Laserfiche WebLink
5 .- • <br />n <br />TABLE 9. - Mercury in selected U.S. <br />cement kiln dust samples, ug/g <br />Sample Mercury Sample Mercury <br />8...... <0.13 52.... 0.25 <br />9...... 1.0 58.... .13 <br />13...... .13 64.... <.13 <br />14...... <.13 65.... .38 <br />17...... <.13 68.... <.13 <br />19...... <.l3 104.... 1.0 <br />35...... .63 108.... <.13 <br />49...... <.13 110.... .63 <br />[erelement Correlations <br />Interelement correlation coeffici- <br />ents were genecated using linear regres- <br />sion analysis on a total of 23 elements, <br />anions, carbonate carbon as C02, noncar- <br />bonate carbon, and chemically bound <br />water. Coefficients with values r >0.4 <br />or r <-0 .4 were taken as significant <br />positive or negative correlations. Of <br />the 23 parameters tested, only l4 para- <br />meters showed significant correlation. <br />Table IO shows the interelement correla- <br />tion coefficients Eor the 23 pairs. <br />Some very significant correlations <br />TABLE 10. - Interelement correlation coefficients for U.S. cement kiln dust <br />Element or anion Al Ca C1- CO F- Fe K <br />Al ................... 1 0.46 <br />Ca ................... 1 -0.45 -0.85 <br />C1- .................. -.45 1 .Sb <br />CO .................. 1 -0.42 <br />F- ................... -.42 1 <br />Fe ................... .46 1 <br />K .................... -.85 .56 1 <br />Li . .................. -.54 .44 <br />Na ................... -.55 .42 .47 <br />Pb ................... -.42 <br />Si ................... .48 -.55 <br />Sr ................... <br />SO42- ................ -.77 -.51 .77 <br />Ti . .................. .77 .49 <br /> Li Na Pb Si Sr 50 <br />2- Ti <br /> 4 <br />A1 ................... 0.48 0.17 <br />Ca ................... -0.54 -0.55 -0.42 -0.77 -0.77 <br />C1- .................. <br />CO .................. -.51 <br />F- ................... 42 1 <br />Fe ................... .49 <br />K .................... .44 ~ .47 -.55 .77 <br />Li ................... 1 .41 .49 <br />Na ................... .41 1 0.52 <br />Pb ................... 1 <br />Si ................... 1 -.44 .42 <br />Sr ................... .52 1 <br />5042- ................ .49 -.44 -.44 1 <br />Ti ................... .42 1 <br />1Blank indicates that correlation coef ficient is insignificant (-0.4 < r <0.4). <br />