The Absorption of Inorganic Ions by Chlorella pyrenoidosa.

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Abstract
The isotope method was used to determine the relationship between the quantity of an element removed by Chlorella cells from the nutrient soln. and the nutrient concn. of that element. Elements used in these studies were P, Ca, S, Fe, Mn, Zn, Cu and Sr. The absorption, by the algae, of all elements except P and S, was directly proportional to the concn. of that element in the nutrient soln., whereas the quantities of P and S in the algal cells were constant when the cells were grown in the higher nutrient conens. of these elements. All relationships detd. are expressed mathematically, and calculations are made of the total quantity of element removed from the nutrient soln. by the cells.