ECOTOXICITY ELEMENTS TOXICITY TO TERRESTRIAL ORGANISMS Soil invertebrates: Folsomia candida, Aporrectodea caliginosa

Remarks: Neat Na-LAS was 16.1 % (w/w) active C11.6 LAS in an aqueous solution, average molecular weight = 342 g/mol; Ca-LAS was > 99 % active C11.6 LAS (crystalline), average molecular weight = 674 g/mol (Ca is bivalent and therefore, each Ca atom has 2 LAS molecules); Mg-LAS 94 % active C11.6 LAS (crystalline), average molecular weight = 658 g/mol (Mg is bivalent and therefore, each Mg atom has 2 LAS molecules). The distribution of the linear alkyl chains was: C10 14 %, C11 34 %, C12 31 %, C13 21 %. Purity was determined by the high-performance liquid chromatographic technique used in the study. All data expressed in mg LAS (active substance) / kg d.w. (soil or soil-sludge mixture, nominal values).