GRADUALLY-RISING SPIRAL PASSIVE SAMPLER FOR ORGANIC POLLUTANTS ON WATER-SEDIMENT INTERFACE

摘要

A gradually-rising spiral passive sampler for organic pollutants on a water-sediment interface comprises a sediment pore water sampler (2) and a water sampler (1) arranged above the sediment pore water sampler (2). A plurality of sediment sampling units (4) are vertically arranged inside the sediment pore water sampler (2); a plurality of transversely-arranged water sampling units (3) are sequentially arranged inside the water sampler (1) in a vertical direction; the sediment pore water sampler (2) and the water sampler (1) are organically combined together, and the sediment sampling units (4) are arranged vertically and the transversely-arranged water sampling units (1) are sequentially arranged in the vertical direction, so that the concentration of the organic pollutants in sediment pore water in different depths and the concentration of the organic pollutants in overlying water at different heights at the same position can be accurately obtained at the same time, that is, the concentrations at different positions in the sediment pore water and the overlying water can be measured from multiple points at the same time; and through mathematical calculation, the real diffusion flux between the sediment pore water and the overlying water can be obtained.