KRISHI
ICAR RESEARCH DATA REPOSITORY FOR KNOWLEDGE MANAGEMENT
(An Institutional Publication and Data Inventory Repository)
"Not Available": Please do not remove the default option "Not Available" for the fields where metadata information is not available
"1001-01-01": Date not available or not applicable for filling metadata infromation
"1001-01-01": Date not available or not applicable for filling metadata infromation
Please use this identifier to cite or link to this item:
http://krishi.icar.gov.in/jspui/handle/123456789/54783
Title: | EFFECT OF DISSOLVED ORGANIC CARBON IN MODIFYING THE TOXICITY OF INORGANIC MERCURY TO FISH AND ITS IMPLICATION ON MERCURY ACCUMULATION BY FISH IN PONDS AND LAKES |
Other Titles: | Not Available |
Authors: | Subhendu Datta Shyamal Chandra Sukla Das |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | ICAR::Central Inland Fisheries Research Institute |
Published/ Complete Date: | 2017-06-26 |
Project Code: | Not Available |
Keywords: | Mercury Dissolved organic matter dissolved organic carbon Acute Toxicity Cyprinus carpio var. communis Common carp |
Publisher: | Indian Fisheries Association |
Citation: | Datta, S and Das, S.C.S., 2017. Effect of dissolved organic carbon in modifying the toxicity of inorganic mercury to fish and its implication on mercury accumulation by fish in ponds and lakes. J. Indian Fish Assoc., 44(1): 85-92ot Available |
Series/Report no.: | Not Available; |
Abstract/Description: | Due to global industrialization, large quantity of metals enters to the aquatic ecosystems. The behaviour of metals in the aquatic systems is dependent on various environmental factors. The present study, was conducted to know the effect of dissolved organic matter on the level of toxicity of inorganic mercury (Hg) on the common carp, Cyprinus carpio var. communis fry (av. length: 3.9 0.5 cm and av. weight: 0.9 0.20g). Acute toxicity test was conducted employing static bioassay method with constant aeration. At different dissolved organic carbon (DOC) levels, e.g., 0.02, 3.3, 7.6, 10.7, 14.5, 23.8, 32.4 and 44.5 mg/L, the ET values 50 (h) of mercury at 1.0 mg/L were 30.74, 102.85, 116.82, 150.37, 157.34, 185.46, 234.09 and 297.89h, respectively. As the concentration of DOC increased (0.02 to 44.5 mg/L), with the increasing amount of natural organic matter; the toxicity of mercury decreased almost 10 times (ET value increased from 50 30.7 to 297.9 h). This substantial reduction of mercury acute toxicity was due to the formation of mercury complexes with dissolved organic carbon that. contains organic ligands, which have S-, N- and O- containing functional groups for complexation. This provides the protective capacity of many natural lakes and wetlands of tropical countries which have high concentration of DOM against metal toxicants like mercury. To test this hypothesis, mercury level in the sediment, water and fish flesh (common carp and catla) of three sewage-fed fisheries units of Kolkata were tested. though at the entry point the sediment contained mercury (0.36 – 0.65 ppm), mercury level was either below detectable limit or below the permissible limit (<0.001 – 0.058 ppm) |
Description: | Not Available |
ISSN: | 0972-3854 |
Type(s) of content: | Research Paper |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Journal of Indian Fisheries Association |
Journal Type: | Peer reviewed Journal |
NAAS Rating: | 4.14 |
Volume No.: | 44 (1) |
Page Number: | 85-92 |
Name of the Division/Regional Station: | Regional Centre, ICAR-Central Inland Fisheries Research Institute, Allahabad, Uttar Pradesh 211 002 India |
Source, DOI or any other URL: | Not Available |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/54783 |
Appears in Collections: | FS-CIFRI-Publication |
Files in This Item:
There are no files associated with this item.
Items in KRISHI are protected by copyright, with all rights reserved, unless otherwise indicated.