“Konsentrasi dan Distribusi Spasial Arsenik (As) Pada Air Sungai Batang Ombilin, Sawahlunto, Sumatra Barat” (2026) Jurnal Serambi Engineering, 11(3). Available at: http://jse.serambimekkah.id/index.php/jse/article/view/1843 (Accessed: 2 July 2026).