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Title: Chlorinated pesticide residues in sediments from the Arabian Sea along the central west coast of India

Abstract

The problem of environmental contamination by persistent chlorinated pesticides still evokes major concern due to the presence of their residues in the environment and in human tissues. In developing countries like India organochlorine insecticides, especially DDT are extensively being used in agriculture and vector control programs. Few data are available on their levels of concentration from the seas around India. Persistent pesticides residues can be expected to accumulate in marine sediments. However, very little data on this are available along the Indian coast. An attempt has been made in the present communication to identify and quantify some of the chlorinated pesticides residues in the marine sediments collected from different region along the central west coast of India. This is a part of our ongoing project to monitor and map pollutants within the exclusive economic zone of India.

Authors:
;
Publication Date:
Research Org.:
National Institute of Oceanography, Dona Paula, India
OSTI Identifier:
5359796
Resource Type:
Journal Article
Resource Relation:
Journal Name: Bull. Environ. Contam. Toxicol.; (United States); Journal Volume: 39:6
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; CHLORINATED AROMATIC HYDROCARBONS; GAS CHROMATOGRAPHY; SEDIMENTS; QUANTITATIVE CHEMICAL ANALYSIS; WATER; ARABIAN SEA; ELECTRON-CAPTURE DETECTORS; INDIA; METABOLITES; NICKEL 63; PESTICIDES; AROMATICS; ASIA; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CHEMICAL ANALYSIS; CHROMATOGRAPHY; DEVELOPING COUNTRIES; EVEN-ODD NUCLEI; HALOGENATED AROMATIC HYDROCARBONS; HYDROGEN COMPOUNDS; INDIAN OCEAN; INTERMEDIATE MASS NUCLEI; ISOTOPES; MEASURING INSTRUMENTS; NICKEL ISOTOPES; NUCLEI; ORGANIC CHLORINE COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; OXYGEN COMPOUNDS; RADIOISOTOPES; RADIOMETRIC GAGES; SEAS; SEPARATION PROCESSES; SURFACE WATERS; YEARS LIVING RADIOISOTOPES; 520200* - Environment, Aquatic- Chemicals Monitoring & Transport- (-1989)

Citation Formats

Sarkar, A., and Gupta, R.S. Chlorinated pesticide residues in sediments from the Arabian Sea along the central west coast of India. United States: N. p., 1987. Web. doi:10.1007/BF01689597.
Sarkar, A., & Gupta, R.S. Chlorinated pesticide residues in sediments from the Arabian Sea along the central west coast of India. United States. doi:10.1007/BF01689597.
Sarkar, A., and Gupta, R.S. 1987. "Chlorinated pesticide residues in sediments from the Arabian Sea along the central west coast of India". United States. doi:10.1007/BF01689597.
@article{osti_5359796,
title = {Chlorinated pesticide residues in sediments from the Arabian Sea along the central west coast of India},
author = {Sarkar, A. and Gupta, R.S.},
abstractNote = {The problem of environmental contamination by persistent chlorinated pesticides still evokes major concern due to the presence of their residues in the environment and in human tissues. In developing countries like India organochlorine insecticides, especially DDT are extensively being used in agriculture and vector control programs. Few data are available on their levels of concentration from the seas around India. Persistent pesticides residues can be expected to accumulate in marine sediments. However, very little data on this are available along the Indian coast. An attempt has been made in the present communication to identify and quantify some of the chlorinated pesticides residues in the marine sediments collected from different region along the central west coast of India. This is a part of our ongoing project to monitor and map pollutants within the exclusive economic zone of India.},
doi = {10.1007/BF01689597},
journal = {Bull. Environ. Contam. Toxicol.; (United States)},
number = ,
volume = 39:6,
place = {United States},
year = 1987,
month =
}
  • In Saudi Arabia, trace metal enrichment of marine environment may result from a number of anthropogenic activities, especially from petroleum and petrochemical industry wastes. The objective of this study was to determine metal concentrations in the sediments from the Arabian Gulf coast of Saudi Arabia. This study may serve as baseline information for future evaluation of metal pollution in this region.
  • Although the sediments of coastal marine mangrove forests have been considered a minor source of atmospheric methane, these estimate have been based on sparse data from similar areas. We have gathered evidence that shows that external nutrient and freshwater loading in mangrove sediments may have a significant effect on methane flux. Experiments were performed to examine methane fluxes from anaerobic sediments in a mangrove forest subjected to secondary sewage effluents on the southwestern coast of Puerto Rico. Emission rates were measured in situ using a static chamber technique, and subsequent laboratory analysis of samples was by gas chromatography using amore » flame ionization detector. Results indicate that methane flux rates were lowest at the landward fringe nearest to the effluent discharge, higher in the seaward fringe occupied by red mangroves, and highest in the transition zone between black and red mangrove communities, with average values of 4 mg CH[sub 4] m[sup [minus]2] d[sup [minus]1], 42 mg CH[sub 4] m[sup [minus]2] d[sup [minus]1], and 82 mg CH[sub 4] m[sup [minus]2] d[sup [minus]1], respectively. Overall mean values show these sediments may emit as much as 40 times more methane than unimpacted pristine areas. Pneumatophores of Aviciennia germinans have been found to serve as conduits to the atmosphere for this gas. Fluctuating water level overlying the mangrove sediment is an important environmental factor controlling seasonal and interannual CH[sub 4] flux variations. Environmental controls such as freshwater inputs and increased nutrient loading influence in situ methane emissions from these environments. 34 refs., 3 figs., 3 tabs.« less