Volume 3, Issue 3 (2014)
JFST 2014, 3(3): 67-78 |
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Effect of Heavy Metals (Cadmium, Copper, Lead and Nickel) on Chlorophyll a and Biomass of Green Algae Scenedesmus quadricauda. JFST 2014; 3 (3) :67-78
URL: http://jfst.modares.ac.ir/article-6-9538-en.html
URL: http://jfst.modares.ac.ir/article-6-9538-en.html
Abstract: (10179 Views)
In a completely randomized design, the effects of heavy metals of Cd, Cu, Pb and Ni at concentrations of 0, 5, 50 and 100 mg/l on chlorophyll a and biomass in green algae Scenedesmus quadricauda were investigated for 14 days under laboratory conditions of 23 °C, 12 h light: 12 hours light and light intensity of 60 mol photons/m2/s. The lowest density, chlorophyll a and dry biomass obtained at 100 mg/l in all of the heavy metals. The mean (±SE) highest increasing rates of chlorophyll a were 24.2±1.1, 23.1±0.8, 36.7±1.4 and 35.5±1.2% for Cd, Cu, Pb and Ni, respectively. Correspondingly, the reduction rates based on dry biomass were 51.5±3.1, 35.2±1.1, 47.9±1.6 and 56.6±2.8% for Cd, Cu, Ni and Pb, respectively. The results showed that heavy metals made significant reduction on chlorophyll a and dry biomass in S. quadricauda.
Keywords: Scenedesmus qaudricauda, Green algae, Scenedesmus quadricauda, Heavy metals, Chlorophyll a, Biomass
Article Type: Research Article |
Subject:
Biology and physiology|Water managment|Fisheries Nanotechnology
Received: 2013/09/10 | Published: 2014/11/22
Received: 2013/09/10 | Published: 2014/11/22
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