Study of Heavy Metals in Cashew And Soursop Leaves on Bangka Island
The largest tin producer in Indonesia is Bangka Island which is managed by PT. TimahTbk and also by the community. One of the problems in the ex-mining area on Bangka Island is the large amount of tailings waste which still contains heavy metals. The purpose of this study was to analyze the heavy metals Sn, Cu, Cd, Pb, and Hg in Cashew and Soursop leaves planted in the reclamation area of the former tin mine in Belilik Village, Namang District, Bangka Tengah Regency, and Bangka Belitung. The research included taking samples of Cashew and Soursop leaves, then digesting them for further analysis of their heavy metal content using Atomic Absorption Spectroscopy (AAS). Heavy metal content of Pb (20,7598 mg / kg), Hg (2,3712 mg / kg), Sn (615,1274 mg / kg) in Cashew leaf samples and levels of heavy metal Hg (0,2507mg / kg), Sn (443.1026 mg / kg) in the Soursop leaf sample has levels above the Maximum Limit of Heavy Metal Contamination in Vegetables and Fruits according to SNI 7387: 2009, BPOM Regulation No. 5 of 2018, so it is not suitable for consumption because it is dangerous to health.