DOI: https://doi.org/10.59321/BAUETJ.V4I2.9
AUTHOR(S)
Asma Siddiqa1 and M.G. Mostafa1*
ABSTRACT
Many people who live close to coastlines rely on marine resources for their livelihood. Shipyard activities near coastal Bangladesh threaten water quality, and the marine ecosystem. This study examined the water quality near shipyard sites in Chattogram, Bangladesh. There was a range of values for DO, TDS, pH, EC, BOD, and temperature from 2.2 to 3.0, > 1000 mg/L, 5.82 to 6.33, 20.4 to 23.4 mS/cm, 63 to 105 mg/L, and 29 to 33 , respectively. The BOD, TDS, and EC readings were higher than the WHO-recommended level. The concentration of heavy metal ions observed in the present study appeared in the following order: Fe>Pb> Cr> Mn> Zn> Cu> Ni>Cd. Additionally, all sampling locations’ HEI (heavy metal evaluation index) and HPI (heavy metal pollution index) values showed increased contamination level. Large-scale shipyard operations were the primary source of pollution, as demonstrated by principal component analysis and Pearson correlation. The dendrogram showed two clusters of six sampling points, indicating the presence of EC, Fe, Mn, TDS, Cd, and Zn from the same source of the study area. All results from the analysis demonstrated an increased level of pollution. So, there is an urgent need to reduce pollution through proper guidelines.