Abstract This study was carried out in order to determine the concentrations of some heavy metals namely; lead, cadmium, nickel and zinc in selected vegetables. Cucumber (Cucumis sativus), watermelon (Cucurbita lanatus), tomato (Solanum lycopersicum) and pepper (Capsicum annuum), brought from Kano state as well as those cultivated in Edo state, Nigeria. A total of 25 […]