TIE on leachates from cut CD-Rs. Manipulations were made in two different
sets: 1st set by solid-phase extraction with C18 cartridges (removing hydrophobic
substances), and CM cartridges (removing cations); and 2nd set by sodium
thiosulfate (STS) addition (binding metals, e.g. Ag2+), and EDTA addition (binding
metals). Immobility (%) of Daphnia magna after 24 h exposure to leachates
(replicated) is presented for untreated leachate, and after treatments.