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Adsorption/desorption of Chlorohexidine (CHX) on Flax and Cotton fibers - Essay Example

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It is very clear in Figure 1 that the difference in light-absorbance in equilibrium compared to the initial is greater for flax than for…
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Adsorption/desorption of Chlorohexidine (CHX) on Flax and Cotton fibers
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"Adsorption/desorption of Chlorohexidine (CHX) on Flax and Cotton fibers"

Download file to see previous pages These remarks on the results, however, are mere eyeball observations. It is essential that the results be statistically analyzed to properly prove that the type of fiber really has significant effect on light-absorbance and adsorption of chlorhexidine. Since there are two-variables being analyzed—type of fiber and time, it is appropriate to use two-way analysis of variance (ANOVA). Table 1 shows the values calculated. If the F value computed is greater than the critical value (F crit) and the P-value is less than 0.05, then the difference between attributes are significant. Some scientists determine the level of significance of the result with the p-value. Some consider that p-values lower than 0.001 signifies very significant results.
First row of Table 1 shows that the F value of 127421.5 is exceedingly greater than the critical value of 4.149097. Also the P-value is remarkably low. This suggests that the type of adsorbing fiber extremely affects the adsorption of chlorhexidine. The second row means that adsorption is also very much influenced by the reaction time. And the third row confirms that there is interaction between time and type of fiber. Simply put, both time and type of fiber affects adsorption such that the cause of changes in chlorhexidine adsorption cannot distinctively be attributed to just one factor.
It can be observed in Figure 1 that the change in absorbance for the first 10 minutes is very steep compared to the changes at later times. One-way analysis of variance of flax results, as shown in Tables 2 and 3, suggests that change in absorbance are significant until after 50 minutes of flax submersion in chlorhexidine. This simply means that flax only reached equilibrium after 50 minutes. Table 4 and 5, on the other hand, proves that equilibrium was attained within 30 minutes by cotton. This implies that cotton achieves equilibrium faster than ...Download file to see next pagesRead More
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