ABSTRACT:

This dataset contains elemental concentrations measured in the tissues of Chinese cabbage (Brassica rapa ssp. Pekinensis) following controlled exposure to dust from the dry Great Salt Lake (GSL) lakebed. Plants were grown in a greenhouse using an inert growth medium and subjected to foliar dust application, soil dust amendment, or control conditions. Plant tissues were separated into roots, old leaves, and young leaves, ashed, digested in aqua regia, and analyzed by ICP-MS. The dataset includes treatment-level and tissue-specific metal(loid) concentrations and supports evaluation of plant-availability and potential indirect dietary exposure to metals associated with GSL dust.

ABSTRACT:

This dataset contains elemental concentration data for dust collected from the exposed lakebed of Great Salt Lake (GSL) and subjected to a suite of complementary leaching extractions designed to evaluate metal(loid) mobility and bioaccessibility. A composite <63-µm dust sample was extracted using ammonium acetate, nitric acid, aqua regia, and a simplified simulated gastric fluid to represent environmentally mobile, mineral-bound, total, and ingestion-relevant fractions, respectively. Concentrations were quantified by ICP-MS for a broad suite of elements, including USEPA Priority Pollutants. The dataset supports assessment of element-specific solubility, potential environmental transport, and human exposure via oral ingestion. These data are intended to support studies of dust geochemistry and exposure risk assessment.