Assessment of Pollution Status of Sediments in Teluk Awur Beach, Jepara Regency, Indonesia

Prastyo Abi Widyananto, Stefanie Jessica Henny Larasati

Abstract


Teluk Awur Beach, Jepara Regency, Indonesia, a strategic coastal zone experiencing high-intensity coastal activisty such as aquaculture and tourism activities. This study aim to evaluated the contamination status and potential sources of cobalt (Co) and aluminum (Al) in the surface sediments along the Teluk Awur Beach. Surface sediment samples were collected from three purposive stations (TA1, TA2, and TA3) characterizing the dynamic, semi-enclosed bay morphology. Trace metal concentrations were quantified using Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) following acid wet digestion. The analysis revealed a distinct polarization between the elements; Co concentrations systematically decreased from West to East, peaking at station TA1 (1.6443 mg/L), whereas Al displayed an opposite trend, reaching its maximum at station TA3 (6.4584 mg/L). The contamination factors (CF) verified that the entire area falls under a low contamination status (CF < 1). Nevertheless, a distinct anthropogenic footprint was identified at station TA1, where CF Co (0.087) was threefold higher than at TA3 (0.029), driven by proximity to western jetty activity and adjacent landward aquaculture networks. Longshore currents and bay dynamics effectively disperse  of Al concentration to eastward, allowing natural lithogenic sedimentation to dominate the coastal geofacies at TA3.


Keywords


Aluminum, Cobalt, Contamination Factor, Coastal Sediment, Teluk Awur.

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DOI: http://dx.doi.org/10.52155/ijpsat.v57.2.8344

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