| dc.description.abstract | The Mahakam River is the largest river that divides the province of East Kalimantan, where its flow circles
the areas of Kutai Kartanegara Regency, Kutai Barat Regency and Samarinda City. Community activities such
as household activities, plantations, fishery cultivation and mining are daily activities along the river. The
existence of Gagok fish (Mystus wolffii) which is easily found by the community as a result of their daily catch
in the Mahakam had been made an object used as an indicator organism of heavy metal pollution due to
activities along the river. This research was conducted for 6 months, at 5 stations based on where the Gagok
fish (Mystus wolffii) was caught by analyzing the heavy metal content in the gills, kidneys and meat of Gagok
fish (Mystus wolffii) and related to the influence of water quality using atomic absorption analysis (AAS) and
Chi-square test. The conclusion showed that the heavy metal content found in the kidneys was dominated by
Cu with a value ranging from 0.33 mg / kg - 0.76 mg / kg, in the gills was dominated by Pb, with a value
ranging from 0.34 mg / kg - 0.90 mg / kg, and in the meat the Pb and Cu values were not dominant, while Hg
was not found in all parts. However, after being compared with the metal quality standard in organisms (SK
Dirjen POM no 072/B/SK/VII/89) it is below the maximum contamination limit. | en_US |
