Analysis of Lead (Pb) Value Comparison on Seaweed (Eucheuma cottonii) in Bluto and Saronggi Sumenep Marine, Madura, East Java

Metals and minerals are found in both freshwater and sea water. The inclusion of heavy metals, such as lead (Pb) and other heavy metals, in marine waters with excessive concentration can have a toxic effect on marine organisms, both animals and plants. Heavy metal such as lead (Pb) is a dangerous type of metal; if excessive concentration is found in seaweed it can lead to a decrease in the rate of growth. The purpose of this research is to prove the difference in lead levels accumulated in Eucheuma cottonii seaweed and compare the lead levels in seaweed Eucheuma cottonii with the provisions of Indonesian National Standard (SNI) in the Bluto and Saronggi Sumenep Marine, Madura. This research uses descriptive method and Mann Whitney U test. The results showed that lead level in seaweed in Bluto and Saronggi Sumenep Marine showed different results (p <0.05). Lead level in seaweed in Bluto marine has an average of 0.018ppm and 0.023ppm and in Saronggi is equal to 0..256ppm and 0..0276ppm. The average content of lead accumulated in seaweed and seawater in both waters is still below the threshold value according to SNI 01-7387-2009 of 0.5mg/kg. However, the lead level in the sediments in both Bluto and Saronggi marine has exceeded the pre-determined lead limit level of 0.675ppm.