Effects of heavy metals salts on growth and velocity of oxygen uptake by the cells of green sulfur bacteria Chlorobium limicola Ya-2002

Abstract

Growth of phototrophic green sulfur bacteria Chlorobium limicola Ya-2002 under the influence of heavy metals salts different concentrations is investigated. The addition of CdSO4, ZnSO4, Pb(NO3)2 or CuSO4 to the medium inhibits the bacterial biomass accumulation. The velocity of oxygen uptake by C. limicola Ya-2002 during the growth in the media with metals salts is determined. It is affected to the largest extent by the addition of 2.5 mM of Pb(NO3)2 to the growth medium.

Keywords

• phototrophs
• green sulfur bacteria
• chlorobium limicola ya-2002
• toxi­city
• oxygen uptake
• heavy metals