Assessment of heavy metal concentration in ipomoea batatas and spinach consumed in Zanzibar by Energy Dispersive X-ray Fluorescence (EDXRF). Brazilian Journal of Radiation Sciences, Rio de Janeiro, Brazil, v. 9, n. 2, 2021. DOI: 10.15392/bjrs.v9i2.1656. Disponível em: https://bjrs.org.br/revista/index.php/REVISTA/article/view/1656.. Acesso em: 30 apr. 2024.