Trace analysis of 28 antibiotics in plant tissues (root, stem, leaf and seed) by optimized QuEChERS pretreatment with UHPLC-MS/MS detection

•A robust and reliable analytical method was developed for 28 antibiotics determination in different plant tissues.•The developed method was successfully applied to analysis of antibiotics in different tissues of wetland plants.•Wetland plants are selective for the absorption and transportation of certain antibiotics.•Antibiotics mainly accumulate in the roots of wetland plants rather than in the aboveground tissues.