Application of toxicity testing technique: determination of LC50 of arsenic on some marine organisms [Ứng dụng kỹ thuật kiểm định độc tố: xác định nồng độ gây chết 50% (LC50) của asenic đối với một số sinh vật biển]

Abstract

Results obtained from toxicity testing experiments on Artemia (1998), Tiger prawn (Penaeus monodon) (1998-1999) and Seabass (Lates carcarifer) (1998-1999) led to determine the LC50 values of Arsenic on them with 24-h, 48-h, 72-h, and 96-h exposure. LC50-s tended to decrease by the exposure duration. In the same exposure duration, LC50 value of Seabass showed smaller than that of Tiger prawn and both values were smaller than that of Artemia. It means that the sensitivity to lethal toxic effect of Arsenic showed decreasing by following order: Seabass > Tiger prawn > Artemia.