NKOSI, S. M.; MSIMANGO, N. M. . Screening of zinc, copper and iron in lettuce and Chinese cabbage cultivated in Durban, South Africa, towards human health risk assessment. South African Journal of Science, [S. l.], v. 118, n. 11-12, 2022. DOI: 10.17159/sajs.2022/12099. Disponível em: https://www.ajol.info/index.php/sajsci/article/view/238138. Acesso em: 28 aug. 2026.