Leaching and characterization studies of heavy metals in contaminated soil using sequenced reagents of oxalic acid, citric acid, and a copolymer of maleic and acrylic acid instead of ethylenediaminetetraacetic acid - Eric Tindanzor; Zhaohui Guo; Tianshuang Li; Rui Xu; Xiyuan Xiao; Chi Peng (Environmental Science and Pollution Research, 2023)