RT journal article
T1 Molecular structure and biodegradation kinetics of Linear Alkylbenzene Sulphonates in sea water.
A1 Perales Vargas-Machuca, José Antonio
A1 Manzano Quiñones, Manuel Alejandro
A1 Garrido Pérez, Carmen
A1 Sales Márquez, Diego
A1 Quiroga Alonso, José María
A2 Tecnologías del Medio Ambiente
K1 Biodegradation
K1 Surfactan
K1 Linear alkylbenzenesulfonate
K1 Molecular structure
K1 Kinetic
K1 Isomeric composition
K1 Bay of Cádiz
AB The present paper describes the results of the application of the biodegradation test proposed by the United States Environmental Protection Agency (USEPA) “Biodegradability in sea water” Office of Prevention, Pesticides, and Toxic Substances (OPPTS) 835.3160, to Linear Alkylbenzene Sulphonate (LAS), the synthetic surfactant with the highest consumption volume on a world-wide basis. High performance liquid chromatography (HPLC) has been employed for the separation and quantification of the different homologues and isomers of the surfactant. Water from the Bay of Cádiz (South–West of the Iberian peninsula) has been used as test medium. The results indicate how both lag and t50 time shows a significant linear relationship with the length of the alkyl chain of the homologue; the effect of this is that the homologues of longer chain length not only begin to degrade first but also degrade at a faster rate. Regarding the isomeric composition, it is observed that as the percentage of biodegradation increases, there is an increase in the proportion of internal isomers, in comparison with the isomeric relationships of the original test substance
YR 2007
FD 2007-10
LK http://hdl.handle.net/10498/19658
UL http://hdl.handle.net/10498/19658
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 12-nov-2026