The present study was undertaken to evaluate the chemical properties of Buriganga and Turag river water, Bangladesh. Water samples were collected from 15 locations of each river from January to February, 2016 to analyze chemical properties, which includes: pH, EC, TDS, DO, cations ( Na+, K+, Ca2+, Mg2+), Anions (Cl-, HCO3-, SO42-, CO3-, PO43-) and heavy metal contents (Pb, Cd, Ni, Cr, As, Zn, Cu). The average value of pH was 8.47 and 8.41 in Buriganga and Turag water indicating moderate alkalinity. The average values of EC content of Buriganga and Turag river water were 327 and 272 ?S cm-1 indicating low to moderate salinity. The mean values of TDS and DO content were 1468.4 and 2.93 mg L-1 in Buriganga river water and 1202 and 3.91 mg L-1 in Turag river water, respectively. Average concentration of Pb, Cd, Ni, Cr, As, Zn, and Cu found in Buriganga and Turag river water were 0.068, 0.016, 0.081, 0.237, 0.006, 0.473, 0.19 mg L-1 and 0.012, 0.021, 0.015, 0.034, 0.002, 0.075, 0.014 mg L-1, respectively. From the study it is found that the value of Pb, Cd and Cr content in Buriganga and Cr content in Turag river water exceeded the standard limits of DoE and WHO. Therefore, Government and local people should take some effective measures to control the pollution of Buriganga and Turag river.J. Environ. Sci. & Natural Resources, 9(2): 9-14 2016
There are different types of essential nutrients are found in vegetables which are good for human health. But now a days the vegetables which are irrigated with Buriganga and Turag river water may be contaminated with heavy metals because of industrial effluents discharge into the Buriganga and Turag river water. The present study was conducted to investigate the levels of heavy metals like Lead (Pb), Cadmium (Cd), Cupper (Cu), Chromium (Cr), Zinc (Zn), Arsenic (As), Nickel (Ni), and Iron (Fe) in Indian Spinach irrigated with polluted Buriganga and Turag river water. Heavy metals contaminated water and vegetable samples were analyzed by Atomic Absorption Spectrophotometer. The Pb, Cd, Ni, Cr, As, Zn, and Cu contents in Buriganga river water applied in Indian spinach ranged from 0.798-2.06, 0.011-0.60, 0.001-3.87, 0.378-1.25, 0.001-0.610, 6.21-23.24, and 2.01-13.69 µg g -1 , respectively and those of Turag river water ranged from 0.023-0.781, 0.001-0.610, 0.001-0.360, 0.133-0.279, 0.001-0.360, 3.16-8.97, and 0.210-6.47 µg g -1 , respectively. The root and shoot length was decreased from 5.3 to 3.2 cm and from 7.2 to 5.5 cm for Buriganga river water applied plant samples. The root and shoot length of Turag river water applied plant samples were decreased from 3.83 to 3.10 cm and 6.93 to 6.18 cm, respectively. The number of leaves was decreased from 7.46 to 5.58 and 8.69 to 5.32 for Buriganga and Turag river water applied plant samples, respectively. The yield of Buriganga and Turag river water applied Indian spinach sample decreased 23.06% and 24.70% from the control plant sample. It is recommended that in spinach plant the concentration of Pd, Zn and Cu crossed the standard limits of FAO and WHO, indicating a potential risk to human body. Awareness should be created among the farmers about the serious consequences of using polluted river water for growing leafy vegetables in city areas.
Assessment the effect of industrial wastewater on the yield and trace element contents of red amaranth was carried out by this study. Thirty wastewater samples were collected from five major environment-polluting industries namely pharmaceuticals, dyeing, leather, food, and plastic industries at three different locations. Atomic Absorption Spectrophotometer was used for analyzing the trace elements in the wastewater-irrigated samples of red amaranth. Higher mean concentrations of Pb, Cd, Ni, Cr, As, Zn, and Cu in red amaranth were 0.97, 0.20, 1.23, 52.72, 0.52, 0.85, and 2.62 ?g g-1. The percentage of yield reduction in red amaranth were 11.06, 12.73, 14.07, 3.46, 7.82 % for T2, T3, T4, T5 and T6 respectively compared to distilled water control (T1). The results concludes that the wastewater samples of pharmaceuticals, dyeing, leather and plastic industries were more polluted than the wastewater of food industries. Vegetables grown in industrial areas contain trace elements viz. Cr, Ni and Cu which would be health hazardous for consumer.J. Environ. Sci. & Natural Resources, 9(2): 27-30 2016
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