Tabic 7. Spcctroclicniical Analyses of Sewage Sludges in the New York Metropolitan Region 



Element 



Wards Island 



Hunts Point 



Newtown Creek 



Bowery Bay 



Talismans Island 





(percent) 



(percent) 



(percent) 



(percent) 



(percent) 



Silicon 



7.0 



8.9 



11.0 



10.0 



10.0 



Iron 



1.0 



2.6 



1.2 



3.2t 



1.5 



Aluminum 



1.7 



2.5 



2.5 



2.7 



2.7 



Calcium 



1.2 



1.8 



3.7 



1.6 



1.4 



Magnesium 



0.63 



0.69 



0.59 



0.84t 



0.80 



Copper 



0.056 



0.14 



0.16 



0.19 



0.11 



Sodium 



2.0t 



1.2 



1.3 



1.7 



1.1 



Titanium 



0.17 



0.38 



0.23 



0.56t 



0.27 



Chromium 



0.050 



0.11 



0.080 



0.25 



0.085 



Potassium 



2.5 



2.7t 



1.7 



2.7 



1.8 



Phosphorus 



0.29 



0.91 



0.65 



0.77 



0.70 



Barium 



0.040t 



0.059 



o.iot 



0.071 



0.042 



Boron 



0.0016 



0.0024 



0.0034 



0.0020 



0.0034 



Lead 



TR<0.005 



0.055 



0.12t 



0.12 



0.056 



Manganese 



0.014 



0.017 



0.021 



0.029 



0.040 



Nickel 



0.0069 



0.019 



0.025 



0.090t 



0.033 



Molybdenum 



0.0011 



0.0016 



0.0033 



0.0039 



TR 0.002 



Tin 



0.021 



0.034 



0.028 



0.048 



0.022 



Vanadium 



0.0076 



0.015t 



0.0059 



0.011 



0.0080 



Bismuth 



ND<0.002 







TR< 0.002 



ND<0.002 





Silver 



0.0015 



0.0014 



0.0016 



0.0033t 



0.0021 



Zinc 



0.069t 



0.25 



0.24 



0.29t 



0.17 



Zirconium 



0.0053 



0.012 



0.027 



0.021t 



0.012 



Cobalt 



0.0015 



0.0036 



0.0039 



0.0061t 



0.0031 



Strontium 



0.0096 



0.015 



0.0097 



0.015t 



0.0075 



Arsenic 



ND<0.06 













Mercury 



ND<0.09 













Antimony 



ND<0.008 













Thorium 



ND<0.10 













Beryllium 



ND< 0.0003 













Gallium 



ND<0.003 













Yttrium 



ND<0.009 













Ytterbium 



ND< 0.004 













Cerium 



ND<0.04 













Other 



nil 



nU 



nU 



nU 



nil 



Loss on Ignition 



64.55 



53.75 



49.10 



47.90 



55.40 



(sulfate ash) 













ND Not Detected 

 TR Trace 

 t Maximum value for element 



after Gross. 1970 



59 



