Routine determination of organochlorine pesticides and polychlorinated biphenyls in human milk using capillary gas chromatography-mass spectrometry

Abstract

The analysis of human milk for residues of polychlorinated biphenyls and organochlorine pesticides is a laborious and expensive procedure. This paper describes an approach to this analysis which is significantly less labour-intensive and more cost effective than traditional methods. These advantages were achieved by the adsorption of the milk on to a polar substrate prior to Soxhlet extraction, using a polymeric HPLC column for the clean-up of the extract followed by a highly selective capillary GC -MS analysis for the determination of the residues.

Das Delir — Verwirrung mit schweren Komplikationen

“…Zur symptomorientierten Therapie des Delirs können die folgenden Substanzen empfohlen werden 326,323,352 . In der Schwangerschaft kann als Mittel der ersten Wahl unter den Stufe-I Analgetika Paracetamol gegeben werden 429,430,431,432,433,434 . neonatologischen Beurteilungsscores sind für akute, prozedurale Schmerzen validiert und publiziert 640,641 .…”

Spectrofluorimetric determination of 4-chlorobiphenyl and Arochlor 1221 using the fluorescence quenching produced by cetylpyridinium bromide micellar medium

“…The techniques which have been most often applied in determining PCBs are gas chromatography [2][3][4], high performance liquid chromatography [5,6] and mass spectrometry [7][8][9]. As to the use of luminescence spectrometry, Femia et al [10] have reported the fluorescent characteristics of several polychlorinated biphenyls and Correspondence to: J.J. Santana Rodrı´guez other authors have studied several PCBs and Arochlors by low temperature phosphorimetry [11] and solid surface room temperature phosphorimetry [12][13][14].…”