Abstract
Biomonitoring is the use of a particular species that can provide information related to environmental pollution status by certain heavy metals. Wulan River is the largest river in Demak Regency. The development of population activity along the Wulan River can affect the water quality, because the waste generated from the activities of the population is discharged directly into the river. This study aims to determine the content of lead metal (Pb) in water and meat fish Baung (Hemibagrus nemurus) in the waters of the Wulan River. The research method used survey method with purposive sampling. Water and fish samples were collected at 3 stations, Kedungwaru Lor, Pasir, and Berahan Wetan village. Analysis of Pb content using Atomic Absorption Spectrophotometry (AAS) method. The result of the test of lead metal content (Pb) was 0,3189-0,7320 ppm, and the water quality standard of PPRI N0.82 of 2001 class II that is for lead metal is 0,03 ppm. The lead metal content in Baung fish was 2,449-3,920 ppm. Furthermore, it was concluded that Wulan River Demak Regency has medium pollution status.
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