Autoclave decomposition method for metals in soils and sediments.

Autor: Navarrete-López M; Escuela Nacional de Ciencias Biológicas, Laboratorio Central de Instrumentación, Instituto Politécnico Nacional (IPN), Prol. de Manuel M Carpio y Plan de Ayala, Col. Sto. Tomas, Del. Miguel Hidalgo, C.P.11340, Mexico, DF, México. mnavarretel@hotmail.com, Jonathan MP, Rodríguez-Espinosa PF, Salgado-Galeana JA
Jazyk: angličtina
Zdroj: Environmental monitoring and assessment [Environ Monit Assess] 2012 Apr; Vol. 184 (4), pp. 2285-93. Date of Electronic Publication: 2011 May 17.
DOI: 10.1007/s10661-011-2117-4
Abstrakt: Leaching of partially leached metals (Fe, Mn, Cd, Co, Cu, Ni, Pb, and Zn) was done using autoclave technique which was modified based on EPA 3051A digestion technique. The autoclave method was developed as an alternative to the regular digestion procedure passed the safety norms for partial extraction of metals in polytetrafluoroethylene (PFA vessel) with a low constant temperature (119.5° ± 1.5°C) and the recovery of elements were also precise. The autoclave method was also validated using two Standard Reference Materials (SRMs: Loam Soil B and Loam Soil D) and the recoveries were equally superior to the traditionally established digestion methods. Application of the autoclave was samples from different natural environments (beach, mangrove, river, and city soil) to reproduce the recovery of elements during subsequent analysis.
Databáze: MEDLINE