Ensaio de proficiência para análise de ditiocarbamatos em polpa de banana Proficiency assay of the dithiocarbamates in banana pulp analysis

• Main Authors: Lucia Helena Pinto Bastos, Heloisa Cronemberger de Araújo Góes, Maria Helena Wohlers Morelli Cardoso, Adherlene Vieira Gouvêa, Denise de Paula Dias, Renato Rubim Ribeiro de Almeida, Armi Nóbrega, Shirley Abrantes
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Química 2007-02-01
• Series: Química Nova
• Subjects: pesticides; dithiocarbamates; interlaboratorial
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000100007
• ISSN: 0100-4042; 1678-7064

<abstract language="eng">A proficiency assay of the determination of dithiocarbamate pesticide residues in banana was carried out. Fourteen laboratories participated in this study. Homogeneity and stability testing were performed by INCQS on the samples sent to the laboratories. Analytical results supplied by the pesticide residues laboratory of the VWA/KvW, Amsterdam, Holland, were used to define the designated value for the thiram concentration in the study samples. RESULTS: Fifty percent of the participating laboratories had satisfactory results. Efforts are needed to improve the precision of the analytical results and to decrease the number of false negative results observed.