I= GEOCHEMICAL STUDIES OF HEAVY METALS IN THE SEA WATER ALONG KARACHI MAKRAN COAST
Pakistan Research Repository Home
 

Title of Thesis
GEOCHEMICAL STUDIES OF HEAVY METALS IN THE SEA WATER ALONG KARACHI MAKRAN COAST

Author(s)
Majid Mumtaz
Institute/University/Department Details
Department of Chemistry University of Karachi
Session
2002
Subject
Chemistry
Number of Pages
414
Keywords (Extracted from title, table of contents and abstract of thesis)
heavy metals, karachi makran coast, toxicity, beach sediments, fish flesh samples, as, cd, pd, hg, ni, co, cu, fe, mn, zn

Abstract
Each sediment, water and fish flesh samples from 13 locations of Karachi and Makran Coasts have been in investigated quantitatively for the concentration of heavy metals As, Cd, PD, Hg, Ni, Co, Cu, Fe, Mn and Zn. Further subdivision of the locations into sites have been made on the basis beach slope conditions, texture of beach sediments, geomorphic features, industrialization of coastal region, density of population, in-pouring effluents through the rivers, selected on the basis of their toxicity and biogenic e4ffects on human beings and other biota appear to show their relative concentration in the in-pouring pollutants and later on partitioning in sediments, water and fish flesh samples in accordance with the changes in the local geochemical controls.

The heavy metals presence and relative concentrations work as indicators of the industrial installations in the coastal area, which contribute untreated effluents onto the beach.

The heavy metals partitioning in sediments, water and fishes in relation to the local, geological, geomorphologic and geochemical controls have been discussed.

The effects of the metals as pollutants their differential absorption by the fishes, which directly affect the human health due to their heavy consumption as a food, have been evaluated. The higher concentration of the element in a particular location in relation to other elements has been illustrated.

Each heavy metal under study has been discussed with the help of profile diagrams of sediments, water and fish flesh samples in addition to statistical evaluation of the chemical analysis data. Great degree of compatibility in the results concluded from the profiles diagram of chemical data and statistical analyses has been observed. The results of the present work show great deal of similarities to the conclusions of the previous workers form different parts of the world carried under varying geological, geographical and geochemical controls.

Variations in the concentration of each heavy metal within a location at different sites and between the locations have been discussed on the basis of types of industries and the density of population at the coast.

Remedial measures to heavy metal pollution in the in-pouring industrial and anthropogenic effluents have been recommended to save coastal marine environment, flourishing of marine life specially the fishes, which will ultimately minimize hazard of fish consumers.

Download Full Thesis
5017.37 KB
S. No. Chapter Title of the Chapters Page Size (KB)
1 0 Contents
153.98 KB
2 1 Introduction
464.54 KB
  1.1 General Statement 1
  1.2 General geology and geomorphology of costal region of Sindh and Makran . 10
  1.3 Role of climate and drainage conditions in mobilizing heavy metals 20
  1.4 Previous work 26
3 2 Basis for collection of samples and the method of sampling
458.37 KB
  2.1 Selection of sites 47
  2.2 Method of sampling 60
4 3 Selection of elements and their toxicity
168.06 KB
  3.1 Basis of selection of elements 67
  3.2 Selection elements and their toxicity 72
5 4 Geochemical study of heavy metals in beach sediments and water 87
1864.46 KB
  4.1 Objectives and investigation 87
  4.2 Study of selected elements 90
  4.3 Determination of degree of correspondence between Beach sediments and water 92
6 5 Heavy metal concentration in selected fish samplesfrom the locations under study 219
896.24 KB
  5.1 Objectives 219
7 6 Statistical analysis of heavy metals under study 291
313.31 KB
  6.1 Purpose of study 291
8 7 Discussion 331
130.79 KB
9 8 Conclusion and Recommendations 348
57.67 KB
  8.1 Conclusion 348
  8.2 Recommendations 352
10 9 References 354
109.53 KB
11 10 Appendix
898.92 KB