Dissolved Pollution Product Gases in Natural Waters.

摘要

Concern about effects of resuspension of watery deposits by increased tidal circulation upon removal of a causeway in upper Montsweag Bay,Maine prompted development of an analytical method for dissolved sulfide which avoids some problems of other procedures and yields a measure of water-soluble as contrasted with acid-soluble sulfide. Development of the sulfide antioxidant buffer allows potentiometric titrations for dissolved sulfide to be performed providing cadmium or lead rather than silver is used as titrant. Depth distribution of water soluble sulfide was determined for eight sediment cores. Sulfide concentrations at the maxima range from one to eight moles sulfur/cu m of in situ mud. Caution should be exercised in activities like the causeway removal as the oxygen demand of surficial sediments is significant. Conservative estimated mean of five mole sulfide/cu m showed a mixing ratio of less than 30volumes of oxygen sea water per volume of mud will render water toxic. (Modified author abstract)