Laserfiche WebLink
<br />CDMPARISDN OF TOTAL AND TOTAL RECOVERABLE METAL VALUES <br />CYCC has collected 38 water samples which have been analyzed for both <br />total and total recoverable zinc, copper, silver and iron. This data was used <br />to establish a mathematical relationship between total and total recoverable <br />metal concentrations in the same water sample. The mathematical relationship <br />was obtained through linear regression analysis of data from the 38 water <br />samples. Assuming that a linear relationship exists between total and total <br />recoverable copper, total copper values (independent variable) were regressed <br />against the corresponding total recoverable copper values to obtain: <br />CUTR = a CUT + b <br />where CUT = an observed total copper concentration <br />CUTR = the estimated total recoverable copper concentration of <br />a sample having an observed total concentration of CUT <br />a,b =regression coefficients <br />This process was repeated for silver, zinc and iron. (See Probability, <br />Statistics and Decision for Civil Engineers, by Benjamin and Cornell, for <br />details.) Values less than the detection limit were considered zero in accor- <br />dance with the suggestions of the CDOH in previous discussions. The results <br />of the regression analysis are given in Table 1. <br />