Comparatve studies on the heavy metal concentration in leaf, stem and root of corchorus olitorius l. irrigated with sewage water and tap water respectively
Table Of Contents
Chapter ONE
INTRODUCTION
- 1.1Introduction
- 1.2Background of Study
- 1.3Problem Statement
- 1.4Objectives of Study
- 1.5Limitations of Study
- 1.6Scope of Study
- 1.7Significance of Study
- 1.8Structure of the Research
- 1.9Definition of Terms
Chapter TWO
LITERATURE REVIEW
- 2.1Review of Heavy Metal Contamination in Plants
- 2.2Heavy Metal Uptake Mechanisms in Plants
- 2.3Health Implications of Heavy Metal Contamination
- 2.4Impact of Heavy Metal Contamination on Soil Health
- 2.5Methods for Heavy Metal Analysis in Plant Tissues
- 2.6Factors Affecting Heavy Metal Accumulation in Plants
- 2.7Regulation and Guidelines for Heavy Metal Levels in Plants
- 2.8Comparative Studies on Heavy Metal Concentrations in Various Plant Parts
- 2.9Sustainable Agriculture Practices for Mitigating Heavy Metal Contamination
- 2.10Future Research Directions in Heavy Metal Contamination Studies
Chapter THREE
RESEARCH METHODOLOGY
- 3.1Research Design
- 3.2Sampling Techniques
- 3.3Data Collection Methods
- 3.4Experimental Setup
- 3.5Statistical Analysis Plan
- 3.6Ethical Considerations
- 3.7Validation of Research Instruments
- 3.8Data Analysis Procedures
Chapter FOUR
DATA PRESENTATION AND ANALYSIS
- 4.1Analysis of Heavy Metal Concentrations in Corchorus olitorius L.
- 4.2Comparison of Heavy Metal Levels in Leaves, Stems, and Roots
- 4.3Influence of Irrigation Water Source on Heavy Metal Uptake
- 4.4Seasonal Variations in Heavy Metal Accumulation
- 4.5Correlation Analysis of Heavy Metal Content in Different Plant Parts
- 4.6Discussion on Factors Affecting Heavy Metal Distribution
- 4.7Comparison with Existing Literature on Heavy Metal Contamination
- 4.8Implications for Sustainable Agriculture Practices
Chapter FIVE
SUMMARY, CONCLUSION AND RECOMMENDATIONS
- 5.1Summary of Findings
- 5.2Conclusion and Interpretation of Results
- 5.3Contributions to Existing Knowledge
- 5.4Recommendations for Future Research
- 5.5Practical Implications for Agricultural Practices
Thesis Abstract
The level of accumulation of heavy chemicals in the leaves, stem and roots of Corchorusolitorius seedlings irrigated with sewage (Sewage effluent) and tap water to maturity respectively was investigated. Prior to irrigation, water quality indicators and physico-chemical properties of the two water sources were analysed. The experiment, a completely randomized design was carried out in a screen house in the Botanic Garden of the Department of Plant Science and Biotechnology, University of Nigeria, Nsukka and lasted for four months. The results showed that sewage water had higher values of biochemical oxygen demand (BOD), chemical oxygen demand (COD), and temperature than tap water. The results also showed that tap water had higher values of dissolved oxygen (DO) and transparency than sewage water. The results further showed that sewage water had higher values of the analysed physico-chemical properties than tap water. Again, it showed that sewage water enhanced better seedling growth than tap water. Cadmium, Mercury, Zinc, Copper, Lead and Arsenic accumulation in the leaves, stem and roots were higher in seedlings irrigated with sewage water when compared with those irrigated with tap water. The results further showed that the accumulation of heavy chemicals in the leaves, stem and roots of the seedlings irrigated with broth water sources, (Sewage and tap) were higher than the accepted standard of the Federal Environmental Protection Agency (FEPA). Based on the results obtained, it is recommended that continued production of leaf vegetables off-season using sewage water be avoided, because of possible health hazards posed by continued consumption of such vegetables.
Thesis Overview
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