Abstract
<p>Biomonitoring is the use of organisms to monitor and assess/detect the condition of an environment. Ngimboh Coast is a coastal line in Ujungpangkah Subdistrict, East Java (Indonesia) which functions as a vessel berth, TPI, and shipyard industry which has the potential to dispose of waste containing Pb<sup>2+</sup> and Cr<sup>6+</sup> which affect the physical condition of chemicals and organisms in these waters. This study aims to determine the Biofilm can be a biomonitoring agent in heavy metals Pb<sup>2+</sup> and Cr<sup>6+</sup> and to know the physical chemical conditions in the Ngimboh coast, Ujungpangkah District, Gresik. This study uses a survey method. Biofilm, sediment and water sampling was carried out at 3 sampling points, namely the first sampling point area close to the disposal of shipyard industrial waste, the second sampling point was an empty land area, and sampling point three was the estuary area. The parameters were measured such as physical properties (temperature, current speed, water depth), chemical properties (pH, DO, salinity), metal content of Pb<sup>2+</sup> and Cr<sup>6+</sup> on biofilms, sediments and water.</p>
Highlights
Sea is one component of the environment that has an important function for human life, including to designate environmental balance
One pollutant which is the main cause of marine pollution is waste that produces heavy metals (Budiastuti et al, 2016)
Sediment and water samples were taken from 3 sampling points
Summary
Sea is one component of the environment that has an important function for human life, including to designate environmental balance. As a result of various things both directly and indirectly it will have an impact on environmental damage including sea air pollution. According to Sastrawijaya (2000), environmental pollution is an unfavorable environmental change, partly because of human actions, due to changes in the patterns of energy and material use, levels of radiation, physical and chemical materials, and the number of organisms. On average one person per day produces 1-2 kg of waste, and will continue to increase in line with the increasing welfare and lifestyle of the community
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