Deposition, acute toxicity, and bioaccumulation of nickel in some freshwater organisms with best-fit functions modeling

Anupam Ghosh, Anilava Kaviraj*, Subrata Saha

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

7 Citations (Scopus)

Abstract

Although nickel (Ni) frequently enters into water, documents on speciation of the metal and its toxicity to freshwater organisms are scanty. Laboratory experiments, made in this study, with 1.0–5.0 mg/L of Ni revealed that Ni was not quickly removed from water. Application of cubic regression followed by classical optimization technique showed that maximum reduction time (T) of Ni in water ranged between 60 to 65 h. Ninety-six hours of LC50 value of Ni to crustacean Diaptomus forbesi, fish Cyprinus carpio, and worm Branchiura sowerbyi was respectively 5.43, 14.70, and 19.73 mg/L. Normalizing the lethal values and plotting them against time, it was observed that C. carpio was more sensitive than D. forbesi, which was not reflected in the 96-h LC50 values. However, sensitivity of these organisms to Ni was better explained by power regression equation (M = aNib), which exhibited that mortality (M) of D. forbesi and B. sowerbyi increased slowly between 24 to 72 h, increasing sharply at 96 h, while mortality of C. carpio increased steadily every 24 till 96 h. Experiment with 1.0 mg/L of Ni in outdoor vats showed that crustacean zooplankton and worms accumulated high concentration of Ni, while only gut and liver tissues of fish C. carpio accumulated trace and moderately high concentration of Ni, respectively. It is assumed that toxicity of Ni to fish is mediated primarily through gill.

Original languageEnglish
JournalEnvironmental Science and Pollution Research
Volume25
Issue number4
Pages (from-to)3588-3595
Number of pages8
ISSN0944-1344
DOIs
Publication statusPublished - 1 Feb 2018
Externally publishedYes

Keywords

  • Bioaccumulation
  • Heavy metals
  • Nickel
  • Pollution
  • Regression
  • Toxicity

Fingerprint

Dive into the research topics of 'Deposition, acute toxicity, and bioaccumulation of nickel in some freshwater organisms with best-fit functions modeling'. Together they form a unique fingerprint.

Cite this