DETERMINATION OF HEAVY METALS IN DIFFERENT INDUSTRIAL SITES OF SAVAR UPAZILA OF DHAKA

Abstract

Bangladesh is a low lying area covered country with a huge number of populations. Most of the population depends upon the agricultural land and cultivation of soil. But with rapid industrialization, land especially nearside of Dhaka are going too covered with industries. As expected task, industries are polluting the surrounding environment with their discharge. The study was carried out to find out the impact of the Industrial discharge on surrounding environment and agricultural productivity. During the study a total number of 40 soil samples were collected from different target location (Tannery, pharmaceuticals, textile, dyeing, food and beverage Industry prone area) of Ashulia, Savar, Amin Bazar, Dhamsona union of Savar upazila. Later, Different parameter like pH, P, Fe, Mn, Cd, Cr, As, Pb, DO were analyzed from the collected sample. The mean value of pH, P, Fe, Mn, Pb, As in the soil sample of target area in Ashulia was 6.88, 28.27mg/kg, 122.42 mg/kg, 55.56 mg/kg, 27.88 mg/kg, 5.03 mg/kg. In savar it was 7.01, 25.98 mg/kg, 85.67 mg/kg, 44.96 mg/kg, 30.3 mg/kg, 5.39 mg/kg. In Amin Bazar it was 5.94, 24.75 mg/kg, 88.4 mg/kg, 52.62 mg/kg, 38.06 mg/kg and 5.80 mg/kg. In Dhamsona it was 6.90, 25.24 mg/kg, 94.04 mg/kg, 46.21 mg/kg, 30.67 mg/kg, 5.23 mg/kg. Soil of Amin Bazar was more acidic (5.94 pH) and soil of savar (pH 7.01) and Dhamsona (pH 6.98) union, It was almost in neutral in condition. Mean P was higher in Ashulia soil (28.24 mg/kg). Pb (38.06 mg/kg) and As (5.81 mg/kg) was higher in Amin Bazar soil. Industrial waste must not be discharged to any of the open field, River, Canal or any other water bodies before recycling. Therefore, Industrial waste is a great concern to ecosystem and environment. It destroys the ecosystem function, environment balance and health hazards. Further study should be carried out to carry out multiple variables related to waste and metal discharge to investigate the crisis so that clear and deeper information of impact may found.