Research Article

Chemical Characteristics of Rainwater in Sumatera, Indonesia, during 2001–2010

Table 1

Rainfall, pH (rainwater acidity), comparative ratio between annual depositions of /(nss- + ) with nss- and /( + ) with , and also comparative ratio between depositions of Na+ with Cl. Unit of the ion depositions in meq⋅m−2⋅y−1.

LocationYearRainfall (mm)/(nss- + )/( + )pHCl/Na+

Kototabang200112090.240.545.161.46
200217980.280.735.562.66
200331270.440.985.392.88
200424050.300.314.831.32
200522870.130.144.731.27
200612480.320.314.620.38
200734300.230.135.331.30
200824810.350.275.330.73
200926560.030.094.731.75
201020640.140.434.971.33

Medan200121060.530.334.631.59
200213420.450.625.092.77
200317650.371.005.293.97
20043450.390.655.811.95
2005
2006
20075280.400.535.171.54
20086450.300.445.201.13
200912390.350.395.031.62
201012090.340.365.301.15

Lampung20014520.440.234.521.35
20025290.430.885.631.39
200314530.300.904.892.43
2004
2005
2006
20077570.380.375.681.29
20086300.410.195.980.78
200918210.330.255.391.03
201023900.350.265.550.96

Palembang200121000.390.175.391.16
200217010.330.254.751.88
2003
200415660.230.145.191.11
200520040.310.185.021.37
200616540.240.194.731.69
200722670.340.225.592.03
200811530.340.115.750.95
200923170.180.135.601.78
201034700.290.145.491.07

Note: : no sampling of rainwater in Medan, Palembang, and Lampung.