Method for determining in-situ suspended sediment properties

摘要

The invention is directed to a method for determining in situ and in real time at least one suspended sediment property in a medium, said suspended sediment comprising a mineral and an organic fraction. Said method comprises the steps of (a) measuring light absorbance with a submersible ultraviolet-visible spectrometer, said ultraviolet-visible spectrometer being configured to analyse to analyse light absorbance at wavelengths which are comprised between 220 nm and 730 nm and of (b) correlating the light absorbance to the properties of said suspended sediment, preferentially by using the Beer-Lambert's law. Said method is remarkable in that said step (b) is performed by using one model calibrated for deriving said properties of said suspended sediment from said light absorbance.