The effect of salinity on cadmium toxicity to the estuarine mysid Mysidopsis bahia: role of chemical speciation
作者： P.F. De Lisle , M.H. Roberts
DOI: 10.1016/0166-445X(88)90062-8
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摘要: Abstract The effect of salinity on the toxicity cadmium to bay mysid, Mysidopsis bahia Molenock, was studied. When expressed in terms free ion (Cd2+) rather than total (CdT), CdCl+ or CdCl2 only a slight apparent, suggesting that Cd2+ is primary toxic species. Mysids were more tolerant at an intermediate 22‰ and less low high extremes (6 38‰). Alteration speciation by use artificial ligand, nitrilotriacetic acid (NTA), over range salinities (14–34‰) produced conflicting results. Toxicity independent CdT concentration given but increased with increasing and/or NTA determined be result salinity—Cd2+ NTA-Cd2+ interactions. Possible mechanisms interaction are discussed.
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