Analysis of Horizontal and Vertical Distribution of Metal Contaminants in Water and Soil in Sumobito Area, Jombang District, East Java Province

Abstract

Jombang Regency is known as one of the districts that has become a center for smelting electronic waste to extract aluminum metal since 1970. However, many industry owners are ignorant and dispose of waste carelessly into house foundations, village roads and rice field boundaries. The purpose of this study is to determine how the distribution of metal contaminant concentrations in water and soil horizontally and vertically, and what factors affect the distribution pattern of these contaminants. The methods used in this study were water and soil sampling to determine the total concentration and TCLP of As, Cd, Cu, Hg, Pb, Zn, Al, and Ni ions, and XRD analysis to determine soil mineralogy. The data was processed to analyze the type of metal fractionation. Laboratory results show that the metal content in water is below the quality standard and moves following the direction of groundwater flow. Then the distribution of metal concentrations in the soil horizontally is that the farther away from the waste slag the concentration are lower, but vertically the highest metal concentration is found at a depth of 30-60 cm. Based on the analysis conducted, it is known that the distribution of metal ions in water and soil is influenced by climatology, advection-retardation, metal fractionation, preferential flow, and reduction by plant.