The concentration of Pb, Cd, and Sn in vegetables from ex-tin mining land in Bangka, Indonesia

Abstract

Utilization of ex-tin mining land as agricultural land is thought to have the potential to contribute heavy metals in agricultural products. The research objective was to obtain data on the metal content of Pb, Cd, and Sn in various vegetable crops such as spinach, cucumber, tomato, cayenne pepper, bitter guard, eggplant, pumpkin, and pepper. In addition to obtaining data on bioconcentration factors (BCFs) of metals in various vegetables. Vegetables were obtained from ex-mining vegetable fields in Jelitik Village, Gunung Pelawan, and Rebo Village, and metal measurements used Analytical Flame Atomic Absorption Spectrophotometry (F-AAS) Jena ContrAA 300. The results showed that the Sn metal in all vegetables analyzed ranged from 4.71-10.86 mg/kg, Pb ranged from 0-5.0 mg/kg, and Cd metal was not found in all the vegetables and soil samples analyzed. The highest of Sn was found in spinach, and Pb in pepper. Generally, the Pb, Cd, and Sn content in vegetables still meets the Indonesian National Standard (SNI) No. 7387:2009, because not exceed the recommended quality standards. Soil from the three villages of ex-tin mining is not categorized as polluted with Pb, Cd, and Sn metals because it does not exceed the target values recommended by WHO. The TFs (Transfer Factors) value of metals in all types of vegetables analyzed was < 1, meaning that the ex-tin mining lands in Jelilik Village, Gunung Pelawan, and Rebo Village, Bangka are still relatively safe for growing vegetables because they do not contribute to the pollution of Pb, Cd, Sn.