Optimization  

of  

a  

sampling  

method  

to  

determine  

polycyclic  

aromatic  

hydrocarbons  

in  

smoke  

for  

incomplete  

biomass

combustion

Francisco J. Conde, Juan H. Ayala, Ana M. Afonso, Venerando González

Analytica Chimica Acta , 524 (2004) 287-294

Non-ionic  

surfactant  

mixtures:  

a  

new  

cloud-point  

extraction  

approach  

for  

the  

determination  

of  

PAHs  

in  

seawater  

using

HPLC with fluorimetric detection

Bárbara Delgado, Verónica Pino, Juan H. Ayala, Venerando González, Ana M. Afonso

Analytica Chimica Acta , 518(1-2) (2004) 165-172

Solid-phase  

microextraction  

coupled  

to  

gas  

chromatography-mass  

spectrometry  

for  

determining  

micelle-PAHs  

partition

coefficients

Verónica Pino, Juan H. Ayala, Venerando González, Ana M. Afonso

Analytical Chemistry , 76(15) (2004) 4572-4578

Solid-phase microextraction coupled with HPLC for the analysis of heterocyclic aromatic amines

Lourdes Cárdenes, Juan H. Ayala, Ana M. Afonso, Venerando González

Journal of Chromatography A , 1030 (2004) 87-93