Chemical and toxicological properties of coal fly ash - University of ...

Table 27. The mean initial lengths and weights of juvenile green sunfish used in the bioaccumulation experiments.Mean lengthMean weightSamp 1 e r\l (mm) F valuea (9) F valuedControl -A 5 47.8 1.356Control-B 5 48.6 0.133 1.326 0.01 3aResults of the analysis of variance indicate that if F(1,8)than 3.46, replicates are significantly different.is greaterwere 50 mm and 1.3 g, respectively (Table 29). Fathead minnows and greensunfish in the control solutions were essentially the same size as thoseexposed to the fly ash extracts (Table 30).At the conclusion of the experiments, all the duplicates that could beanalyzed proved to be homogeneous (Tables 31 and 32). The mean finallengths and weights of the fathead minnows and green sunfish betweenreplicates were not significantly different from each other (Tables 33 and34). Although the concentrations of the extracts to which the organismswere exposed should not have caused mortality, it was hypothesized that thetoxic components may have been of sufficient concentration to causesublethal, physiological perturbations resulting in decreased growth. Theresults of the ANOVA demonstrated that at the termination of thebioaccumulation experiments the green sunfish and fathead minnows in theTable 28. Initial mean total lengths and weights of adult fathead minnows exposed to extracts from five fly ashesand a control.Me an St andard Mean StandardSamp 1 e N length (mm) devi ation weight (g) deviationControl 10 47.9 3.33 0.998 0.230W2 10 49.8 4.09 1.135 0-300I3 10 52.0 3.66 1 .I60 0.252I8 10 49.3 4.76 1.110 0.389I7 10 49.4 4.34 1 .I34 0.334I2 10 47.8 4.81 1.132 0.432