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SE*i- B' u r­�_ ice Cola __ P L�;-L -= �? ?=N<< �= �_ - -- <br /> �E <br /> INTRODUCTION <br /> Bromide has been found to be a common component of <br /> Oil-field brine discharges but has seldom been implicated <br /> as a toxic constituent in effluents. Studies available in the <br /> open literature on the aquatic toxicology of bromide <br /> indicate that the acute toxicity of bromide is similar to, or <br /> slightly less, than that of chloride. Though the chronic <br /> toxicity of bromide to fathead minnows is also similar to <br /> that of chloride, chronic toxicity to invertebrates has been <br /> reported at substantially lower concentrations than those <br /> typically observed for chloride. <br /> Acute, sub-chronic, and chronic toxicity tests were <br /> conducted as part of the present study to elucidate the <br /> acute and chronic effects of bromide exposure on aquatic <br /> organisms and to aid in deriving acute and chronic <br /> bromide criteria using National Ambient Water Quality <br /> Criteria (AWQC) procedures. Testing was conducted using <br /> standard test methods, i.e., USEPA and ASTM. Nominal <br /> bromide concentrations were confirmed using an Orion ion <br /> selective electrode (ISE). <br />