The purpose of this research was to study chemical characteristics of precipitation in Peradeniya (Latitude 6.973701, Longitude 79.915256), Kandy District in Sri Lanka. This study was conducted during 2012 to 2014, and wet precipitation was analyzed for pH, conductivity, Na⁺, NH₄⁺, K⁺, Mg²⁺, Ca²⁺, F⁻, Cl⁻, NO₃⁻, SO₄²⁻, Pb, Cu, Mn, Al, Zn, and Fe for a total of 125 samples. Less than 2% events of acidic precipitation were recorded, and the VWA of the major ionic species present in precipitation samples were in the order of Ca²⁺ > Na⁺ > Cl⁻ > NH₄⁺ > SO₄²⁻ > K⁺ > NO₃⁻ > Mg²⁺. Neutralization of acidity of precipitation is much more related to CaCO₃ than NH₃, and the presence of high content of Ca²⁺ strongly supports this fact. When considering marine contribution, SO₄²⁻/Na⁺, Ca²⁺/Na⁺, Mg²⁺/Na⁺, and K⁺/Na⁺ ratios are higher than the reference value suggesting that contribution of sources other than marine. Concentration of Zn is the highest while that of Mn is the lowest. Principal component analysis identified probable sources for major ionic and elemental sources as both natural and anthropogenic sources such as vehicular emission due to heavy traffic, waste incineration, bio mass burning, brass industry, and construction.

这项研究的目的是研究斯里兰卡康提地区Peradeniya（纬度6.973701，经度79.915256）的降水化学特征。本研究在2012年至2014年进行的，并分析pH，电导率，钠湿式沉淀⁺，NH ₄ ⁺，K ⁺，Mg的²⁺，钙²⁺，F ^- ，氯^-，NO ₃ ^-，SO ₄ ^{2 -}，Pb，Cu，Mn，Al，Zn和Fe，共125个样品。记录到的酸性沉淀事件少于2％，并且沉淀样品中存在的主要离子物种的VWA顺序为Ca ²⁺  > Na⁺  >氯^-  > NH ₄ ⁺  > SO ₄ ^2-  >ķ ⁺  > NO ₃ ^-  >镁²⁺。与NH _3相比，中和沉淀的酸度与CaCO _3的关系更大，并且高含量的Ca ²⁺的存在强烈支持这一事实。考虑海洋因素时，SO ₄ ^2- / Na ⁺，Ca ²⁺ / Na ⁺，Mg ²⁺ / Na ⁺和K ⁺ / Na ⁺比率高于参考值，表明海洋以外来源的贡献。Zn的浓度最高，而Mn的浓度最低。主成分分析确定了主要离子和元素来源的可能来源，包括自然来源和人为来源，例如由于交通繁忙，垃圾焚烧，生物大规模燃烧，黄铜工业和建筑业引起的车辆排放。