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Bioaccessibility of metals in alloys: Evaluation of three surrogate biofluids

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Title Bioaccessibility of metals in alloys: Evaluation of three surrogate biofluids
Names Hillwalker, Wendy E. (creator)
Anderson, Kim A. (creator)
Date Issued 2014-02 (iso8601)
Note This is the publisher’s final pdf. The published article is copyrighted by Elsevier and can be found at: http://www.journals.elsevier.com/environmental-pollution/.

The author has paid for open access of this Elsevier article.
Abstract Bioaccessibility in vitro tests measure the solubility of materials in surrogate biofluids. However, the lack
of uniform methods and the effects of variable test parameters on material solubility limit interpretation.
One aim of this study was to measure and compare bioaccessibility of selected economically important
alloys and metals in surrogate physiologically based biofluids representing oral, inhalation and dermal
exposures. A second aim was to experimentally test different biofluid formulations and residence times
in vitro. A third aim was evaluation of dissolution behavior of alloys with in vitro lung and dermal biofluid
surrogates. This study evaluated the bioaccessibility of sixteen elements in six alloys and 3 elemental/
metal powders. We found that the alloys/metals, the chemical properties of the surrogate fluid, and
residence time all had major impacts on metal solubility. The large variability of bioaccessibility indicates
the relevancy of assessing alloys as toxicologically distinct relative to individual metals.
Genre Article
Topic Stainless steel
Identifier Hillwalker, W. E., & Anderson, K. A. (2014). Bioaccessibility of metals in alloys: Evaluation of three surrogate biofluids. Environmental Pollution, 185, 52-58. doi:10.1016/j.envpol.2013.10.006

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