Topic
Zinc toxicity
About: Zinc toxicity is a research topic. Over the lifetime, 727 publications have been published within this topic receiving 34583 citations. The topic is also known as: zinc poisoning.
Papers published on a yearly basis
Papers
More filters
TL;DR: The objective of this research was to determine the toxic effects and degradation of pentachlorophenol (PCP) in the presence of zinc in anaerobic propionate systems and found that a combined competitive-uncompetitive inhibition model was the best-fit model in the absence of both PCP and zinc for propionates degradation.
Abstract: The objective of this research was to determine the toxic effects and degradation of pentachlorophenol (PCP) in the presence of zinc in anaerobic propionate systems. Anaerobic toxicity assays (ATA), batch kinetic studies, and biodegradation studies were performed using serum bottles. PCP inhibition was modeled using both uncompetitive and noncompetitive inhibition kinetic models with an inhibition coefficient, K{sub I}, of 0.06 mg/L. Zinc toxicity showed that the competitive inhibition model was the best-fit with a K{sub I} of 1.1 mg/L. A combined competitive-uncompetitive inhibition model was the best-fit model in the presence of both PCP and zinc for propionate degradation. In the biodegradation studies, PCP removals were 72, 64, and 54% with spiked PCP concentrations of 2, 3, and 5 mg/L, respectively. In the presence of zinc, the removal of 2 mg/L and 3 mg/L of PCP decreased to 60% and 53%, respectively. The intermediates of PCP degradation were 2,4,6-trichlorophenol, 2,4-dichlorophenol, 4-chlorophenol, 2,3,5-trichlorophenol, 3,5-dichlorophenol, and 3-chlorophenol; lower concentrations of these intermediates were observed in the presence of zinc.
19 citations
TL;DR: This last species has the potential for revegetation of areas with moderately high soil Zn concentration and for phytostabilization purposes, and future research evaluating the tolerance to multiple metal stress under field conditions should confirm S. parayba suitability in Zn contaminated areas of tropical regions.
19 citations
TL;DR: In the case of Xenopus tadpoles, pre-treatment with sub-lethal concentrations of cadmium or zinc protects against subsequent exposure to either metal, while zinc gives moderate protection against either metal.
19 citations
TL;DR: In this paper, stormwater runoff from three sawmills on Vancouver Island, BC, was tested for acute toxicity with juvenile rainbow trout, and all except one of the 27 samples tested exhibited toxicity.
19 citations
TL;DR: The results suggest that the influence of soil properties on survival is modulated by toxicodynamics rather than toxicokinetics, which may be more important for soil invertebrate protection than metal concentration at contaminated sites.
18 citations