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Artículo
Lichens as biomonitors for the determination of polycyclic aromatic hydrocarbons (PAHs) in Caracas Valley, Venezuela
(Taylor & Francis, 2011)
Biomonitoring of PAH air pollution using lichens was carried out. Sixteen PAHs were studied in 11 locations along the valley of Caracas (Venezuela). The results of this work indicate that 14 of the 16 analysed PAHs were ...
Artículo
Assessment of the sequential principal component analysis chemometric tool to identify the soluble atmospheric pollutants in rainwater
(Springer, 2011)
In this study a new method of principal component (PC) analysis, sequential PC analysis (SPCA), is proposed and assessed on real samples. The aim was to identify the atmospheric emission sources of soluble compounds in ...
Artículo
Optimisation and assessment of an innovative high sensitivity 90-degree reflecting ICP-MS ion optics system for the validation of simultaneous determination of arsenic and selenium in water matrices
(Taylor & Francis, 2011)
A routine ICP-MS method for the determination of As and Se in fresh and sewage water has been developed. After a first phase of optimisation, where the torch alignment, flow of gases and ion optic adjustments were calibrated, ...
Artículo
Liquid phase micro-extraction of linear alkylbenzene sulfonate anionic surfactants in aqueous samples
(MDPI, 2011)
Hollow fiber liquid phase micro-extraction (LPME) of linear alkylbenzene sulfonates (LAS) from aqueous samples was studied. Ion pair extraction of C10, C11, C12 and C13 homologues was facilitated with trihexylamine as ...
Artículo
Authentication of organic and conventional eggs by carotenoid profiling
(Elsevier, 2011-06-01)
Organic production benefits from fair competition and sustained consumer confidence. The latter can only be assured by paper trailing and verification assessments. Traditional analytical strategies for guaranteeing quality ...