PMID- 9818413 OWN - NLM STAT- MEDLINE DCOM- 19981203 LR - 20231213 IS - 0021-9673 (Print) IS - 0021-9673 (Linking) VI - 823 IP - 1-2 DP - 1998 Oct 9 TI - Determination of polychlorinated biphenyls in soybean infant formulas by gas chromatography. PG - 365-72 AB - A method previously developed for the analysis of organohalogenated compounds in dairy products is now validated for polychlorinated biphenyls (PCBs) determination in soybean infant formulas. The results of this study are consistent with those found for PCBs in powdered full-fat milk. The methodology is based on a solid-liquid extraction step enabling a semi-selective extraction of the apolar lipids of the matrix without affecting the efficiency for the recovery of PCBs. Mean recoveries for the spiked coplanar congeners studied were in the 88-114% range, with relative standard deviations (R.S.D.s) lower than 9.8%. The R.S.D.s related to the determination of endogenous PCBs were in the 1.5-10.0% range. The validated methodology was applied to the PCB analysis in different trademarks of soybean infant formulas commercialised in Spain. Toxic tetraequivalents of tetrachlorodibenzo-p-dioxin and daily intake corresponding to each one were calculated and compared with values previously published and with those found in literature for human breast milk in different countries. FAU - Ramos, L AU - Ramos L AD - Centro de Tecnologia de los Alimentos y Servicios Biosanitarios, Universidad de Alcala, Alcala de Henares, Madrid, Spain. FAU - Torre, M AU - Torre M FAU - Laborda, F AU - Laborda F FAU - Marina, M L AU - Marina ML LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - J Chromatogr A JT - Journal of chromatography. A JID - 9318488 RN - 0 (Environmental Pollutants) RN - DFC2HB4I0K (Polychlorinated Biphenyls) SB - IM MH - Chromatography, Gas/*methods MH - Environmental Pollutants/*analysis MH - Humans MH - Infant MH - Infant Food/*analysis MH - Polychlorinated Biphenyls/*analysis/toxicity MH - *Glycine max EDAT- 1998/11/18 00:00 MHDA- 1998/11/18 00:01 CRDT- 1998/11/18 00:00 PHST- 1998/11/18 00:00 [pubmed] PHST- 1998/11/18 00:01 [medline] PHST- 1998/11/18 00:00 [entrez] AID - S0021-9673(98)00514-7 [pii] AID - 10.1016/s0021-9673(98)00514-7 [doi] PST - ppublish SO - J Chromatogr A. 1998 Oct 9;823(1-2):365-72. doi: 10.1016/s0021-9673(98)00514-7.