284 ZUBARIK AND O'CONNOR 



variability for both inorganic and organic mercury uptake. For 

 organic uptake the variance contributed by changes in algal cell 

 concentration and salinity was also significant. Inorganic uptake was 

 apparently related to several factors other than temperature 

 (Table 5). The significant concentration factors (CF) for inorganic 

 and organic uptake produced the following predictive equations: 



CFinorganic = 2.3 + 0.07(T) - 2.2(ON) - 0.055(OC) 

 + 48(TB) + 0.0002(COND) 

 R2 = 0.65 (1) 



CForganic = 2.4 + 0.07(T) + 0.024(SAL) 

 - 0.06(AC/liter) - 0.02(OC) 

 R2 = 0.75 (2) 



where T = temperature 



ON = organic nitrogen 

 OC = organic carbon 

 TB = turbidity 

 COND = conductivity 

 SAL = salinity 

 AC /liter = algal cells per liter 



TABLE 5 



SIGNIFICANT VARIABLES USED IN 



PREDICTION EQUATIONS FOR INORGANIC 



AND ORGANIC MERCURY UPTAKE 



