Effect of pH on pentachlorophenol toxicity to embryos and larvae of zebrafish (Brachydanio rerio)

Journal Article · Thu Nov 01 00:00:00 EST 1984 · Bull. Environ. Contam. Toxicol.; (United States)

DOI:https://doi.org/10.1007/BF01625593· OSTI ID:5882654

Dave, G

The hydrogen ion is an important determinant of toxicity in the aquatic environment, especially for weak acids or bases. Pentachlorophenol is a weak acid and is consequently more toxic at low pH because of increasing proportions of free phenol. For some heavy metals the toxic interaction with ambient pH is complicated by complexation with organic and inorganic compounds. These complexes are affected by pH, and bioassays may be the easiest and most reliable method of determining the influence of pH in such cases. The objective of this study was to find a simple laboratory procedure for determination of the effect of pH on the toxicity of various chemicals added to or already present in various samples of ground and surface waters. Pentachlorophenol was selected as a reference toxicant and positive control because of its established pH-toxicity interaction in fish.

• Research Organization: Univ. of Goeteborg, Sweden
• OSTI ID: 5882654
• Journal Information: Bull. Environ. Contam. Toxicol.; (United States), Vol. 33:5
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
PH VALUE
BIOLOGICAL EFFECTS
PHENOLS
TOXICITY
BUFFERS
EMBRYOS
EXPERIMENTAL DATA
FISHES
LARVAE
SURFACE WATERS
ANIMALS
AQUATIC ORGANISMS
AROMATICS
DATA
HYDROXY COMPOUNDS
INFORMATION
NUMERICAL DATA
ORGANIC COMPOUNDS
VERTEBRATES
560305* - Chemicals Metabolism & Toxicology- Vertebrates- (-1987)