Acute toxicity of trivalent thallium compounds to Daphnia magna.
Daphnia magna was used to evaluate the aquatic toxicity of Tl(III) compounds including Tl(III) nitrate, Tl(III) chloride, and Tl(III) acetate. The results clearly show that Tl(III) is extremely toxic to daphnids. The 48-h LC50 values for Tl(III) nitrate, Tl(III) chloride, and Tl(III) acetate are 24, 61, and 203 microg/L, respectively. Tl(III) is much more toxic than Tl(I) and many other metals such as Cd(II), Cu(II), and Ni(II); it is similar to the toxicity that of Hg(II). The formation of Tl(III)-complexes would significantly reduce Tl(III) toxicity.
Lan
Cheng-Hang
CH
Department of Industrial Safety and Hygiene, Chung-Hwa College of Medical Technology, Tainan County, Taiwan.
Lin
Tser-Sheng
TS
D000818:Animals; D003621:Daphnia; D007928:Lethal Dose 50; D009942:Organometallic Compounds / Q000737:chemistry / Q000633:toxicity*; D013793:Thallium / Q000737:chemistry / Q000633:toxicity*; D014874:Water Pollutants, Chemical / Q000633:toxicity*
D009942:Organometallic Compounds; D014874:Water Pollutants, Chemical; C027549:thallium chloride; D013793:Thallium; C042172:thallium nitrate; C026995:thallium acetate