SOIL POLLUTION AND HEAVY METAL CONTAMINATION: INSIGHT FROM EFFLUENT DISCHARGED FROM CHALLAWA INDUSTRIAL AREA, NIGERIA. FJS [Internet]. 2024 Dec. 16 [cited 2025 Sep. 6];8(6):355-61. Available from: https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/2749