To Örebro University

oru.seÖrebro University Publications
Change search
Link to record
Permanent link

Direct link
Fiedler, Heidelore, Dr.ORCID iD iconorcid.org/0000-0003-1496-9245
Publications (10 of 133) Show all publications
Mihalic, E., Juranović Cindrić, I., Nemet, I., Zeiner, M. & Fiedler, H. (2024). Elemental analysis of dry mango by inductively coupled plasma mass spectrometry. In: XV Meeting of Young Chemical Engineers: Book of Abstracts. Paper presented at XV Meeting of Young Chemical Engineers, Zagreb, Croatia, February 22-23, 2024 (pp. 119-119).
Open this publication in new window or tab >>Elemental analysis of dry mango by inductively coupled plasma mass spectrometry
Show others...
2024 (Croatian)In: XV Meeting of Young Chemical Engineers: Book of Abstracts, 2024, p. 119-119Conference paper, Poster (with or without abstract) (Refereed)
Abstract [hr]

Mango (Mangifera indica, L.) je vrlo popularno tropsko citrusno voće koje se može konzumirati svježe ili kao suho voće. Bogat je esencijalnim nutrijentima poput vitamina, dijetalnih vlakana i minerala, te biološki aktivnim tvarima koje nemaju nutritivnu vrijednost, ali pozitivno utječu na zdravlje. Sušeni mango odličan je izvor esencijalnih elemenata, no isto tako može sadržavati i potencijalno toksične elemente [1], [2]. Analizirani su komercijalno dostupni uzorci sušenog manga te mezokart i kora svježeg manga koji su osušeni prije analize. Prije multielementne analize metodom spektrometrije masa uz induktivno spregnutu plazmu (ICP-MS) optimizirana je metoda priprave uzorka različitim reagensima u uređaju za mikrovalno potpomognutu razgradnju. Dobiveni rezultati obrađeni su kemometrijskim metodama. Uspoređen je sadržaj elemenata u kori i mezokartu svježeg manga. U najvećoj udjelu određeni su makroelementi Ca, K, Mg i Na koji su važni za čovjekovo zdravlje, a mikroelementi prisutni u značajnijim količinama su Cu, Zn te Mn (> 3 mg kg−1), dok toksični elementi nisu pronađeni u udjelima iznad dopuštenih koji bi prema smjernicama EFSA (eng. The European Food Safety Authority) predstavljale opasnost za ljudsko zdravlje [3].

[1] B. Mirza et al., Crit. Rev. Food Sci. Nutr. 61 (2021) 2125-2151.[2] S. K. Chang et al., J. Funct. Foods 21 (2016) 113-132.[3] EFSA Panel on Nutrition, EFSA J. 20 (2022) e200102

Series
Knjiga sažetaka, E-ISSN 2718-2177
National Category
Analytical Chemistry
Identifiers
urn:nbn:se:oru:diva-111997 (URN)
Conference
XV Meeting of Young Chemical Engineers, Zagreb, Croatia, February 22-23, 2024
Available from: 2024-02-27 Created: 2024-02-27 Last updated: 2024-02-27Bibliographically approved
Puklavec, K., Juranović Cindrić, I., Nemet, I., Zeiner, M. & Fiedler, H. (2024). Elemental analysis of the almond (Prunus amygdalus) and apricot kernel (Prunus armeniaca) by inductively coupled plasma mass spectrometry. In: XV Meeting of Young Chemical Engineers: Book of Abstracts. Paper presented at XV Meeting of Young Chemical Engineers, Zagreb, Croatia, February 22-23, 2024 (pp. 83-83).
Open this publication in new window or tab >>Elemental analysis of the almond (Prunus amygdalus) and apricot kernel (Prunus armeniaca) by inductively coupled plasma mass spectrometry
Show others...
2024 (English)In: XV Meeting of Young Chemical Engineers: Book of Abstracts, 2024, p. 83-83Conference paper, Poster (with or without abstract) (Refereed)
Abstract [hr]

Koštice badema (Prunus amygdalus) i marelice (Prunus armeniaca) su plodovi bogate nutritivne vrijednosti i izuzetne dobrobiti za ljudski organizam te kao takvi važan dio zdrave i raznolike prehrane. Osim esencijalnih masnih kiselina te antioksidansa, sadrže i važne minerale neophodne za neometanu funkciju staničnih procesa. Istraživanja su pokazala da bademi pridonose smanjenju kolesterola i rizika od kardiovaskularnih bolesti [2], a osim toga vrlo važnu ulogu imaju u prehrambenoj i kozmetičkoj industriji. Koštice marelice se u obliku ulja, osim u prethodno navedenim industrijama, koriste i u medicini radi svojih antifungalnih i antibakterijskih svojstava [3]. Budući da koštice marelice sadrže veliku količinu amigdalina, poznatijeg i kao vitamin B17, koji hidrolizom prelazi u cijanovodičnu kiselinu, konzumacija veće količine ovih plodova može biti opasna po zdravlje [4]. Usitnjeni i osušeni uzorci koštica badema i marelice podvrgnuti su multielementnoj analizi metodom spektrometrije masa uz induktivno spregnutu plazmu (ICP-MS) nakon priprave uzorka mikrovalno potpomognutom razgradnjom. U analiziranim uzorcima u najvećem udjelu prisutni su K, Mg i Ca, a manje zastupljeni Fe, Zn i Mn. Potencijalno toksični elementi nisu pronađeni u udjelima opasnima za zdravlje.

[1] N. P. Kalogiouri et al., Sep. 8, 28 (2021)[2] S. Li et al., Sci. Food Agric. 96(10) (2016) 3351-3357.[3] D. Čolić et al., Sci. Hortic. 275 (2021) 109-705.[4] D. Cigolini et al., Emerg. Med. J. 28.9 (2011) 804-805

Series
Knjiga sažetaka, E-ISSN 2718-2177
National Category
Analytical Chemistry
Identifiers
urn:nbn:se:oru:diva-111998 (URN)
Conference
XV Meeting of Young Chemical Engineers, Zagreb, Croatia, February 22-23, 2024
Available from: 2024-02-27 Created: 2024-02-27 Last updated: 2024-02-27Bibliographically approved
Fiedler, H., de Boer, J. & Abad, E. (2024). Persistent organic pollutants in air across the globe using a comparative passive air sampling method. TrAC. Trends in analytical chemistry, 171, Article ID 117494.
Open this publication in new window or tab >>Persistent organic pollutants in air across the globe using a comparative passive air sampling method
2024 (English)In: TrAC. Trends in analytical chemistry, ISSN 0165-9936, E-ISSN 1879-3142, Vol. 171, article id 117494Article in journal (Refereed) Published
Abstract [en]

For the global monitoring plan (GMP) established under the Stockholm Convention on Persistent Organic Pollutants (POPs), passive air samplers (PAS) equipped with polyurethane foam disks (PUFs) were recommended for generating comparative results on the presence of POPs in countries. One representative sampling location was designed in each of the 42 countries and the PAS/PUFs exposed for three months to collect POPs during 2017–2019. The PUFs were analyzed in three laboratories according to their chemical nature and concentrations reported per PUF and 90 ± 3 days of exposure. In total, 381 PUFs were analyzed for organochlorine pesticides (OCPs), industrial chlorinated POPs, dioxin-like POPs (dl-POPs), brominated flame retardants (BFRs), and perfluoroalkane substances (PFAS). Concentrations typically varied by a factor of up to three for a POP and often within the same geographic region or other denominator such as similar latitudes or altitudes. Maximum values were found for DDT (895 ng/PUF) in Africa, but the highest medium value was in the Latin American countries. Also, polychlorinated biphenyls (PCB) and hexachlorobenzene (HCB) were most abundant across all parameters assessed. Noteworthy were high values in single countries, such as DDT in the Solomon Islands, toxaphene in Mexico, β-HCH and lindane in Tanzania, hexachlorobutadiene and hexabromocyclododecone in Mongolia, deca-BDE and PFOS in Zambia. Although we had two sampling locations at very high altitudes, >2000 m, we could determine increasing POPs concentrations with increasing altitudes only for HCB but not for other POPs. A general dependency on latitudes with higher concentrations towards the north and south pole could not be found, although the most northern station in Mongolia had two of the maxima and elevated values for some legacy POPs.

Place, publisher, year, edition, pages
Elsevier, 2024
Keywords
Stockholm convention on persistent organic pollutants, Global monitoring, Ambient air, Latitude, Altitude
National Category
Environmental Sciences
Research subject
Analytical Chemistry
Identifiers
urn:nbn:se:oru:diva-110573 (URN)10.1016/j.trac.2023.117494 (DOI)001155288800001 ()2-s2.0-85181103875 (Scopus ID)
Note

The project was founded by UNEP with funds provided by the Global Environment Facility (GEF, Washington, DC, USA). 

Available from: 2024-01-02 Created: 2024-01-02 Last updated: 2024-02-14
Fiedler, H., Abad, E. & de Boer, J. (2023). Analysis of Persistent Organic Pollutants for the Stockholm Convention's Global Monitoring Plan. Chemosphere, 332, Article ID 138843.
Open this publication in new window or tab >>Analysis of Persistent Organic Pollutants for the Stockholm Convention's Global Monitoring Plan
2023 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 332, article id 138843Article in journal, Editorial material (Other academic) Published
Place, publisher, year, edition, pages
Pergamon Press, 2023
National Category
Environmental Sciences
Identifiers
urn:nbn:se:oru:diva-105867 (URN)10.1016/j.chemosphere.2023.138843 (DOI)37149100 (PubMedID)2-s2.0-85158019765 (Scopus ID)
Available from: 2023-05-08 Created: 2023-05-08 Last updated: 2023-06-12Bibliographically approved
van der Veen, I., Fiedler, H. & de Boer, J. (2023). Assessment of the per- and polyfluoroalkyl substances analysis under the Stockholm Convention - 2018/2019. Chemosphere, 313, Article ID 137549.
Open this publication in new window or tab >>Assessment of the per- and polyfluoroalkyl substances analysis under the Stockholm Convention - 2018/2019
2023 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 313, article id 137549Article in journal (Refereed) Published
Abstract [en]

The comparability of laboratories for the analysis of per- and polyfluoroalkyl substances (PFAS) was assessed in the fourth round (2018/2019) of a series of interlaboratory assessments coordinated by the United Nations Environment Programme (UNEP) in support of the Stockholm Convention quality assurance activities as to persistent organic pollutants (POPs) laboratories reporting data under this Convention. The participating laboratories were asked to analyse PFAS concentrations in a test solution of the target compounds, in the four core matrices of the global monitoring plan (GMP), human milk, human plasma, an air extract, and water, and in a sediment and a fish matrix. 39 participating laboratories submitted PFAS data for one or more test materials. The majority of the participating laboratories originated from the Asia-Pacific region, and from the 'Western European and other groups' (WEOG). Only one laboratory from the group 'Latin America and Caribbean' (GRULAC), and two from the Central and Eastern Europe (CEE) region submitted results. None of the African laboratories submitted data. The coefficients of variation (CVs) varied from 7% to 24% (mean 14%) for the test solution. Mean CVs for all matrices, except for the human plasma test material (18%), were above the satisfactory limit of 25%. The highest mean CV was found for human milk (61%). In total 1457 z-scores were assigned of which 64% were satisfactory (|z| < 2). Instrumentation used was mainly high-performance liquid chromatography (HPLC), in combination with various mass spectrometric (MS) techniques, in most cases tandem MS (MS/MS). Additional PFAS beyond perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA), which are listed at the Stockholm Convention POPs list, as well as water as a matrix for PFAS only and human plasma were added as a service for the laboratories.

Place, publisher, year, edition, pages
Pergamon Press, 2023
Keywords
Interlaboratory assessment, Perfluorinated alkyl substance, Plasma, United Nations, Variation, Water
National Category
Environmental Sciences
Identifiers
urn:nbn:se:oru:diva-102809 (URN)10.1016/j.chemosphere.2022.137549 (DOI)000917163400001 ()36535499 (PubMedID)2-s2.0-85144626523 (Scopus ID)
Note

Funding agencies:

UN Environment, Economy Division, Chemicals and Waste Branch

Global Environment Facility (GEF)

Available from: 2022-12-20 Created: 2022-12-20 Last updated: 2023-02-13Bibliographically approved
Fiedler, H., Ábalos, M., Parera, J., Abad, E., Lohmann, N., Neugebauer, F., . . . Horstmann, M. (2023). Dioxin-like POPs in national samples from global monitoring plan projects (2017-2019). Chemosphere, 325, Article ID 138386.
Open this publication in new window or tab >>Dioxin-like POPs in national samples from global monitoring plan projects (2017-2019)
Show others...
2023 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 325, article id 138386Article in journal (Refereed) Published
Abstract [en]

The global monitoring plan (GMP) established under the Stockholm Convention on Persistent Organic Pollutants (POPs) had defined ambient air, human milk or blood, and water as core matrices to be analyzed and assessed for spatial and temporal distribution. Within projects coordinated by the United Nations Environment Programme (UNEP), developing countries were offered to have other matrices analyzed for dioxin-like POPs (dl-POPs) in experienced laboratories. Subsequently, 185 samples from 27 countries located in Africa, Asia, and Latin America were collected during 2018-2019 and analyzed for polychlorinated dibenzodioxins (PCDD), dibenzofurans (PCDF), and biphenyls (PCB). Using the WHO2005 toxic equivalency approach (TEQ), the amounts of dl-POPs found were low (<1 pg TEQ/g); however, singular samples had higher values; e.g., egg from Morocco, fish from Argentina or Tunisia; soil and sediment samples. Results showed that the matrix, abiotic or biota, had more impact on the TEQ pattern than the geographic location. Independent of the location and across all samples, dl-PCB in (shell)fish and beef samples had a contribution of 75% to the total TEQ; milk (63%), chicken (52%), and butter (50.2%) more than 50%. Sediment (57% and 32%) and soil (40% and 36%)) samples were dominated by PCDD and PCDF, respectively; therein, dl-PCB had shares of 11% and 24%. Egg samples (N = 27) did not follow the general biota pattern and had 21% of the TEQ from the PCDD, 45% from PCDF, and 34% from dl-PCB; thus, indicating that abiotic matrices such as soil or other material may have an impact.

Place, publisher, year, edition, pages
Pergamon Press, 2023
Keywords
Abiotic and biota samples, Environmental monitoring, Dioxin analysis, Developing countries, Toxic equivalents pattern
National Category
Environmental Sciences
Identifiers
urn:nbn:se:oru:diva-104907 (URN)10.1016/j.chemosphere.2023.138386 (DOI)000955561100001 ()36914011 (PubMedID)2-s2.0-85150203650 (Scopus ID)
Note

Funding agency:

Global Environment Facility (GEF)

Available from: 2023-03-14 Created: 2023-03-14 Last updated: 2023-04-17Bibliographically approved
Mihalic, E., Juranović Cindrić, I., Nemet, I., Zeiner, M. & Fiedler, H. (2023). Elementna analiza sušenog manga spektrometrijom masa uz induktivno spregnutu plazmu. In: : . Paper presented at Osmi simpozij studentena kemicara (SiSK 2023), Zagreb, Croatia, October 21, 2023.
Open this publication in new window or tab >>Elementna analiza sušenog manga spektrometrijom masa uz induktivno spregnutu plazmu
Show others...
2023 (Croatian)Conference paper, Poster (with or without abstract) (Refereed)
National Category
Chemical Sciences
Research subject
Analytical Chemistry
Identifiers
urn:nbn:se:oru:diva-109024 (URN)
Conference
Osmi simpozij studentena kemicara (SiSK 2023), Zagreb, Croatia, October 21, 2023
Available from: 2023-10-17 Created: 2023-10-17 Last updated: 2023-10-18Bibliographically approved
Wang, B., Heng, L., Sui, Q., Peng, Z., Xiao, X., Zheng, M., . . . Yu, G. (2023). Insight of chemical environmental risk and its management from the vinyl chloride accident. Frontiers of Environmental Science and Engineering, 17(4), Article ID 52.
Open this publication in new window or tab >>Insight of chemical environmental risk and its management from the vinyl chloride accident
Show others...
2023 (English)In: Frontiers of Environmental Science and Engineering, ISSN 2095-2201, E-ISSN 2095-221X, Vol. 17, no 4, article id 52Article in journal (Refereed) Published
Abstract [en]

The combustion of vinyl chloride (VC) after the train derailment accident in Ohio, USA in February, 2023 has caused widespread concern around the world. This paper tried to analyze several issues concerning the accident, including the appropriateness of the VC combustion in the emergency response in this accident, the meanings of so-called "controlled combustion", the potential environmental risks caused by VC and combustion by-products, and follow-up work. In our view, this accident had surely caused environmental and health risks to some extent. Hence, a comprehensive environmental risk assessment is necessary, and then the site with risk should be comprehensively remediated, hazardous waste should be harmlessly treated as soon as possible. Finally, this accident suggests that further efforts should be taken to bridge the gap between chemical safety management and their environmental risk management.

Place, publisher, year, edition, pages
Springer, 2023
Keywords
Vinyl chloride, Combustion, Chemical safety management, Environmental risk, Emerging contaminants
National Category
Environmental Sciences
Identifiers
urn:nbn:se:oru:diva-105560 (URN)10.1007/s11783-023-1652-x (DOI)000957017600001 ()2-s2.0-85150926185 (Scopus ID)
Available from: 2023-04-17 Created: 2023-04-17 Last updated: 2023-04-17Bibliographically approved
Fiedler, H., Li, X. & Zhang, J. (2023). Persistent organic pollutants in human milk from primiparae: correlations, global, regional, and national time-trends. Chemosphere, 313, Article ID 137484.
Open this publication in new window or tab >>Persistent organic pollutants in human milk from primiparae: correlations, global, regional, and national time-trends
2023 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 313, article id 137484Article in journal (Refereed) Published
Abstract [en]

Human breast milk reflects body burden of chemicals and has been used for exposure assessment to estimate risks of humans from pollutants. Harmonized protocols for sampling and analysis of persistent organic pollutants (POPs) have become widely available after the entry-into-force of the Stockholm Convention on POPs and activities coordinated by the United Nations Environment Programme (UNEP). These protocols promote the generation of national pools consisting of breast milk from first mothers directed to assess at national level but have not been assessed comprehensively. Early surveys date back to the mid-1980s, but the majority of the pools and high numbers of POPs analytes were available after the year 2000. Our assessment of pools from 90 countries for 29 POPs showed declining time trends for almost all POPs and significant differences between all 5-year time periods. However, in general, the most recent data from samples collected between 2015 and 2019, were no longer different from the period immediately prior. The strongest declines were seen for POPs that have already been measured for more than 30 years, i.e., dioxin-like POPs and polychlorinated biphenyls (PCB)). For certain initial and newly listed POPs, such as aldrin, endrin, mirex, toxaphene, α-HCH, chlordecone, endosulfan, pentachlorobenzene, hexachlorobutadiene, decabromo diphenyl ether, hexabromobiphenyl 153, and perfluorohexane sulfonate, the median values in pools were always zero, and some of them were never quantified in these human milk pools. Since these POPs may be present at national level, we recommend including all listed POPs into surveys related to the Stockholm Convention.

Place, publisher, year, edition, pages
Pergamon Press, 2023
Keywords
Human biomonitoring, Time series, Baseline assessment, Integrative datasets
National Category
Environmental Sciences
Identifiers
urn:nbn:se:oru:diva-102753 (URN)10.1016/j.chemosphere.2022.137484 (DOI)000904037100003 ()36513202 (PubMedID)2-s2.0-85144339130 (Scopus ID)
Note

Funding agency:

United Nations Environment Programme (UNEP)

Available from: 2022-12-16 Created: 2022-12-16 Last updated: 2023-01-17Bibliographically approved
Surenjav, E. & Fiedler, H. (2023). POPs in the Mongolian environment. Emerging Contaminants, 9(4), Article ID 100251.
Open this publication in new window or tab >>POPs in the Mongolian environment
2023 (English)In: Emerging Contaminants, ISSN 2405-6650, E-ISSN 2405-6642, Vol. 9, no 4, article id 100251Article in journal (Refereed) Published
Abstract [en]

An environmental and human monitoring project analyzing the persistent organic pollutants (POPs) listed in the Annexes of the Stockholm Convention on POPs was implemented in Mongolia with sampling activities from 2017 until 2019. In support of the global monitoring plan implementation, a total of 51 samples were analyzed for POPs whereby 23 POPs were detected frequently. Two POPs, endrin and hexabromobiphenyl (PBB 153), were not quantified in any of the samples; toxaphene was found only twice in air samples; and dicofol, pentachlorophenol, and short-chain chlorinated paraffins were analyzed only in one human milk sample. Most results were for perfluorooctanoic acid (PFOA, 32 of 43 samples) and perfluorooctanesulfonic acid (PFOS, 31 of 43 samples). With respect to detection frequency, dioxin-like polychlorinated biphenyls (dl-PCB) were detected in 100% of the samples analyzed (N 1/4 28). On scale, highest amounts were found in soil samples, almost 30 000 ng/g for lindane, more than 13 000 ng/g for a-hexachlorocyclohexane (a-HCH), and almost 10 000 ng/g for dichlorochlorodiphenyltrichloroethane (DDT) and its transformation products. The soil and ambient air samples were the drivers towards highest values in the abiotic samples, due to the presence of legacy POPs such as DDT, indicator PCB, HCHs but also hexachlorobenzene (HCB), and pentachlorobenzene (PeCBz). Concentrations of dioxin-like POPs were low in general as were the perfluorinated substances (PFAS). With respect to brominated flame retardants, the presence of hexabromocyclododecane in air samples was surprising. At present, the analytical capacity to analyze POPs in various matrices under the global monitoring plan for POPs is being set-up to strengthen future environmental monitoring activities in Mongolia.

Place, publisher, year, edition, pages
KeAi Communications Co., 2023
Keywords
Developing country, Stockholm Convention on Persistent, Organic Pollutants, Cross-matrix assessment, Multi-pollutants, Chemical analysis
National Category
Environmental Sciences
Identifiers
urn:nbn:se:oru:diva-107729 (URN)10.1016/j.emcon.2023.100251 (DOI)001037552200001 ()2-s2.0-85165094026 (Scopus ID)
Note

Funding agencies:

Global Environment Facility (GEF) 4894

Ministry of Environment and Tourism, Mongolia

Available from: 2023-08-25 Created: 2023-08-25 Last updated: 2023-10-09Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0003-1496-9245

Search in DiVA

Show all publications