Hong-Giang Hoang, Chitsan Lin*, Huu-Tuan Tran, Chow-Feng Chiang**, Xuan-Thanh Bui, Nicholas Kiprotich Cheruiyot, Chien-Chuan Shern, Chia-Wei Lee (2020)/Heavy metal contamination trends in surface water and sediments of a river in a highly-industrialized region