evaluaciÓn de lactuca sativa y selenastrum capricornutum como indicadores de toxicidad en aguas

Clicks: 272
ID: 131900
2007
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Abstract
The use of Selenastrum capricornutum in acute toxicity assessment is a potentially useful toolin water monitoring. The main objective of this study was to compare the sensitivity of S.capricornutum with the extensively used Lactuca sativa bioassay in water and to select the bestindicator. For this purpose, inhibition or stimulation effects of algae cell growth and seed growthwere determined as end points. Sensitivity of both organisms was determined with Zn (II) asreference toxicant to homologate the results between S. capricornutum and L. sativa. However,when Selenastrum was exposed to Zn (II) there was a strong variation in results. Therefore, Cr(VI) was used as a reference toxicant. The CE50-120h value for Zn (II) for L. sativa was 24.48 mg/Land the CE50-96h value for Cr (VI) for S. capricornutum was 0.29 mg/L. Two environmentalsamples were collected from the Bogotá River and other from the Salitre wastewater treatmentplant, to evaluate sensitivity of indicators. Results showed similar responses on both organisms,possibly due to the organic matter concentration in evaluated samples.
Reference Key
bohrquez-echeverry2007universitasevaluacin Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;P. Bohórquez-Echeverry;C. Campos-Pinilla
Journal medecine/sciences
Year 2007
DOI
DOI not found
URL
https://docs.google.com/folder/d/0B_IdlsctkRrxS29vWmptMzBJRWM/edit?usp=sharing&pli=1&docId=0B_IdlsctkRrxaUMxNHdKWElyV1U
Keywords
bioassays water pollutionscience (general)

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