Tuesday 9 August 2022

 

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

  • CoverEV 2022 V87 No7 8 400

    Vol 87 No 7-8 was published

    IF 2021 1.100


    New Accepted Manuscript

    Anticorrosion action of the olive leaf compounds extracted under optimal parameters as determined with experimental design
    Souad Touazi, Mihael Bučko, Radouane Maizia, Samira Sahi, Nadia Zaidi, Laid Makhloufi

    11851 Graphical Abstract 64298 82935 2 20220513

    New OnLine First Article

    Forced degradation studies and structural characterization of related substances of bisoprolol fumarate in finished drug product using LC–UV–MS/MS
    Elena Lazarevska Todevska, Marjan Piponski, Marina Stefova
    11609 Graphical Abstract 65135 83887 15 20220620

     
  • logo
    Четири медаље за наше средњошколце на
    54. Међународној хемијској олимпијади

    Прочитајте комплетну информацију

     
  • On June 30, 2022 new Impact Factors are published

    JSCS has reached the IF 1.100 
    5 year IF 1.175

     
  • 40 godina sekcija lat

    Ciklus predavanja povodom 40 godina Sekcije za zaštitu životne sredine SHD.

    Novo predavanje u ciklusu biće održano je 5. jula 2022. u 14.00 časova
    u Sali za sednice Hemijskog fakultetaUniverziteta u Beogradu, Studentski trg 12-16:

    Prof. dr Ivana Ivančev-Tumbas, Prirodno-matematički fakultet, Univerzitet u Novom Sadu
    Monolog jednog hemičara- kako do zdrave i bezbedne vode?
    Predavanje je moguće pratiti onlajn, na adresi: https://tinyurl.com/5x8ymf66

    Spisak svih predavanja i detaljnije informacije o predavanju možete pronaći OVDE

     
     
  • Списак активних чланова Друштва 
    је ажуриран 14. јуна 2022.
    (новог ажурирања у 2022. неће бити)

    Списак чланова са плаћеном чланарином за 2022.
    је ажуриран 14. јуна 2022.
    (ново ажурирање у септембру 2022.)

     
  • Serbia Српски - Periodic Table of Elements and Isotopes

    IUPAC je objavio najnoviju verziju
    PERIODNOG SISTEMA ELEMENATA

    Objavljena je i verzija na srpskom

     
  • logo240

    The 8th Regional Symposium on Electrochemistry of South-East Europe will be held in Graz, Austria on 11-15 July 2022. 

    Program konferencije je objavljen: 
    http://www.aseee.eu/index.php/programrse8

    More information...

     
  • Lisabon
    http://www.euchems2022.eu/ 
    Рок за слање радова је 30. март 2022.

     
  • FIp FyfXEAAsMY0
    26th International Symposium on Separation Sciences &
    25th International Symposium for High-Performance Thin-Layer Chromatography

    June 28 - July 1 2022
    Ljubljana, Slovenia

    https://isss2020.si/ & https://hptlc2020.si/

     
  • Чланарине и претплате за 2022. годину су непромењене, молимо све чланове да на време обнове чланарину.

    ДЕТАЉНЕ ИНФОРМАЦИЈЕ СУ ДОСТУПНЕ ОВДЕ!

    Чланови добијају часопис Хемијски преглед од првог следећег броја који буде публикован након евидентирања уплате чланарине.

    Обновите чланарину за 2022 или се учланите у Друштво
    Renew memebership or Join Society now

    Приступница : : Membership Form


     
  • ChemEu

    Na poziv Predsednika EuChemS Florisa Rutjesa, Slavica Ražić (predsednik Sekcije za analitičku hemiju EuChemS) i Péter Szalay (predsednik Sekcije za kompjutersku i teorijsku hemiju EuChemS), napisali su uvodnik za najnoviji broj glasila EuChemS, Chemistry in Europe.
    Članak Challenges towards a sustainable future, možete pročitati na  https://www.euchems.eu/newsletters/chemistry-in-europe-2021-3/

     
     
  • eurofood chem logo

    Конференција XXI EuroFoodChem у Београду одлажена за септембар 2023.

     
  • Green sample prep

    Студијска група и мрежа за припрему узорака EuChemS-DAC

    Члан се постаје лако, а чланство је бесплатно.

    Детањније...

     

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

     

     
    jordan release date | Buy online Sneaker for Men