Dissolved iodine behavior in estuaries along the east coast of the United States

Previous studies of dissolved iodine behavior in estuaries have shown no evidence of iodine's participation in biogeochemical processes. Three estuaries along the United States' Atlantic coast clearly show the results of iodine reactivity in biological and/or particle processes. Major factors involved in controlling the iodine speciation and distribution in estuaries include: (i) remineralization of iodine-containing organic matter in sediment or anoxic bottom water; (ü) anthropogenic inputs; (iii) resuspension of fine-grained sediments and their associated interstitial water: and (iv) estuarine flow regime and residence time.