SciELO - Scientific Electronic Library Online

 
vol.28 número2Presencia de arsénico y coliformes en agua potable del municipio de Tecuala, Nayarit, MéxicoToxicidad aguda del amonio en larvas de Macrobrachium tenellum (Smith) índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

  • No hay artículos similaresSimilares en SciELO

Compartir


Revista internacional de contaminación ambiental

versión impresa ISSN 0188-4999

Resumen

UC-PERAZA, Russell Giovanni  y  DELGADO-BLAS, Víctor Hugo. Mean lethal concentration (LC50) of four biodegradable household detergents in Laeonereis culveri (Webster 1879) (Polychaeta: Annelida). Rev. Int. Contam. Ambient [online]. 2012, vol.28, n.2, pp.137-144. ISSN 0188-4999.

The toxicity of four formulations of biodegradable household detergents was experimentally tested (Roma®, Foca®, Puro-Sol® and Blanca Nieves®), using Laeonereis culveri (Webster 1879) as test organism. The Probit method was used to determine the LC50 of the formula and the active ingredient from Linear Alkylbenzene Sulfonate (LAS), with a confidence level of 95 %. The results obtained showed that Laeonereis culveri when exposed to the detergents, had the following order of sensitivity according to the test LC50-48 h: FOCA®(formula: 59.56; LAS: 12.88 ppm) > Blanca Nieves® (formula: 70.79; LAS: 13.03 ppm) > Roma® (formula: 89.12; LAS: 13.48 ppm) > Puro-Sol® (formula: 91.83; LAS: 14.12 ppm). Significant differences were found (p <0.05) in relation to the toxicity of the four detergent formulations and also according to the different concentrations. The risk quotient (RQ) in all cases was higher than 1, suggesting that biodegradable detergents can cause damage to living organisms in the sediment and consequently to the entire ecosystem. This species is proposed as a tool for environmental risk assessment for household detergents.

Palabras llave : Laeonereis culveri; polychaeta; ecotoxicity; linear alkylbenzene sulfonate; bioassays; anionic surfactants.

        · resumen en Español     · texto en Español     · Español ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons