Search results for "COLUMN"
showing 10 items of 1301 documents
Fútbol, violencia y dinero / y 3
2006
El comercio de seres humanos
2001
OMC ¿Necesaria / Imposible?
2005
La chirigota política
2006
Autocrítica de un amor
2008
La perversión de los ideales: Italia
2008
Derecho de información, interés general y “hooligans”
1997
Los excluidos, ciudadanos
1998
Metallic nanoparticle enrichment at low temperature, shallow CO2 seeps in Southern Italy
2012
We report on metal enrichment along a natural pH gradient owing to increased CO2 degassing at cold, shallow seeps of Vulcano Island in the Mediterranean Sea, off Sicily. We assessed composition of unfiltered and filtered seawater (<100 nm) along acidic zones ranging between ambient and pH 5, and showed that most seep derived elements are present as nanoclusters which then aggregate into larger colloids while mixing with ambient seawater along a pH gradient. Size and elemental composition of such naturally occurring nanoparticles assessed by modern characterisation methods were in good agreement with the results from conventional analytical methods. We provide analytical evidence for the pre…