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EC number: 227-873-2
CAS number: 6018-92-4
Most sensitive toxicity data for 8 different freshwater algae species are summarised in the EU-RAR (2008). According to these data, the effect concentrations (parameter: growth rate) for Nickel hydrogencitrate were calculated:Scenedesmus accuminatus: NOEC (3d) = 0.039 mg Trinickel dicitrate/LDesmodesmus spinosus: NOEC (3d) = 0.071 mg Trinickel dicitrate/LPediastrum duplex: EC10 (3d) = 0.063 mg Trinickel dicitrate/LChlamydomonas sp.: EC10 (3d) = 0.064 mg Trinickel dicitrate/LAnkistrodesmus falcatus: EC10 (3d) = 0.042 mg Trinickel dicitrate/LChlorella sp.: EC10 (3d) = 0.132 mg Trinickel dicitrate/LCoelastrum microporum: EC10 (3d) = 0.130 mg Trinickel dicitrate/LPseudokirchneriella subcapitata: EC10 (3d) = 0.80 mg Trinickel dicitrate/LMost sensitive toxicity data for 4 different marine algae species (as cited in EU-RAR, 2008):Macrocystis pyrifera: EC10 (48h, growth) = 0.305 mg Trinickel dicitrate/LChampia parvula: EC10 (10d, reproduction) = 0.453 mg Trinickel dicitrate/LSkeletonema costatum: EC10 (72h, specific growth rate) = 0.386 mg Trinickel dicitrate/LDunaliella tertiolecta: EC10 (72h, specific growth rate) = 56.302 mg Trinickel dicitrate/LLowest toxicity data for 2 different aquatic plant species (as cited in EU-RAR, 2008), effect parameter: growthLemna gibba: EC10 (7d) = 0.157 mg Trinickel dicitrate/LLemna minor: EC10 (7d) = 0.026 mg Trinickel dicitrate/L
Accepted data on chronic single-species toxicity tests resulting in
accepted high quality reliable NOEC/L(E)C10 values (expressed as total
Ni concentration) for marine algae are summarized in the EU-RAR 2008,
too. From the database, EC10 values for four species are reported,
ranging from 97 μg Ni/L for growth of giant kelp (Macrocystis pyrifera)
to 17891 μg Ni/L for growth of the dinoflagellate, Dunaliella
tertiolecta. Expressed as Trinickel dicitrate the range was between
0.305 and 56.302 mg/L. The results are also only shown in an attached
document of the key study record, since the original reports are not
All reports for toxicity testing of Ni to aquatic plants (Lemna gibba
and Lemna minor) are not public available. Nevertheless the results,
given in the EU-RAR (2008) are reported here, because the data were
taken in the EU-RAR for the PNEC derivation via the species sensitivity
distribution method. Overall, six individual NOEC/L(E)C10 values,
ranging between 8.2 and 80 µg Ni/L (0.026 mg and 0.252 mg Trinickel
dicitrate/L, respectively) were stated.
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