TY - RPRT TI - A simple and rapid in situ preconcentration method using solid-phase extraction for the determination of dissolved manganese in brackish lake water samples. AU - Minoru Okumura AU - Takahiro Anate AU - Kaoru Fujinaga AU - Yasushi Seike PY - 2002 DO - 10.2116/analsci.18.1093 UR - https://pubmed.ncbi.nlm.nih.gov/12400653/ ID - 12400653 ER -