Water Quality of Haruku Strait Central Maluku Indonesia

Abstract

The waters of the Haruku Strait are one of the waters in Maluku Province highly used, both on the coast and in the sea. This allows waste ingress into the waters, this results in pollution which causes declining water quality. An indicator of declining aquatic environment quality is the presence of dissolved oxygen. Oxygen solubility in the waters is also influenced by the character of the water mass. The purpose of this study was to examine the water quality of the Haruku Strait, especially the DO, BOD and pH, turbidity and brightness. The research was carried out in July-September 2021. The method used was in situ measurement of parameter values by taking water samples using Niskin bottles. Furthermore, the concentrations of pH, DO and BOD were measured using a DO and BOD meter Instrument (Hanna Instrument) and a pH meter. The data were then analyzed with the help of Surfer 12 software and Microsoft Excel, the results were displayed in the form of a horizontal distribution map and a vertical distribution graph. The results showed that the concentration of dissolved oxygen (DO) in the waters of the Haruku Strait ranged from 5.76-8.82 mg/L, while the BOD ranged from 5.22-10.43 mg/L and the pH value was 7.0-8.5, brightness 5.5-13.5 m, and turbidity 0.35-1.75 FTU. The waters quality is classified as good and the health of the waters of the Haruku Strait based on the parameters of pH, DO and BOD can be categorized as clean when referred to the quality standards for ports, marine tourism and marine life.