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Toxicity to terrestrial arthropods

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A read-across approach was used from data for soluble Pb salts without concern on the toxicity of the accompanying anion. All reliable toxicity data selected for calculation of the PNEC were derived from soils spiked with soluble lead salts (such as lead chloride, lead acetate and lead nitrate). All results were based on elemental Pb concentrations, allow-ing straight comparison of the results and read-across to other Pb substances. Seventeen reliable chronic NOEC or EC10 values for 3 arthropod species species were selected for PNEC derivation. Selected values range from 34 to 2306 mg Pb/kg dw, both values being observed for reproduction of the springtail Folsomia candida.

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