Release of copper-amended particles from micronized copper-pressure-treated wood during mechanical abrasion

Table 1 Cu content in sawdust particles and eluates thereof

Wood treatment	µg Cu/mg abraded particles	µg Cu/mL medium (eluates^a) [release in %]
Untreated	0.01 ± 0.02	0.01 ± 0.01
MCA-pressure treated	2.02 ± 0.09	0.36 ± 0.01 [4.4%]
CC-pressure treated	4.26 ± 0.01	0.75 ± 0.01 [4.4%]
RPMI medium (w/o wood)	na	0.00 ± 0.01

^a4 mg abraded particles were incubated in 1 mL phenolred free RPMI for 24 h at 37 °C on a rotating platform; after centrifugation at 500 g for 5 min supernatants were further processed for ICP-MS measurements

ISSN: 1477-3155