Monday 20 September 2021

 

Sekcija za hemiju životne sredine Srpskog hemijskog društva organizuje

PREDAVANJE

SOURCES, CYCLING AND FATE OF COMPOUNDS OF EMERGING CONCERN
Bisphenols as a case study

Dr Ester Heath, Jožef Štefan Institute, Ljubljana, Slovenia

15. decembar 2017. u 11.00 h, Hemijski fakultet, Studentski trg 12, Beograd, Biblioteka na 1. spratu


Abstract

Bisphenol A (BPA) is used in production of certain plastics and epoxy resins. Is a xenoestrogen what raises concern about its suitability for food packaging application, especially to sensitive pollutions like infants and newborns. This has led to many studies investigating its presence, which resulted in its restrictive use. BPA is only one of among many similar diphenylmethane derivatives that are not new to industry, but are only just being investigated. Initial studies have shown that they are as, if not more, toxic than BPA.

This study reports the occurrence, sources and cycling of selected bisphenols (BPs) including BPA, bisphenol AF (BPAF), bisphenol AP (BPAP), bisphenol B (BPB), bisphenol C (BPC), bisphenol E (BPE), bisphenol F (BPF), bisphenol S (BPS) and bisphenol Z (BPZ) in different environmental and food compartments and in case of BPA, also attempts to explain urinary BPA levels on the national level. Results revealed the presence of bisphenol residues in wastewaters and meat processing plants as major sources of BPs in wastewaters. As an alternative treatment, photodegradation of selected BPs was studied and pseudo first order kinetics determined. Structural elucidation of newly formed TPs indicated formation of hydroxylated TPs of all tested BPs. Honey was selected as representative food matrix. Honey samples from European and non-European countries and food simulant stored in different types of blank honey packaging were analyzed. Various honey samples contained BPA, BPAF, BPE, BPF, BPS and BPZ. Under simulated conditions, only BPA and BPAF were detected in food simulant indicating that the bisphenols in honey probably derive from a source other than the final packaging. Lastly, the first national data on urinary BPA levels was evaluated with regard to potential dietary and non-dietary exposure sources, and compared between three population groups, differing by age, gender and place of residence. Results showed that urinary BPA levels in all samples were below the current health-based guidance values in all participants and were comparable with the levels reported for other European countries. Data indicated the main exposure sources, age and gender specifics as well as physiological and life-style differences between the population groups studied.

In conclusion, the selected BPs were determined in all tested matrices showing how they are ubiquitous within our environment and how we are constantly exposed to them. Despite this, the potential toxic effects at concentrations detected and in mixtures, in which they are present, are yet to be shown.


Ester Heath (F) has been employed at »Jožef Stefan« Institute since 1991. She obtained M.Sc. (1994) and Ph.D. (1998) in Chemistry – Environmental Organic Analysis at the University of Ljubljana, Ljubljana, Slovenia. She spent 15 months at University of Plymouth, Plymouth, UK and 2 years at McGill University, Montreal, QC, Canada. Currently she is a Head of Laboratory for Organic Analytical Chemistry within Department of Environmental Sciences, »Jožef Stefan« Institute and a full professor at International Posgraduate School Jožef Stefan in Ljubljana, Slovenia.
Prof Heath has been working in the field of organic analytical chemistry for over 20 years and has a broad experience in experimental work (sample preparation procedures, identification and quantitative and qualitative determination) with trace organic compounds and their stable metabolites using different analytical procedures (mass spectrometry, gas and liquid chromatography). She has also been involved in developing and evaluating different treatment processes with assessing contaminant removal, transformation and toxicity.

 
 
nike dunk high black leather chair for sale | Men's Casual Shoes, Trainers, Sneakers

Вести : : News

  • ECI

    Electrophoretic Deposition Webinar

    Electrophoretic Deposition: Fundamentals and Applications

    An ECI Webinar, November 17, 2021

    Detalji o registraciji i učešću...

     
  • CoverEV 2021 V86 No9

    Vol 86 No 9 was published

    IF 2020 1.240


    New OnLine First Article

    Development of a method for the derivatization of ethanolamines and its application to sand samples
    Tomáš Rozsypal

    10507 Graphical Abstract 68142 1 2 20210312

    New Accepted Manuscript

    Benzene-1,3-diol derivatives as the inhibitors of butyrylcholinesterase: An emergent target of Alzheimer’s disease
    Yin Dongliang, Syeda Abidda Ejaz, Mubashir Aziz, Amna Saeed, Samina Ejaz, Muhammad Sajjad Bilal, Hafriz Mohammad Kashif Mahmoud , Syeda Tehmina Ejaz

    10672 Graphical Abstract 74913 1 18 20210911

     
  • SHD medalja

    Pozivamo vas da Kancelariji dostavite svoje predloge za ovogodišnji izbor dobitnika
    medalja, 
    počasnih i zaslužnih članova Srpskog hemijskog društva.

    Predloge dostaviti u pisanom i elektronskom obliku najkasnije do 15. oktobra 2021.godineu skladu sa odredbama Pravilnika o nagradama i priznanjima Srpskog hemijskog društva.

     
  • eurofood chem logo

    Конференција XXI EuroFoodChem у Београду одлажена за септембар 2023.
    Оn-line издање од 22. до 24. новембра 2021. године.
    https://xxieurofoodchem.events.chemistry.pt

    детаљније....

     

     
  • Списак активних чланова Друштва 
    је ажуриран 9. марта 2021

    Списак чланова са плаћеном чланарином за 2021.
    је ажуриран 5. јула 2021.

     

    Running sneakers | Women's Nike Air Force 1 Shadow trainers - Latest Releases , nike air force youth size 7 white pants  
  • Websites posts 900 x 5633 900x563

    2021 DAC-EuChemS
    Lectures Awardees webinar

    četvrtak. 16. septembar 2021. 
    11:00- 13.30 časova

    detaljnije...

    Buy Kicks | air force purple heart , Giftofvision  
  • logo 300x263
    4
    th International Meeting on Materials Science for Energy Related Applications
    ONLINE MEETING - 22-23 September 2021

    No Registration Fee

    Детањније..  Read more....

    latest Running Sneakers | Men's Sneakers  
  • Green sample prep

    Студијска група и мрежа за припрему узорака EuChemS-DAC

    Члан се постаје лако, а чланство је бесплатно.

    Детањније...

    Running sports | Air Jordan Sneakers  
  • Logo YUCOMAT 2021

    22nd Conference on Material Science
    Herceg Novi, Montenegro
    August 30 - September 3, 2021

    detaljnije...

     
    latest Running | Sneakers  
  • 16th International Symposium on Applied Bioinorganic Chemistry
    Ioannina- Greece, June 6-10, 2021
    ОДЛОЖЕНО ЗА 2023.

     

     
    jordan release date | Buy online Sneaker for Men