Lactose cuts down heavy metal contamination from commercial dyes

iNDUCTIVELY COUPLED plasma optical emission and a direct analyzer were used to detect metals in dyes of the life-bionad project. Blue teratop GLF and foron brown yellow showed a high amount of HG. Chromophores in the wet press-cake form had low lebel of metals that did not increase when lactose was employed to obtain the corresponding naturalized dyes