Abstract
Rainwater samples (N = 51) were collected at Rampur, an areafree from anthropogenic activity during the monsoon of 1997 and1998. The concentration of ions follows a general pattern as Ca> NH4 > Mg > SO4 > Cl > F >Na > NO3 > K > HCOO >CH3 COO. The pH of precipitation ranges between 5.9 and 7.4. The levels of Ca and Mg at this site are higher than otherremote sites, probably dominated by particles of soil origin.Good correlation between Ca, NO3, SO4, HCOO and CH3COO indicate that a fraction of NO3, SO4, HCOOand CH3COO may be derived from soil or associated with Ca and Mg after neutralization. The order of neutralization factorCa (2.19) > NH4 (1.26) = Mg (1.26) indicates that majorneutralization occurred by Ca. Factor analysis suggested thatCa, Mg, Na, K, NO3, SO4, HCOO and CH3COO arecontributed by soil. NH3 is known to exist as(NH4)2SO4, NH4NO3 and NH4Cl. Theymay be formed in the atmospheric water droplets by scavenging ofaerosols and reaction of gaseous species.
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Singh, S.P., Khare, P., Satsangi, G.S. et al. Rainwater Composition at a Regional Representative Site of a Semi-Arid Region of India. Water, Air, & Soil Pollution 127, 93–108 (2001). https://doi.org/10.1023/A:1005295215338
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DOI: https://doi.org/10.1023/A:1005295215338