Evaluations in support of the development of aquatic life criteria for major geochemical ions

This dataset provides data files and software regarding the report "EVALUATIONS IN SUPPORT OF THE DEVELOPMENT OF AQUATIC LIFE CRITERIA FOR MAJOR GEOCHEMICAL IONS: TOTAL ION TOXICITY VERSUS CALCIUM FOR SEVERAL AQUATIC SPECIES". This includes eight excel files containing data on multiple tests (of different salts, salt mixtures, and test conditions) regarding the acute toxicity of major geochemical ions to eight aquatic species. These data provide the chemistry of test solutions at median lethal conditions in these tests and were used in subsequent analyses described in the report to derive the relationships for total ion toxicity versus calcium concentration for these eight species (for subsequent use in criteria development). A Word file describing these files is provided, and additional files regarding the analyses are archived and subject to request. The dataset also provides two zip files containing software used in these analyses, including software for determining concentration-response curves (to quality assure author-reported LC50s during report preparation) and the software for establishing the total ion toxicity vs calcium relationships. Each zip file contains an executable file and the Fortran code used to build these executables for code review as desired, but are not recompilable into a new executables without Winteracter (a Fortran-based user interface development application).

This dataset is associated with the following publication:
Erickson, R. Evaluations in support of the development of aquatic life criteria for major geochemical ions: Total ion toxicity versus calcium for several aquatic species. U.S. Environmental Protection Agency, Washington, DC, USA, 2025.