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Occupational exposure during handling and loading of halloysite nanotubes GÇô A case study of counting nanofibers

Reference Koivisto AJ, Bluhme AB, Kling KI, et al. Occupational exposure during handling and loading of halloysite nanotubes GÇô A case study of counting nanofibers. NanoImpact 2018;10:153-60.
Udgivet: 2018
[Type] Videnskabelig artikel
[Resumé] [Open access]PrFont34Bin0BinSub0Frac0Def1Margin0Margin0Jc1Indent1440Lim0Lim1Halloysite nanotubes (HNTs) are abundant naturally-occurring hollow aluminosilicate clay mineral fibers with a typical diameter??3 and in length?>?2?µm. These particles were agglomerated and/or aggregated particles where the longest individual fiber was 2?µm in length. The occupational exposure limits for refractory mineral fibers vary from 0.1 to 2?fibers?cm-3. Following standard protocols for fiber analysis, detection of 0.1?fibers?cm-3 would require analysis on 4?×?104 images when the filter loading is good. Thus, the fiber sampling and quantification procedures needs to be improved significantly if nanofibers <100?nm in diameter are included in regulatory exposure assessment. Due to very limited toxicological information of HNTs we recommend avoiding inhalation exposure.
Link: https://doi.org/10.1016/j.impact.2018.04.003
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[Oprettet] 08.05.2018
 
Opdateret  08.05.2018
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