PENDUGAAN PENCEMARAN AIR TANAH DI TEMPAT PEMBUANGAN SAMPAH LANDASAN ULIN TIMUR DENGAN METODE GEOLISTRIK KONFIGURASI SCHLUMBERGER
ABSTRACT: Along with the
increment of human population, ground water pollution also tends to increase.
It primarily due to the accumulation of waste which could harm the public
health. Trash or waste is one of the important issues which could contaminate
ground water, especially waste landfills. Ground water that has been
contaminated with liquid waste (leachate) can affect the quality of ground
water. This study aimed to determine the composition of rocks, layers and depth
of ground water around waste landfills (TPS) and to determine whether ground
water around the TPS is contaminated or not. Estimation of groundwater
pollution could be determined by measurement using geoelectric method with
schlumberger configuration. It showed
the presence of leachate layer at depth of 0,51 – 8,51 m with measured
resistivity of 3,89 – 9,63 Ohm.meter, while groundwater is at depth of 22,92 –
26,59 m with resistivity value of 88,98 – 128,75 Ohm.meter. AAS sample test has
been conducted to determine whether the ground water around TPS is contaminated
or not. The test results using AAS
showed groundwater around TPS was contaminated with Lead (Pb), iron (Fe) and
Cadmium (Cd). The evidence was the value of their concentrations in three water
samples which exceeded the thresholds in accordance with the requirements of
drinking water. Threshold for Pb, Fe and Cd are 0,01 ppm, 0,3 ppm and 0,003
ppm, respectively. From the measurement results of sample 1, 2 and 3 couls be
obtained the concentration of Pb are
0,084 ppm, 0,044 ppm and 0,091 ppm, the concentration of Fe are 0,812 ppm for
1,018 ppm and 0,203 ppm, while the concentration of Cd are 0,012 ppm, 0,017 ppm
and 0,01 ppm.
Penulis: Denok Dwi Priyanti,
Sri Cahyo Wahyono, Simon Sadok Siregar
Kode Jurnal: jpfisikadd140910
