Studies on the representativeness of sampling large lots of dried herbs and dried spices for their pyrrolizidine alkaloid content and results of the subsequent homogenisation of the laboratory sample. - These A; Klier B; Moennig A; Schuett F; Elflein L; Gabriel F; Mank H; Goldbeck C; Graffelmann L; Himmel J; Einig M; Keuth O; et al. (Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment, 2026)