Cations chemistry characterization of Rainwater of the Varanasi district in the indo-gangetic plains, India

Abstract

The chemical composition of rainwater is good indicators of the air pollution with rapid economic developing; air quality has greatly changed in Varanasi. To investigate Chemical feature of precipitation and atmospheric pollution characteristics. The current study was aimed to assess the different cationic concentrations in rain water of Varanasi. Rain waters samples were collected in rainy season from roof of the Bal Gangadhar Tilak Hostel at Banaras Hindu University, the samples were collected in pre-cleaned and sterilized polyethylene bottles of two litre capacity. All collected samples were analyzed for major cations using APHA (1992) [1] procedure and suggested precautions were taken to avoid contamination. The various parameters determined were pH, EC (electrical conductivity), calcium (Ca2+), magnesium (Mg2+), pH and EC were determined by pH, conductivity meter, Ca2+, Mg2+, were estimated by titrimetric. The order of basic cations (mean) found in rain water of Varanasi was as follows: Na+>Mg2+>K+>Ca2+.