A two years study of dioxin-like polychlorinated biphenyls (dl-PCBs) in mother's milk in Qalyubia governorate, Egypt.
Abd-elkhalik, R., Sami, A., Abd-elmootaal, M., Taha, S., moustafa, M., El-Sayed, G. (2021). A two years study of dioxin-like polychlorinated biphenyls (dl-PCBs) in mother's milk in Qalyubia governorate, Egypt.. EKB Journal Management System, 64(2), 573-579. doi: 10.21608/ejchem.2020.41413.2838
Ramy Abd-elkhalik; Ashraf Sami; Mohamed Abd-elmootaal; Sherif Taha; moustafa moustafa; Gamal El-Sayed. "A two years study of dioxin-like polychlorinated biphenyls (dl-PCBs) in mother's milk in Qalyubia governorate, Egypt.". EKB Journal Management System, 64, 2, 2021, 573-579. doi: 10.21608/ejchem.2020.41413.2838
Abd-elkhalik, R., Sami, A., Abd-elmootaal, M., Taha, S., moustafa, M., El-Sayed, G. (2021). 'A two years study of dioxin-like polychlorinated biphenyls (dl-PCBs) in mother's milk in Qalyubia governorate, Egypt.', EKB Journal Management System, 64(2), pp. 573-579. doi: 10.21608/ejchem.2020.41413.2838
Abd-elkhalik, R., Sami, A., Abd-elmootaal, M., Taha, S., moustafa, M., El-Sayed, G. A two years study of dioxin-like polychlorinated biphenyls (dl-PCBs) in mother's milk in Qalyubia governorate, Egypt.. EKB Journal Management System, 2021; 64(2): 573-579. doi: 10.21608/ejchem.2020.41413.2838

A two years study of dioxin-like polychlorinated biphenyls (dl-PCBs) in mother's milk in Qalyubia governorate, Egypt.

Egyptian Journal of Chemistry
Article 3, Volume 64, Issue 2, February 2021, Page 573-579  XML PDF (465.02 K)
Document Type: Original Article
DOI: 10.21608/ejchem.2020.41413.2838
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Authors
Ramy Abd-elkhalik1; Ashraf Sami1; Mohamed Abd-elmootaal1; Sherif Taha email orcid 1; moustafa moustafa2; Gamal El-Sayed2
1Agricultural Research Center, Central Laboratory of Residue Analysis of Pesticides and Heavy Metals in Food, Dokki, Egypt.
2Banha University, Chemistry Department, Faculty of Science, Banha, Egypt.
Abstract
The high cost of dl-PCBs analysis using a high-resolution gas chromatography/mass spectrometry (HR-GC/MS) generally 
minimizes it is regular analysis studies, especially in human tissue. In this study, a survey was carried out for analysis of dl￾PCBs in thirty human milk samples collected from Qalyubia governorate, Egypt (2016-2018). Significant correlations were observed between Ʃdl-PCBs (TEQ), age, and numbers of deliveries. All dl-PCBs congeners were detected in all collected 
samples. Besides, the non-ortho PCB congener (PCB 126) was found at elevated concentrations. The mean TEQ concentrations of non-ortho and mono-ortho PCBs in the breast milk of the primiparous mothers were 7.30 and 0.20 pgTEQg-1lipid, respectively. On the other hand, multiparous mothers have a mean TEQ concentration for these dl-PCBs (non-ortho 
and mono-ortho PCBs) of 6.1 and 0.3 pg TEQ g-1lipid, respectively. The most found dl-PCBs were PCB-118 and PCB-156, both account 64.9% from ƩPCBs concentrations without TEF. Estimation of infant daily intakes (EIDI) showed that they are at high risk of adverse effects caused by PCBs.
Keywords
Dioxins like compounds; High-Resolution Gas Chromatography/Mass Spectrometry; Breast milk; Egypt; TEF; EIDI
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