Studi Logam Berat dalam Air dan Sedimen Kolong Retensi Kacang Pedang Pasca Penambangan Timah

Abstract

Tin mining activities in hundred years in Bangka Island formed thousands of pond water, referred to as
kolong. The water from kolong has been utilized by arounds people as a source of clean water and to
be the main water resources by local water company (PDAM). Unconventional mining around kolong
caused contamination of water by heavy metals from tailing, therefore the study of heavy metals in
kolong is very important to do. Data collection was done through the approach of physical and
chemical parameters of water and sediment Kolong Retention Kacang Pedang. Water and sediment
physical data collection for getting parameter of colour, flavor and smell. Chemical analysis of water
and sediment cover of Dissolved Oxigen (DO), Chemical Oxigen Demand (COD), Total Dissolved
Solid (TDS) and Total Suspended Solid (TSS), pH, and the content of heavy metals using
spectrophotometer and XRF. As a result, the heavy metal composition of Fe, Cu, Pb and Cd in
water exceed the normal threshold. Element Fe in sediment has the largest number over all sample,
followed by Zn, Cr, Cu, Pb and As. The metals of Cu and Zn is absent from sediment around outlet
area of Kolong Retention Kacang Pedang