Effect of Sea Surface Temperature on The Metal Zn Contents in Inshore and Offshore Water of Blanakan Coast, West Java, Indonesia Noverita Dian Takarina*
Department of Biology, Faculty of Mathematics and Natural Science, University of Indonesia, Depok
Abstract
The Sea Surface Temperature (SST) is known as one of prominent factors affecting the concentration of metals in the marine environment. Hence, this research is aiming to study the effect of SST on Zn content distribution in the seawater of Blanakan coast. The Zn was measured from sampled seawater collected from 7 stations. Those stations were representing inshore and offshore of Blanakan coast. The sampled water then analyzed by AAS to obtain the Zn contents. The result confirms a positive effect of SST on Zn contents (r2 = 0.18). An increase of SST from 25 to 31 0C was followed by increase of Zn in seawater from 0.31 to 0.50 mg/l of water. Respectively, all Zn values in Blanakan coast have exceeded the permissible limit of EPA (0.09 mg/l for seawater). The effect of SST on the Zn contents is observed in the offshore rather than inshore water of Blanakan coast. This research also presents a 12 month Zn prediction. Following the SST fluctuation, it is predicted that Zn in seawater will be higher in February-May and lower in July-September.
