Simulation of acid-base condition and copper speciation in the fish gill microenvironment

Computers & Chemistry
S TaoF Xu

Abstract

pH, alkalinity, and mucus content in the fish gill microenvironment of carp (Cyprinus carpio) were measured by exposing fish to copper at various water pH levels using an apparatus which separates inspired and expired water. The relationship between pH levels inside and outside of the gill microenvironment, between pH and alkalinity, and between mucus secretion, pH, and copper exposure concentration were modeled. Copper speciation in the surrounding water and in the fish gill microenvironment was simulated using MINTEQA2 chemical equilibrium calculation software. The results of the modeling for pH, alkalinity, and mucus calculation were then adopted as inputs for purposes of parameter identification in the speciation modeling. The differences observed in the copper species distribution between that of the fish gill microenvironment and the surrounding water were based on the speciation modeling. The change in copper bioavailability for fish uptake was also examined. The results indicate the presence of an experimental pH balance point at 6.9, where the pH in the fish gill microenvironment is identical to that of the surrounding water. The observed deviation range in pH levels between that found at the gills and that of the surr...Continue Reading

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Citations

Jul 26, 2006·Archives of Environmental Contamination and Toxicology·S TaoP K Wong
Mar 3, 2004·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Cleoni dos Santos CarvalhoMarisa Narciso Fernandes
Mar 29, 2005·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Gretchen K BielmyerStephen J Klaine
Oct 3, 2002·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Shu TaoBo Pan
Apr 4, 2002·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Yi WenShu Tao
Jan 7, 2015·Bulletin of Environmental Contamination and Toxicology·Lily Lianmuankim GuiteSunkam Narayana Iyengar Ramanujam
Nov 19, 2013·Aquatic Toxicology·Matthew J BertinPeter D R Moeller
Nov 9, 2014·Environmental Science and Pollution Research International·Yousef S Saleh, Mohamed-Assem S Marie
Oct 16, 2007·Ecotoxicology and Environmental Safety·Clarissa Bonafé Gaspar RuasMarisa Narciso Fernandes
Jan 22, 2018·Environmental Science and Pollution Research International·Thaís DalzochioGünther Gehlen
Jun 1, 2007·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Cleoni Dos Santos Carvalho, Marisa Narciso Fernandes

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