TY - RPRT TI - Cleanup of environmental sample extracts using Florisil solid-phase extraction cartridges. AU - V Lopez-Avila AU - J Milanes AU - N S Dodhiwala AU - W F Beckert PY - 1989 DO - 10.1093/chromsci/27.5.209 UR - https://pubmed.ncbi.nlm.nih.gov/2745661/ ID - 2745661 ER -