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Physico chemical parameters of dumped food leachates at dump site adjacent agricultural soil at Chapra city, Bihar were investigated for possible pollution impacts. Soil samples were collected in three replicates from two sampling points within the dump site and for control soil samples were collected about 200m. Standard methods were used to determine the following parameters. The pH of leachate affected soil ranged between 7.3 to 7.5 while in control it was 7.6 to 7.8. The electric conductivity 3.6 to 3.82 while in control 1.89 to 1.91, sodium % 5.62 to 7.86 in LAS and 4.25 to 4.68 in control, organic matter g/kg = 16.7 to 20.5 in LAS and 14.30 to 17.64 in control. Calcium carbonates (g/kg) 288.6 to 305.4 in LAS and 264.6 to 280.2 in control. Total nitrogen % in LAS 0.36 to 0.42% and 0.2 to 0.24 in control available phosphorous in mg/kg in LAS. 14.5 to 11.6 mg/kg and 8.62 and 9.15 mg/kg in control. Available potassium in LAS required between 432.4 to 451.6 mg/kg and 332.3 to 362.7 mg/kg in control amount of calcium 14.2 to 16.5 Cmol/kg in LAS and 12.2 to 12.8 Cmol/kg in control. The magnesium contents ranged between 4.2 to 4.6 Cmol/kg in LAS and 3.60 to 3.90 C mol/kg in control.

The complexes of Nickel(II) and Copper(II) metals have been prepared with the macrocyclic ligand-1,7,9, 15-tetra-aza-3, 5,11,13- - difurano-cyclo-1,6,9,14-hexa deca tetra-ene. The complexes of both the metals have been characterised by usual physico-chemical methods such as elemental analysis, measurement of electrical conductance, magnetic moment and electronic transition spectra of the complexes and I.R. spectral behaviour of both ligands and the complexes. All the complexes of both the metals have been found to be non-electrolyte, mono-meric, paramagnetic with octahedral geometryy . T he general molecular formula of the complexes have been found to be [M(L) (X)2] Where M= Nickel(II) and Copper(II) Cations, L= ligand and X= monodentate anions.

These days the waste food may be cooked or expired packaged foods are dumped in the soil at a particular spot that is away from the city. These materials are decomposed by the microbes and resulting contaminated water is called leachate. This can permeate through the soil, and may pollute the surface and ground water present in the vicinity. In the present study, two ponds were selected for physico-chemical analysis of water adjacent to the common waste food dumping site. One pond was 8 M away and another 10 meter. The temperature ranged from 290C to 300C, pH 6.25 to 6.58, TDS 220 mg/L to 360 mg/L, turbidity 251.25 to 286.85 NTU, conductivity 305 µs cm to 286 µs cm, alkalinity 154 mg/L to 186 mg/L, D.O. 4.6 mg/L to 6.4 mg/L, Chloride 38.65 to 32.54 mg/L, total hardness 305-380 mg/L, calcium hardness 45 mg/L to 58 mg/L, Magnesium hardness 92 mg/L to 125 mg/L respectively. Heavy metals like Fe ranged between 0.640 to 0.850 mg/L, Cadmium 0.306 mg/L to 0.525 mg/L. The heavy metals like Pb, Cu, Mn were not found in any pond water studied here.