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Table 1 Comparison of solubility, agglomeration size, and EC50 of different (nano)forms of silver (algae—left part of the table and daphnia—right part of the table)

From: Hazard grouping of nanomaterials for daphnia and algae toxicity: lessons learned from scientific projects for regulatory applicability

 Primary particle size (nm)Solubility in OECD medium (72 h)
µg/l
Solubility in OECD medium (72 h) %dAgglomeration size (nm)OECD TG 201 (72 h) with R. subcapitataSolubility in ADaM medium (72 h) µg/lSolubility in ADaM medium (72 h) %dAgglomeration size (nm)OECD TG 202 (48 h) with D. magna
EC50 (nominal)
EC50 (nominal)EC50 (measured)
Nanowire batch 1340a3797 × 44849 ± 263< 0.011354 ± 4122 µg/l3.5 µg/l1500 ± 2450.02 ± 0.001382 ± 571.6 µg/l
Wire 110525a2423 × 24138 ± 12< 0.014531 ± 23552370 µg/l640 µg/l12 ± 9< 0.019023 ± 6888.5 µg/l
NM300K (spherical)a15453,333 ± 170,3924.5 ± 1.7146 ± 9562 µg/l (12 µg/lb,c)23 µg/l (81 µg/lb,c)466,333 ± 123,4234.6 ± 1.2257 ± 4045 µg/lb
AgNO3bIonicn.d.n.d.n.d.3 µg/lcn.d.n.d.n.d.n.d.5 µg/l
  1. aPublished in [8]
  2. bPublished in [14]
  3. cD. subspicatus
  4. dCompared to total amount included (1 g/l for batch 1340 and 110525, 10 mg/l for NM300K)