scholarly journals Identifying the potential of some heavy metals toxicity in urban and peri-urban cropping systems in Sierra Leone

2017 ◽  
Vol 2 (5) ◽  
pp. 74-85 ◽  
Author(s):  
Abdul Rahman Conteh ◽  
◽  
Alusaine Edward Samura ◽  
Emmanuel Hinckley ◽  
Osman Nabay ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Sierra Leone ◽  
Cropping Systems ◽  
Heavy Metals Toxicity

Heavy metals toxicity to food crops and application of microorganisms in bioremediation

2021 ◽  
pp. 421-434
Author(s):  
Mohammad Tarique Zeyad ◽  
Waquar Akhter Ansari ◽  
Mohd Aamir ◽  
Ram Krishna ◽  
Sushil Kumar Singh ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Food Crops ◽  
Heavy Metals Toxicity

scholarly journals Evaluation of some heavy metals toxicity in Channa punctatus and riverine water of Kosi in Rampur, Uttar Pradesh, India

2020 ◽  
Vol 27 (5) ◽  
pp. 1191-1194 ◽  
Author(s):  
Nida Idrees ◽  
Robeena Sarah ◽  
Baby Tabassum ◽  
Elsayed Fathi Abd_Allah
Keyword(s):  
Heavy Metals ◽  
Uttar Pradesh ◽  
Channa Punctatus ◽  
Riverine Water ◽  
Heavy Metals Toxicity

scholarly journals Response of Pseudokirchneriella subcapitata in Free and Alginate Immobilized Cells to Heavy Metals Toxicity

Molecules ◽  
2020 ◽  
Vol 25 (12) ◽  
pp. 2847
Author(s):  
Zaki M. Al-Hasawi ◽  
Mohammad I. Abdel-Hamid ◽  
Adel W. Almutairi ◽  
Hussein E. Touliabah
Keyword(s):  
Heavy Metals ◽  
Toxic Metals ◽  
Immobilized Cells ◽  
Algal Growth ◽  
Pseudokirchneriella Subcapitata ◽  
Response Curves ◽  
Free Cells ◽  
Heavy Metals Toxicity ◽  
Removal Of Heavy Metals ◽  
Immobilized Algae

Effects of 12 heavy metals on growth of free and alginate-immobilized cells of the alga Pseudokirchneriella subcapitata were investigated. The tested metals ions include Al, As, Cd, Co, Cr, Cu, Hg, Se, Ni, Pb, Sr, and Zn. Toxicity values (EC50) were calculated by graphical interpolation from dose-response curves. The highest to the lowest toxic metals are in the order Cd > Co > Hg > Cu > Ni > Zn > Cr > Al > Se > As > Pb > Sr. The lowest metal concentration (mg L−1) inhibiting 50% (EC50) of algal growth of free and immobilized (values in parentheses) algal cells were, 0.018 (0.09) for Cd, 0.03 (0.06) for Co, 0.039 (0.06) for Hg, 0.048 (0.050) for Cu, 0.055 (0.3) for Ni, 0.08 (0.1) for Zn, 0.2 (0.3) for Cr, 0.75 (1.8) for Al, 1.2 (1.4) for Se, 3.0 (4.0) for As, 3.3 (5.0) for Pb, and 160 (180) for Sr. Free and immobilized cultures showed similar responses to Cu and Se. The free cells were more sensitive than the immobilized ones. Accordingly, the toxicity (EC50) of heavy metals derived only form immobilized algal cells might by questionable. The study suggests that batteries of alginate-immobilized algae can efficiently replace free algae for the bio-removal of heavy metals.

Sign in / Sign up

Export Citation Format

Share Document