1. ASSESSMENT OF TOXIC ELEMENTS CONTAMINATION IN SURFACE WATER AND SEDIMENTS IN A MINING AFFECTED AREA. Authors: ANA MOLDOVAN, ANAMARIA IULIA TÖRÖK, OANA CADAR, MARIUS ROMAN, CECILIA ROMAN, VALER MICLE.2. LEAD ISOTOPIC RATIO DETERMINATION IN CAVE SEDIMENTS USING TRIPLE-QUADRUPOLE INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY. Authors: CECILIA ROMAN, ERIKA ANDREA LEVEI, BOGDAN ANGYUS, ANA MOLDOVAN, CLAUDIU TĂNĂSELIA, ANAMARIA IULIA TÖRÖK.