Heavy metal concentrations of precipitation in east Madhya Pradesh of India

Rain is a main source for getting water to the ecosystem in the Indian cont inent. The factors i.e. operation of several heavy metal industries, coming of distant pollutants, high rain fall, etc. are agent for the precipitatio n of a high amount of the heavy metals in the eastern region of Madhya Prad esh state of India. The particulate matters and gases emitted are scavenged out with rain water for the distribution to the ecosystem. 216 event rain water samples were collected at three sites (representative of urban, indus trial and remote): Raipur, Korba and Ambikapur of the country in the year 1 995. 60 (30x2) event samples were collected at site Raipur during years, 19 96-1997. The volume weighted mean concentration and fluxes distribution of most abundant heavy metals i.e. Mn, Fe, Cu, Zn, Hg, Pb are described. Their concentration level found in the rain water was: Pb>>Zn >>Cu >> Fe >Mn>>>H g.