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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Bioaccumulation of Cadmium in an Experimental Aquatic Ecosystem
Involving Phytoplankton, Zooplankton, Catfish and Sediment) ผู้เขียน: Suneerat Raungsomboon,  นางลัดดา วงศ์รัตน์, ศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractThe accumulation of cadmium (Cd) was studied in an experimental aquatic ecosystem involving
the phytoplankton, Chlorella regularis, the zooplankton, Moina macrocopa, and the catfish, (cross bridge
Clarias macrocepharus X Clarias gariepinus), and sediment. All organisms were selected in this study
because of their economically importance. The accumulation of cadmium was mainly on phytoplankton.
The cadmium concentration in all organisms increased with increasing cadmium concentration in the
ecosystem. When the input cadmium concentration was 3.5 mg l-1, cadmium accumulated in the surface
of sediment (0-1 cm.), phytoplankton, zooplankton, and catfish were 5.53?0.26, 586.18?23.37,
141.52?26.74 and 10.29?0.47 ?g g-1 (dry wt.), respectively. Results showed that phytoplankton,
zooplankton, and catfish exposed to cadmium represents a risk of secondary poisoning for their predators
and such a risk could affect humans. The accumulation of cadmium in sediment may have an effect on
benthic organisms. |