Related Experiment Video
Updated: Jun 27, 2026

Laboratory Estimation of Net Trophic Transfer Efficiencies of PCB Congeners to Lake Trout (Salvelinus namaycush) from Its Prey
Published on: August 29, 2014
[Levels of polychlorinated biphenyls in human milk in dependent on selected factors]
Renata Pietrzak-Fiećko1, Stefan S Smoczyński, Zbigniew Borejszo
1Katedra Fizyki i Biofizyki, Uniwersytet Warmińsko-Mazurski w Olsztynie, 10-719 Olsztyn, ul. Oczapowskiego 4.
The contents of polychlorinated biphenyls in human milk were determined. The PCB levels in human milk were determined in relation to factors such as: age and weight of women, birthweight of the baby, smoking, period of breast-feeding (3-5 days, 2-4 weeks, 6-8 month) and seasons of the year. It was found that level of PCB in human milk have been decreasing during lactation. PCB levels in human milk decreases with increasing weight of women. The level of PCB in human milk increases together with age of women. The higher PCB levels were determined in human milk from women smoking cigarettes.
The contents of polychlorinated biphenyls in human milk were determined. The PCB levels in human milk were determined in relation to factors such as: age and weight of women, birthweight of the baby, smoking, period of breast-feeding (3-5 days, 2-4 weeks, 6-8 month) and seasons of the year. It was found that level of PCB in human milk have been decreasing during lactation. PCB levels in human milk decreases with increasing weight of women. The level of PCB in human milk increases together with age of women. The higher PCB levels were determined in human milk from women smoking cigarettes.
Related Concept Videos
Pharmacokinetics in Pediatric Patients: Drug Metabolism
Development of Human Microbiota
Pharmacokinetics in Pediatric Patients: Drug Distribution
Types of Toxins
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...

