management Plant and Environment Interactions Soil Pollution

TECHNICAL REPORT
Organic Compounds in the Environment

Influence of Plant Growth on Degradation of Linear Alkylbenzene Sulfonate in Sludge-Amended Soil

^a Risø National Lab., Plant Biology and Biogeochemistry Dep., Building PBK-124, Post Office Box 49, DK-4000 Roskilde, Denmarkl
^b Dep. of Agricultural Sciences, The Royal Veterinary and Agricultural Univ., Agrovej 10, DK-2630 Taastrup, Denmark
^c DHI-Water and Environment, Agern Allé 11, DK-2970 Hørsholm, Denmark

* Corresponding author (gerda.krog.mortensen{at}risoe.dk)

Widespread application of sewage sludge to agricultural soils in Denmark has led to concern about the possible accumulation and effects of linear alkylbenzene sulfonate (LAS) in the soil ecosystem. Therefore, we have studied the uptake and degradation of LAS in greenhouse pot experiments. Sewage sludge was incorporated into a sandy soil to give a range from very low to very high applications (0.4 to 90 Mg dry wt. ha^-1). In addition, LAS was added as water solutions. The soil was transferred to pots and sown with barley (Hordeum vulgare L. cv. Apex), rape (Brassica napus L. cv. Hyola 401), or carrot (Daucus carota L.). Also, plant-free controls were established. For all additions there was no plant uptake above the detection limit at 0.5 mg LAS kg^-1 d.w, but plant growth stimulated the degradation. With a growth period of 30 d, LAS concentrations in soil from pots with rape had dropped from 27 to 1.4 mg kg^-1 dry wt., but in plant-free pots the concentration decreased only to 2.4 mg kg^-1 dry wt. When LAS was added as a spike, the final concentration in soil from planted pots was 0.7 mg kg^-1 dry wt., but in pots without plants the final concentration was much higher (2.5 mg kg^-1 dry wt.). During degradation, the relative fraction of homologues C10, C11, and C12 decreased, while C13 increased.

Abbreviations: LAS, linear alkylbenzene sulfonate

This article has been cited by other articles:

				A. M. Jacobsen, G. K. Mortensen, and H. C. B. Hansen Degradation and Mobility of Linear Alkylbenzene Sulfonate and Nonylphenol in Sludge-Amended Soil J. Environ. Qual., January 1, 2004; 33(1): 232 - 240. [Abstract] [Full Text] [PDF]