Spatio-temporal distribution of perchlorate and its toxicity in Hydrilla verticillata.

The spatio-temporal distribution of perchlorate in water sources around an ammonium perchlorate production unit and its toxicity response on a dominant aquatic plant, Hydrilla verticillata are reported in this study. Samples (n=453) from ground water (open well) and surface water sources within 5km from the production unit over a period of 12 months (2014, June - 2015, May) were screened for ClO. During the period, ClOconcentration in ground water samples close to the production unit increased to >40,000μg/L, and ClO was detected at 1740μg/L in well water 1.