![Effect of linear alkylbenzene sulphonate (LAS) on the mineralization, metabolism and uptake of ^1^4C-phenanthrene in a model ecosystem (water-lava-plant-air) [An article from: Chemosphere]](https://www.ebooknetworking.net/books/B00/0RR/bigB000RR5IRG.jpg)
Effect of linear alkylbenzene sulphonate (LAS) on the mineralization, metabolism and uptake of ^1^4C-phenanthrene in a model ecosystem (water-lava-plant-air) [An article from: Chemosphere]
Book Details
Author(s)Jiang, X.
PublisherElsevier
ISBN / ASINB000RR5IRG
ISBN-13978B000RR5IR7
MarketplaceFrance 🇫🇷
Description
This digital document is a journal article from Chemosphere, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
The aim of this work was to evaluate the effect of linear alkylbenzene sulfonate (LAS, 200mgl^-^1) on the fate of phenanthrene in a model ecosystem ''water-lava-hydrophytes-air''. The experiments were conducted using two closed cultivation chamber systems. Rushes (Juncus effesus) were selected as a representative hydrophyte. Five hundred micrograms per liter of phenanthrene in a culture solution containing a ^1^4C-activity of 75@mCi per chamber was applied (i) to investigate the degradation of the labeled test substance and the transfer processes within the system; (ii) to determine the mass-balance possible and (iii) to detect the occurrence of volatile test substances, their volatile metabolites and the degradation end-product CO"2 in the gas phase. Most of the applied ^1^4C-activity was found in the plant (41-45%), in which ~95% was associated with plant roots and ~5% with shoots. The ^1^4C-activity recovered in the form of VOCs and CO"2 was measured in lava (18-29%, 8-11%), and in the culture solution (10-14% and 1%), respectively. Majority of the applied ^1^4C-activity existed in two forms, i.e. (1) polar metabolites (26%), of which 91% were found in plant roots, and (2) un-extractable residues (23%), most of which were in plant roots (40%) and bounded to lava (58%). The presence of LAS significantly increased the volatilization of phenanthrene and its metabolites, inhibited its mineralization and decreased the level of ^1^4C-activity in lava. Moreover, LAS reduced the phenanthrene level in plant roots.
Description:
The aim of this work was to evaluate the effect of linear alkylbenzene sulfonate (LAS, 200mgl^-^1) on the fate of phenanthrene in a model ecosystem ''water-lava-hydrophytes-air''. The experiments were conducted using two closed cultivation chamber systems. Rushes (Juncus effesus) were selected as a representative hydrophyte. Five hundred micrograms per liter of phenanthrene in a culture solution containing a ^1^4C-activity of 75@mCi per chamber was applied (i) to investigate the degradation of the labeled test substance and the transfer processes within the system; (ii) to determine the mass-balance possible and (iii) to detect the occurrence of volatile test substances, their volatile metabolites and the degradation end-product CO"2 in the gas phase. Most of the applied ^1^4C-activity was found in the plant (41-45%), in which ~95% was associated with plant roots and ~5% with shoots. The ^1^4C-activity recovered in the form of VOCs and CO"2 was measured in lava (18-29%, 8-11%), and in the culture solution (10-14% and 1%), respectively. Majority of the applied ^1^4C-activity existed in two forms, i.e. (1) polar metabolites (26%), of which 91% were found in plant roots, and (2) un-extractable residues (23%), most of which were in plant roots (40%) and bounded to lava (58%). The presence of LAS significantly increased the volatilization of phenanthrene and its metabolites, inhibited its mineralization and decreased the level of ^1^4C-activity in lava. Moreover, LAS reduced the phenanthrene level in plant roots.
