3 documents found, page 1 of 1
Study of Inorganic Profiles of Street Cocaine Samples Using ICP-MS and ICP OES
Amorim,Zanata B.; Machado,Maiara P.; Moro,Mariana K.; Rebouças,Laura O.; Dalfior,Bruna M.; Romão,Wanderson; Filgueiras,Paulo RobertoDetermining inorganic constituents in illicit drugs can indicate its purity and presence of adulterants. In this study, we analyzed 52 street cocaine samples, seized in three different regions of Espírito Santo, state of Brazil. Inductively coupled plasma optical emission spectrometry was used to determine Al, Ca, Cu, Fe, Mn, Mg, Zn concentrations and inductively coupled plasma mass spectrometry to determine Mo...
Arsenic and Other Elements Determination in Seawater Using Coprecipitation and ...
Conceição,Vitor N. da; Campos,Taynara G.; Dalfior,Bruna M.; Heringer,Otávio A.; Brandão,Geisamanda P.; Carneiro,Maria Tereza W. D.The present work aims the determination of As, Co, Cr, Cu, Mn and Pb in seawater samples using coprecipitation extraction procedure before standard mode inductively coupled plasma mass spectrometry (ICP-MS) (no collision/reaction cell). The coprecipitation procedure is based on the precipitation of Mg(OH)2 from the reaction of the Mg2+ ions (present into the seawater) with ammonia added to the sample. Central c...
AVALIAÇÃO DOS TEORES DE Pb, Cd, Sn, Co, Hg, Mo E As EM SOLOS DA PENÍNSULA FILDE...
Dalfior,Bruna M.; Roriz,Larissa D.; F. Júnior,Reginaldo; Freitas,Antônio Carlos de; Silva,Heitor E. da; Carneiro,Maria Tereza W.D.Antarctic Continent is one of the few places that has not been explored at all, but studies show that this place is suffering interference by human activities. Therefore, monitoring of this region becomes very important. After optimization and verification of the methodology, the concentrations of Pb, Cd, Sn, Co, Hg, Mo and As in soil samples collected in the Fildes Peninsula, King George Island, Antarctica, we...