Seasonal Investigations of Dissolved Organic Carbon Dynamics in the Tamar Estuary, U.K.

摘要: Abstract A high temperature catalytic oxidation (HTCO) technique was used to measure dissolved organic carbon (DOC) during seasonal surveys of the Tamar Estuary, U.K. At time programme, field DOC analysis had been plagued by numerous analytical difficulties. However, using thorough calibration systems and systematic an internal reference material, a valuable estuarine data set produced. The range concentrations observed (478–110 μM C) is consistent with published for riverine coastal sea waters respectively. Estuary freshwater DOC-dominated system, strong correlation between lateral distribution salinity. mixing behaviour not strictly conservative. During tidal cycle studies at fixed station, appeared be uncoupled from salinity, were inversely related turbidity. It concluded that tidally-induced resuspension bottom sediments provided dominant control mechanism concentration. shows contrasting larger, more heavily impacted, Severn Estuary. Hence it likely in estuaries cannot classified as typical per se, but function natural anthropogenic characteristics catchment hydrology.