Strontium isotopic geochemistry of the changjiang estua- rine waters: Implications for water-sediment interaction

摘要

The Sr concentrations 87_sr/86_sr ratios have been measured for the Chjangjiang es- tuarine waters with a main purpose to understand physical and chemical processes at the estuary. The result shows that the Changjiang River water has higher Sr concentration (150 ng/g) and Lower 87_sr/86_sr ratio (0.7105) when compared with the average values (0.7119 for 87_sr86_sr and 78ppb for Sr, respectively) of large world rivers. In the mixing process, no simple mixing of two End-members has been found according to the variations of Sr concentration and isotope ratios.