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. Author manuscript; available in PMC: 2020 Dec 24.
Published in final edited form as: Inhal Toxicol. 2019 Dec 24;31(13-14):432–445. doi: 10.1080/08958378.2019.1705441

Table 1.

Average (± standard deviation) levels of metals in bulk filaments (mg/kg)

Metala ABS/natural PLA/translucent blue PLA/clear yellow PLA/clear orange
Aluminium 0.036±0.002 0.047±0.003 0.032±0.013 0.035±0.006
Iron 0.023±0.005 0.042±0.041 0.037±0.023 0.034±0.011
Zinc 0.015±0.002 0.016±0.004 0.008±0.001 0.030±0.002
a

All results were obtained using helium gas collision mode