Vertical and horizontal distribution model of lead (Pb) in Padelegan Waters, Pademawu District, Pamekasan Regency

Abstract

Seawater quality is importantly used in salt production, but it could be contaminated due to input of anthropogenic wastewater. This study aims to understand the quality of the water and the content of Pb in seawater, which will be used as raw material for salt production. Descriptive research methods and purposive sampling methods were used for the research method and the determination of the sampling respectively. Sampling of seawater was carried out water sampler, followed by analysis of heavy metal Pb based on APHA 1998 using Atomic Absorption Spectrophotometry (AAS). The concentration of Pb on the surface ranged from 0.6332 to 1.0815 mg/L, in the water column from 0.5842 to 1.0516 mg/L, and in the bottom waters from 0.5571 to 0.9375 mg/L, according to the findings. The horizontal distribution of the Pb showed an increasing trend towards the sea with concentrations ranging from 0.6332 to 1.0815 mg/L. Meanwhile, the concentrations of Pb in surface waters increased vertically, ranging from 0.5571 to 1.0815 mg/L. The horizontal distribution is higher towards open sea, while vertical distribution is higher towards the water surface. Seawater in vicinity of study area is still probably used although caution must be observed regarding to the Pb content.