The three-component LCF performed on 39 filaments indicated an average (rounded to full digits) of 18% As(III), 32% pharmacolite and 50% sodium arsenate. However, a precise determination of compound proportion could not be achieved for several reasons: the identity of the non-sulfur As(III...
particles. Finally, the powder was collected by filtration through a 0.2 μm polycarbonate membrane and washed with distilled water until the pH of the filtrate was neutral and dried at 80 °C overnight. RamanAD/AGratio=4.85. TGA (air) mass loss peak 615 °C, residue remaining=0...