Improving the Measurement of Iron(III) Bioavailability in Freshwater Samples: Methods and Performance.

ABSTRACT: The toxicity of iron(III) in fresh waters has been detected at concentrations above the iron solubility limit, indicating a contribution of colloidal and particulate forms of iron(III) to the toxicity response. Current water quality guideline values for iron in fresh water are based on analytical determinations of filterable or total iron. Filtration, however, can underestimate bioavailable iron by retaining some of the colloidal fraction, and total determinations overestimate bioavailable iron measurements by recovering fractions of low bioavailability from suspended solids (e.g., iron oxides and oxyhydroxides) naturally abundant in many surface waters. Consequently, there is a need for an analytical method that permits the determination of a bioavailable iron fraction, while avoiding fal

SUBMITTER: Balsamo Crespo E 

PROVIDER: S-EPMC10107632 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature