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231224s2013 xx |||||o 00| ||eng c |
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|a 10.2166/wst.2013.279
|2 doi
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|a pubmed24n0766.xml
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Li, Q
|e verfasserin
|4 aut
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|a Effects of fluoride and chloride on the growth of Chlorella pyrenoidosa
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|c 2013
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 17.10.2013
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|a Date Revised 21.11.2013
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|a published: Print
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|a Citation Status MEDLINE
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|a To compare the toxic action of fluoride (F(-)) and chloride (Cl(-)) on freshwater algae, effects of F(-) and Cl(-) on Chlorella pyrenoidosa growth were investigated by determination of the algal biomass and model analysis. Results showed that the exponential growth equation (D = D0 + ae(bT)) may be used to fit the relationship between cell density (D) of C. pyrenoidosa and exposure time (T), but F(-) and Cl(-) have significantly different effects on parameters a (initial quantity of algae at the exponential growth stage) and b (growth constant). In the range of experimental concentrations, F(-) inhibited C. pyrenoidosa growth, and percent inhibition increased with increasing exposure time and F(-) concentration. By contrast, Cl(-) either inhibited or enhanced C. pyrenoidosa growth depending on Cl(-) concentration and exposure time, and percent inhibition increased with increasing Cl(-) concentration but decreased with increasing exposure time. The dose-response equation: I = min + (max - min)/(1 + 10(lgEC50-lgC)) may be used to fit the relationship between percent inhibition (I) and F(-) or Cl(-) concentration (C); however, F(-) was distinct from Cl(-) in terms of effects on parameter 'min'. The EC50 values of F(-) and Cl(-) ranged from 118 to 170 mg/L and 19.73 to 36.33 g/L, respectively; the latter is much higher than the former. Thus F(-) has higher toxicity than Cl(-)
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Chlorides
|2 NLM
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|a Water Pollutants, Chemical
|2 NLM
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|a Fluorides
|2 NLM
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|a Q80VPU408O
|2 NLM
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1 |
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|a Wu, Y Y
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|4 aut
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|a Wu, Y D
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Water science and technology : a journal of the International Association on Water Pollution Research
|d 1986
|g 68(2013), 3 vom: 11., Seite 722-7
|w (DE-627)NLM098149431
|x 0273-1223
|7 nnns
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| 773 |
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|g volume:68
|g year:2013
|g number:3
|g day:11
|g pages:722-7
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|u http://dx.doi.org/10.2166/wst.2013.279
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