Can I read Short-term Bioconcentration and Distribution of Methylmercury, Tributyltin and Corresponding Inorganic Species in the Starfish Leptasterias Polaris on EtoBox?

Short-term Bioconcentration and Distribution of Methylmercury, Tributyltin and Corresponding Inorganic Species in the Starfish Leptasterias Polaris by Claude Rouleau; Émilien Pelletier; Hans Tjälve is a Chemistry article available to read on EtoBox.

What is Short-term Bioconcentration and Distribution of Methylmercury, Tributyltin and Corresponding Inorganic Species in the Starfish Leptasterias Polaris about?

Starfish, Leptastenas polaris, were exposed between 30 min and 48 h to seawater containing 0.25 nmol dm-3 of radiolabelled methylmercury (MeZo3HgCI), tributyltin [(C4H9)3''3SnCIl, and inorganic 203HgCIz and ''3SnC14, with the objectives of comparing the uptake and distribution kinetics of these metal species in organs and tissues of treated organisms. Some starfish exposed to metals for 48 h were allowed to depurate for 24 h in clean seawater. Whole-body autoradiography was used to locate radiotracers very precisely within starfish tissues. The total amount of methylmercury (MeHg) accumulated in the whole animal after 48 h reached 0.53 nmol compared with 0.09 nmol for inorganic mercury, while tributyltin (TBT) reached 0.72 nmol compared with 0.017 nmol for inorganic tin. No significant reduction of body burdens occurred during the depuration period. The first-order rate constant characterizing the uptake of metals by whole animals, k l , ranged from 0.102h-' for MeHg to 3.6X lo-' h-' For inorganic mercury(I1) and to 8.4 X h-' for inorganic tin(IV). The first-order rate constant characterizing the translocation of metals from seawater-exposed tissues toward internal organs, k3, was

Who reads Short-term Bioconcentration and Distribution of Methylmercury, Tributyltin and Corresponding Inorganic Species in the Starfish Leptasterias Polaris?

Author

Claude Rouleau; Émilien Pelletier; Hans Tjälve

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0268-2605)

Published

1995

Language

EN

Field

Chemistry (Physical Sciences)