| dc.description.abstract | Heavy metal pollution in Belawan waters occurs due to human settlements,
industrial activities, tourism, the use of antifouling paint used to coat ship hulls and
anthropogenic activities. Lead pollution in these waters has the potential to disrupt
the balance of the marine ecosystem, especially organisms that live in the sea, one
of which is shellfish. This study aims to analyze the content of heavy metal lead (Pb)
in blood clams (Anadara granosa) in Belawan waters, Bagan Deli Village. The type
of research is descriptive survey research. The location of the study was carried out
in Bagan Deli Village with a population of 4,904 families. The sample was
determined as many as 98 people using the Slovin formula and the sampling
technique through random sampling techniques. Data collection used
questionnaires and laboratory tests. The results of the study showed that the
majority of the population was aged 51-60 years (26,5%), with female gender
89,8%, high school education 39,8%, working as housewives 62,2%, length of
residence 21-30 years (29,6%), body weight 61-70 kg (35,7%). The results of
laboratory tests showed that the Pb content in Belawan waters in Bagan Deli
Village, namely at point 1 of 0,028 mg/L and point 2 of 0,042 mg/L had exceeded
the quality standard limit according to Government Regulation No. 22 of 2021,
while the Pb content in blood cockles in the three samples had the same result of
0,059 mg/L which had not exceeded the quality standard limit according to the
Indonesian National Standard-7387-2009. The results of the study showed that the
frequency of blood cockle consumption was once a week in 68,4% and the amount
of blood cockle consumption was 50 grams (39,8%). The calculation results show
a minimum intake of 0,00001 mg/kg/week, a maximum intake of 0,00023
mg/kg/week, and an average intake of 0,000072 mg/kg/week. The public is advised
to remain vigilant in consuming blood cockles and to maintain cleanliness,
especially around residential areas, to reduce water pollution in the waters of
Bagan Deli Village. | en_US |
