TY - RPRT TI - Parallel column ion exchange for post-separation pH modification in liquid chromatography. Application to barbiturates and miniaturization. AU - H Jansen AU - C J Vermunt AU - U A Brinkman AU - R W Frei PY - 1986 DO - 10.1016/s0021-9673(01)93461-2 UR - https://pubmed.ncbi.nlm.nih.gov/3782317/ ID - 3782317 ER -