“…This gave an up to seven-fold increase in signal intensity for As, Be, Cd, Cr, Ni, Pb, V and Zn in loam soil. Two remarkably similar articles by Rahim et al 154,155 explored the impact of magnetic eld connement and laser uence on the emission lines of As, Ba, Co, Cr, Mn and Ti in river sediment samples. They claimed up to six-fold enhancement under optimised conditions.…”