Metal Contents and Pb Isotopes in the Surface Seawater of the Gulf of Prigi, Indonesia: Detection of Anthropogenic and Natural Sources

Abstract

In order to investigate the anthropogenic and natural sources of metals in the Gulf of Prigi, Indonesia, it was analyzed their metal contents and Pb isotopes of surface seawater together with sediment, grouper fish, mosh, seaweed, soil, and sharp grass for protecting the environmental pollution of the study area. Samples were leached using a microwave digestion technique. Metal (Ca, Fe, Mn, Cu and Pb) concentrations and 206 Pb, 207 Pb and 208 Pb in the leached solutions were analyzed using inductively coupled plasma-mass spectrometry (ICP-MS). The level concentrations of Ca (491436 μg kg-1), Fe (12123 μg kg-1), Mn (37.2 μg kg-1), Cu (84.0 μg kg-1) and Pb (34.5 μg kg-1) in the surface seawater were low compared with those of background seawater levels issued by World Health Organization (WHO). The range of Pb isotope ratios (207 Pb / 206 Pb = 0.7966-0.9945 and 208 Pb / 206 Pb = 2.2600-2.8243) in surface seawater was higher in the plotted Pb growth curve suggesting unpolluted Pb reflected by natural sources such as mineral sources or lithogenic from marine sediment.

Application of Silica from Beach Sand in the Synthesis of Calcium-Alginate-Silica as Adsorbent of Na+ and Cl- Ions

“…The adsorption process could be carried out using a membrane based on the natural materials, such as coral skeletons and beach sand obtained from Prigi Beach. Wijaya, et al (2020) reported that the anthropogenic activities that occur around the waters of Prigi Bay result in many inactive corals on the coast [4]. These inactive corals become coral skeleton waste known as coral skeletons [5]- [7], as well as analytical methods to identify heavy metal isotope ratios [8], [9].…”

Zoning System in Biodiversity Conservation and Marine Ecological Sustainability: An Emic Perspective of the Bajo People in Southeast Sulawesi

“…Meanwhile, from an ecological aspect, the exploitation of marine resources by modern fishers has had an impact on the destruction of marine and coastal ecosystems (Ahmed & Thompson, 2019). This occurs due to unlimited fishing activities with dangerous tools and materials; marine pollution by ship waste and oil spills; and industrialization in coastal areas causing large amounts of waste to enter the sea, such as cases of pollution in Jakarta bay (Azizi et al, 2021;Kunzmann et al, 2018), Malacca Strait (Robertua et al, 2019), metal pollution and Pb isotopes in seawater at the surface of Prigi Bay (Wijaya et al, 2019), pollution of plastic waste in the Coastal Water of Makassar City (Afdal et al, 2019), and various water pollution around other coastal cities (Sui et al, 2020). The exploitation of marine resources also negatively impacts the physical degradation of coastal ecosystems, such as damage to mangrove ecosystems, coral reefs, and coastal abrasion.…”