Average concentrations of elements in Polk County, Iowa

    Counties page > Zn in Conterminous US > Zn in central US > Averages in Polk County (Calculated from cells in the geochemical grid plotting in this area.)
Element Symbol Mean Std. dev. Minimum Maximum
AluminumAl (wt%)5.3900.1994.7785.804
ArsenicAs (ppm)8.0801.3185.22210.431
CalciumCa (wt%)1.0560.4160.5032.544
CopperCu (ppm)15.8461.85611.33220.699
IronFe (wt%)2.5660.2791.8853.423
MercuryHg (ppm)0.0330.0030.0240.040
MagnesiumMg (wt%)0.5990.1200.4491.032
ManganeseMn (ppm)780.86978.765639.2611087.900
SodiumNa (wt%)0.9060.0550.7831.047
PhosphorusP (wt%)0.0560.0060.0410.075
LeadPb (ppm)17.3632.61412.97424.846
SeleniumSe (ppm)0.4150.0410.3100.629
TitaniumTi (wt%)0.2710.0170.2330.305
ZincZn (ppm)63.5816.48746.78578.648

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