TY - RPRT TI - Lead ultra-trace on-line preconcentration and determination using selective solid phase extraction and electrothermal atomic absorption spectrometry: applications in seawaters and biological samples. AU - E Vereda Alonso AU - M T Siles Cordero AU - A García de Torres AU - J M Cano Pavón PY - 2006 DO - 10.1007/s00216-006-0572-5 UR - https://pubmed.ncbi.nlm.nih.gov/16823565/ ID - 16823565 ER -