Al (100ppm), As (100ppm), Cd (100ppm), Cr (100ppm), Co (100ppm), Cu (100ppm), Fe (100ppm), Pb (100ppm), Mg (100ppm), Mn (100ppm), Ni (100ppm), K (100ppm), Na (100ppm), Zn (100ppm), Y (600ppm) in 2% HNO3
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