Accumulation, speciation, and coordination of arsenic in an inbred line and a wild type cultivar of the desert plant species Chilopsis linearis (Desert willow)

X-ray absorption spectroscopic analyses established partial reduction of arsenate to arsenite in roots and stems of the inbred line “Louis Hamilton” of Chilopsis linearis. The reduced fraction was found as an As-(SX)3 species, as confirmed by the As2S3 model compound contribution in the X-ray absorption near edge structure (XANES) spectra.