Acute toxicity of organophosphate insecticide, dichlorvos in relation to selected water hardness for the freshwater zooplankters.
J Environ Biol
;
2008 Nov; 29(6): 837-9
Artículo
en Inglés
| IMSEAR
| ID: sea-113623
ABSTRACT
Toxicity of organophosphate insecticide, i.e. dichlorvos has been investigated in relation to selected water hardness for the freshwater zooplankters such as Moina, Daphnia, cyclops and nauplii. Results revealed that dichlorvos was highly toxic to the tested zooplankters, as the LC50 values are noticed in ppb. Trend of sensitivity for different zooplankters to dichlorvos was recorded as Moina < Daphnia < nauplii < cyclops. The LC50 were found to change significantly with the change in water hardness. The zooplankters were more susceptible to dichlorvos at water hardness of 275 mgl(-1) as compared to water hardness of 540 mgl(-1) as revealed from low LC50 values. The range of safe dischargeable concentrations (1.063-1.137ppb) were too low as compared to harmless or safe concentrations (43.895-89.194 ppb) for the zooplankters at both the hardness.
Texto completo:
Disponible
Índice:
IMSEAR (Asia Sudoriental)
Asunto principal:
Factores de Tiempo
/
Contaminantes Químicos del Agua
/
Zooplancton
/
Pruebas de Toxicidad Aguda
/
Diclorvos
/
Agua Dulce
/
Insecticidas
/
Dosificación Letal Mediana
/
Animales
Idioma:
Inglés
Revista:
J Environ Biol
Año:
2008
Tipo del documento:
Artículo
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