Abstract
The behavior of marine algae (Dunaliella salina, Chattonella antiqua, Heterosigma akashiwo, Skeletonema costatum, Chaetoceros debile and Thalassiosira weissflogii) against arsenate, arsenite and dimethylarsinic acid (DMAA) in a medium and the effects of glutathion that influenced the redox condition on arsenic accumulation of D. salina were studied. It was found that the order of growth inhibition of marine algae by arsenic species was As (III)>As (V)>DMAA. The order of arsenic accumulation by D. salina was As (V)≥As (III)>DMAA at a concentration of 100 mg/L. A small part of the arsenic accumulated by D. salina was methylated in vivo. The arsenic content increased with an increase of surrounding arsenic and iron. However arsenic content decreased at a phosphorus and selenium. Glutathion treatment increased arsenic accumulation by D. salinaat a concentration of 10-100 mgGSH/L.
