Preserving the distribution of inorganic arsenic species in groundwater and acid mine drainage samples.

@article{Bednar2002PreservingTD,
  title={Preserving the distribution of inorganic arsenic species in groundwater and acid mine drainage samples.},
  author={Anthony J. Bednar and John R. Garbarino and James F. Ranville and Thomas R Wildeman},
  journal={Environmental science & technology},
  year={2002},
  volume={36 10},
  pages={2213-8}
}
The distribution of inorganic arsenic species must be preserved in the field to eliminate changes caused by metal oxyhydroxide precipitation, photochemical oxidation, and redox reactions. Arsenic species sorb to iron and manganese oxyhydroxide precipitates, and arsenite can be oxidized to arsenate by photolytically produced free radicals in many sample matrices. Several preservatives were evaluated to minimize metal oxyhydroxide precipitation, such as inorganic acids and… CONTINUE READING
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