4Guillermo G R, Cecilio V L, Guadalupe L A. Environmental condition and pesticide pollution of two coastal ecosystems in the gulf of Califomia, Mexico. Ecotoxicogy and Environmental Safety, 1999, 44:280-286.
5Viana E, Redondo M J, Font G. Disks versus coltwnn in the solid-phase extraction of pesticides from water. J Chromatography A, 1996, 733(1-2) : 267-274.
6Behran J, Lopez F J, Cepria O. Solid-phase microextraction for quantitative analysis of organophosphrous pesticides in environmental water samples. J Chromatography A, 1998,808(1/2) : 257-263.
7Choudhury T K, Gerhardt K O, Mawhinney T P. Solid-phase microextraction of mitrogen-and phosphorous-containing pesticides from water and gas chromatographic analysis.Environ Sci Technol, 1996, 30(11) : 3 259-3 265.
