Chitosan-crosslinked microwave-engineered biochar alleviates lead stress in Brassica napus by improving soil functioning and plant performance in Pb-contaminated soil. - Hannan F; Hu Y; Ayyaz A; Iqbal M; Yasin MU; Batool I; Li J; Islam F; Hamid Y; Farooq MA; Zhou W (Journal of environmental management, 2026)