Bioaccumulation of Lead (Pb) in Green Mussels ( Perna Viridis ) in Indonesian Waters

Mercury (Hg) heavy metal pollution is one of the serious problems that can threaten human health and ecosystems. In an effort to reduce mercury contamination, this research uses sea pandanus leaves (pandanus tectorius) as a natural biosorbent. The purpose of this study is to determine the contact time and adsorbing concentration capacity of sea pandanus leaves to mercury ions. One of the steps to reduce mercury contamination is by biosorption. The data obtained were analyzed using J.S.A.P software to determine the real difference test on contact time and adsorption concentration. The results of this study indicate that sea pandanus has a mercury adsorption capacity determined by the optimum contact time in the ratio of 1:100, the best optimum contact time is 60 minutes with an adsorption concentration of 100 ppm by achieving an adsorption of 0.372 mg/g using a mesh size of 120, Comparison of 1:75, the best optimum contact time is 30 minutes with an adsorption concentration of 0.907 mg/g using a mesh size of 120. Sea pandan leaves are proven as a potential biosorbent to remove mercury ions with the application of sea pandan leaves with seawater, which is 95% able to absorb heavy metals in polluted seawater.

Efficiency of Sea Pandan Leaves (Pandanus tectorius) in the Biosorption of Mercury (Hg) in Coastal Areas

Fitri,

Yulita,

Pardi

et al. 2024

Analysis Of Hazardous Heavy Metal Content in Maritime Ecosystems

Fitriani,

Pardi,

Jordan

2024

Maritime ecosystems, rich in diverse biota and natural resources, are an essential element in maintaining global ecological balance. However, the sustainability of these ecosystems is threatened by harmful heavy metal contamination, which can jeopardize the health of maritime ecosystems and the well-being of humans who rely heavily on marine resources. This study aims to identify heavy metal content in the maritime environment. Using a literature review method on data from 2019 to 2023, it was analyzed and corroborated with journal articles. The results highlighted nine hazardous heavy metals, such as copper, lead, cadmium, zinc, chromium, nickel, iron, manganese and mercury, which are capable of contaminating seawater and causing toxic effects on marine organisms. Therefore, serious efforts are needed to reduce and manage heavy metal contamination in the maritime environment to maintain ecosystem sustainability and protect the well-being of humans who depend on marine resources

Sensitive and Simple Electroanalytical Method for Lead Detection in Seawater Using VAdS with Eriochrome Blue Black R

Pardi,

Willian,

Fitriyah

et al. 2024

A novel electroanalytical approach for lead detection was developed using the voltammetric adsorptive stripping (VAdS) method with Eriochrome Blue Black R (EBBR) as the complexing agent. The method operates by accumulating the Lead-EBBR complex on a hanging mercury drop electrode (HMDE) and measuring the peak current. The complex reduces at -0.46 V, with the peak current increasing as small amounts of EBBR are introduced into the sample. Key parameters such as pH, EBBR concentration, accumulation time (tacc), and accumulation potential (Eacc) were optimized. Under optimal conditions (pH 3, 0.6 mol/L EBBR, tacc 60 s, Eacc 0.35 V, and 40 mmol buffer), the peak current correlated directly with Lead (II) concentrations from 0.05 to 100 µg/L, with a detection limit of 0.01 µg/L. The method exhibited high precision, with a relative standard deviation of 0.5% for a 10 µg/L Lead (II) solution over ten trials. Validation of the method was achieved by comparing results from seawater samples from former bauxite mining areas, using Atomic Absorption Spectrophotometry (AAS), showing similar outcomes. The VAdS method proved highly effective for detecting Lead (II) in seawater contaminated by mining waste.