Ref ID : 1083
Fujita Masahiko and Hashizume Kenichiro; Status of uptake of mercury by the fresh water diatom, Synedra ulna. Water Research 9:889-894, 1975
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Synedra, a fresh water diatom, took up mercuric chloride rapidly from the surrounding water into the cells attaining the maximum level during the first 7 hr. The comparison of mercury uptake by dividing cells with that of non-dividing, heat killed cells and their silicate shells showed that some factors other than cell-division or photosynthesis were responsible for mercury uptake by Synedra cells. About 20% of the total amount of mercury found in dividing cells was taken up by passive adsorption and could be eliminated by washing with distilled water or medium. About 50% of the mercury could not be eluted even with cysteine solution and was accumulated in the inner part of cells. Synedra took up 0.45 um filterable or ionic mercury rather than particulate mercury larger than 0.45 um.