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Otake T, Aoyagi Y, Yarita T. Assessment of the long-term stability of pesticide residues under freezing conditions in brown rice and soybean certified reference materials. JOURNAL OF PESTICIDE SCIENCE 2024; 49:46-51. [PMID: 38450090 PMCID: PMC10912925 DOI: 10.1584/jpestics.d23-047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 10/16/2023] [Indexed: 03/08/2024]
Abstract
The objective of this study was to assess the long-term stability of pesticide residues in brown rice and soybean. The long-term stability of pesticide residues in brown rice and soybean was assessed for 5415 days (over 14 years) and 1801 days (about 5 years), respectively. The samples-certified reference materials (CRMs) 7504-a (brown rice) and 7509-a (soybean) -were prepared by freeze-pulverization. Two target pesticides (etofenprox and fenitrothion) were selected for brown rice and four (chlorpyrifos, diazinon, fenitrothion, and permethrin) for soybean. Our analytical results for long-term stability based on highly reliable isotope dilution mass spectrometry were in the range of expanded uncertainty (k=2) for the certified values of each CRM. The concentration showed a decreasing trend in none of the target pesticides when the samples were stored at temperatures between -20 °C and -30 °C, which indicated that the target pesticides were stable for the tested long terms.
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Affiliation(s)
- Takamitsu Otake
- National Metrology Institute of Japan (NMIJ) National Institute of Advanced Industrial Science and Technology (AIST)
| | - Yoshie Aoyagi
- National Metrology Institute of Japan (NMIJ) National Institute of Advanced Industrial Science and Technology (AIST)
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Sormunen T, Uusitalo S, Lindström H, Immonen K, Mannila J, Paaso J, Järvinen S. Towards recycling of challenging waste fractions: Identifying flame retardants in plastics with optical spectroscopic techniques. WASTE MANAGEMENT & RESEARCH : THE JOURNAL OF THE INTERNATIONAL SOLID WASTES AND PUBLIC CLEANSING ASSOCIATION, ISWA 2022; 40:1546-1554. [PMID: 35331055 PMCID: PMC9561808 DOI: 10.1177/0734242x221084053] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 02/05/2022] [Indexed: 06/14/2023]
Abstract
The use of plastics is rapidly rising around the world causing a major challenge for recycling. Lately, a lot of emphasis has been put on recycling of packaging plastics, but, in addition, there are high volume domains with low recycling rate such as automotive, building and construction, and electric and electronic equipment. Waste plastics from these domains often contain additives that restrict their recycling due to the hazardousness and challenges they bring to chemical and mechanical recycling. As such, the first step for enabling the reuse of these fractions is the identification of these additives in the waste plastics. This study compares the ability of different optical spectroscopy technologies to detect two different plastic additives, fire retardants ammonium polyphosphate and aluminium trihydrate, inside polypropylene plastic matrix. The detection techniques near-infrared (NIR), Fourier-transform infrared (FTIR) and Raman spectroscopy as well as hyperspectral imaging (HSI) in the short-wavelength infrared (SWIR) and mid-wavelength infrared (MWIR) range were evaluated. The results indicate that Raman, NIR and SWIR HSI have the potential to detect these additives inside the plastic matrix even at relatively low concentrations. As such, utilising these methods has the possibility to facilitate sorting and recycling of as of yet unused plastic waste streams, although more research is needed in applying them in actual waste sorting facilities.
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Affiliation(s)
- Tuomas Sormunen
- VTT Technical Research Centre of
Finland Ltd., Oulu, Finland
| | - Sanna Uusitalo
- VTT Technical Research Centre of
Finland Ltd., Oulu, Finland
| | - Hannu Lindström
- VTT Technical Research Centre of
Finland Ltd., Oulu, Finland
| | - Kirsi Immonen
- VTT Technical Research Centre of
Finland Ltd., Tampere, Finland
| | - Juha Mannila
- VTT Technical Research Centre of
Finland Ltd., Tampere, Finland
| | - Janne Paaso
- VTT Technical Research Centre of
Finland Ltd., Oulu, Finland
| | - Sari Järvinen
- VTT Technical Research Centre of
Finland Ltd., Oulu, Finland
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Peng Z, Shao M, Yu M, Lu B, Zhao X, Li P, Song S, Liu Q, Zhou T, Zhang Q. Calculation and Experimental Validation of a Novel Approach Using Solubility Parameters as Indicators for the Extraction of Additives in Plastics. Anal Chem 2021; 93:14837-14843. [PMID: 34714065 DOI: 10.1021/acs.analchem.1c03731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Accurately quantifying chemical additives with adverse health effects in plastic products is critical for environmental safety and risk assessment. In this work, a novel approach using solubility parameters (δ) as indicators for the extraction of additives in plastics was developed. The mechanism was evaluated by using 10 organic solvents with different solubility parameters to extract brominated flame-retardant-decabrominated diphenyl ether (BDE-209) in polyethylene (PE), polypropylene (PP), and polyethylene terephthalate (PET). Certified reference materials (CRMs) or CRM candidate materials were applied as matrix materials. The extracted BDE-209 and solubility parameters of solvents could fit into a curve of a quadratic function. The value of abscissa corresponding to the vertex of the function was close to the solubility parameter of plastic calculated by the group contribution method (Δδ < 0.37). Toluene, n-hexane, and acetone were the solvents with high extraction efficiency for PE, PP, and PET, confirming the feasibility of the developed approach. The results of ethyl acetate and acetone indicated the high weight of functional groups affecting the dissolution behavior. The developed approach was further verified by analyzing penta-/octa-BDE and phthalate esters in PET and polyvinyl chloride (PVC) and finally applied to analyze 15 plastic products made of PP, PE, PET, polystyrene, and PVC. The detected tetrabromodiphenyl ether (BDE-47), BDE-209, decabromodiphenyl ethane, and di(2-ethylhexyl) terephthalate all matched the approach and verified its practicability for field sample analysis.
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Affiliation(s)
- Zijuan Peng
- National Institute of Metrology, China, Beijing 100029, China
| | - Mingwu Shao
- National Institute of Metrology, China, Beijing 100029, China
| | - Miao Yu
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, New York 10029, United States
| | - Boling Lu
- National Institute of Metrology, China, Beijing 100029, China.,Tianjin University of Technology, Tianjin 300384, China
| | - Xingchen Zhao
- State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, Hong Kong 999077, China.,State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Penghui Li
- Tianjin University of Technology, Tianjin 300384, China
| | - Shanjun Song
- National Institute of Metrology, China, Beijing 100029, China
| | - Qian Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Tao Zhou
- National Institute of Metrology, China, Beijing 100029, China
| | - Qinghe Zhang
- National Institute of Metrology, China, Beijing 100029, China
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Otake T, Yarita T. Internationally harmonized certified reference materials and proficiency testings for pesticide residue analysis. JOURNAL OF PESTICIDE SCIENCE 2021; 46:297-303. [PMID: 34566465 PMCID: PMC8422250 DOI: 10.1584/jpestics.j21-03] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 05/28/2021] [Indexed: 06/13/2023]
Abstract
Matrix certified reference materials (CRMs) and proficiency testings (PTs) are effective for evaluation of the quality of analytical results. The National Metrology Institute of Japan has developed five kinds of CRMs and has provided eight PTs so far for the quantification of pesticide residues in foods. Target pesticides were sprayed on growing crops, and the harvests were used for the preparation of CRMs and PT samples. In most cases, multiple analytical methods based on isotope dilution mass spectrometry were used to ensure the reliability of certified values (for CRMs) and reference values (for PT samples). These activities were carried out with corresponding to the international standards such as ISO 17034 and ISO/IEC 17043. An overview of the development of CRMs and the implementation of PTs is described, with some examples.
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Affiliation(s)
- Takamitsu Otake
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), 1–1–1 Umezono, Tsukuba, Ibaraki 305–8563, Japan
| | - Takashi Yarita
- College of Agriculture, Ibaraki University, 3–21–1 Chuo, Ami, Inashiki, Ibaraki 300–0321, Japan
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Portet-Koltalo F, Guibert N, Morin C, de Mengin-Fondragon F, Frouard A. Evaluation of polybrominated diphenyl ether (PBDE) flame retardants from various materials in professional seating furnishing wastes from French flows. WASTE MANAGEMENT (NEW YORK, N.Y.) 2021; 131:108-116. [PMID: 34120076 DOI: 10.1016/j.wasman.2021.05.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/30/2021] [Accepted: 05/28/2021] [Indexed: 06/12/2023]
Abstract
Polybrominated diphenyl ethers (PBDEs) are brominated flame retardants that are used in polymeric materials. Due to their adverse health effects, the use of recycled wastes has been forbidden if the total PBDE content exceeds 0.1% (w/w). The objective was to estimate the proportion of PBDEs in professional seating furnishing wastes to identify the materials in which the content of PBDEs (and particularly BDE-209) could exceed the limit to eliminate them from recycling. An analytical process (microwave extraction followed by purification and chromatographic analysis) was adapted to assess with a unique methodology the amounts of eight PBDEs in materials that result from various seating wastes, such as hard plastics, foams and accompanying textiles. X-ray fluorescence (XRF) was used to rapidly predict critical PBDE concentrations via Br. From 100 samples, the total PBDE content did not exceed the current tolerated threshold. The examined materials contained only trace levels of former PBDE formulations, and BDE-209 was identified at higher amounts, mainly in hard plastics, but these amounts were less than 312 mg kg-1. Since XRF was not reliable for quantitative measurements and was not specific, no direct correlation could be identified between Br and PBDE levels. Br was strongly associated with As in all the materials, but the presence of PBDEs was not clearly associated with the presence of other metals that are used in flame retardants.
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Affiliation(s)
- Florence Portet-Koltalo
- Normandie University, UNIROUEN, COBRA Laboratory UMR CNRS 6014, 55 rue Saint Germain, 27000 Evreux, France.
| | - Nicolas Guibert
- Normandie University, UNIROUEN, COBRA Laboratory UMR CNRS 6014, 55 rue Saint Germain, 27000 Evreux, France.
| | - C Morin
- Normandie University, UNIROUEN, COBRA Laboratory UMR CNRS 6014, 55 rue Saint Germain, 27000 Evreux, France.
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Śmiełowska M, Zabiegała B. Current trends in analytical strategies for determination of polybrominated diphenyl ethers (PBDEs) in samples with different matrix compositions – Part 1.: Screening of new developments in sample preparation. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2018.09.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Jandric A, Part F, Fink N, Cocco V, Mouillard F, Huber-Humer M, Salhofer S, Zafiu C. Investigation of the heterogeneity of bromine in plastic components as an indicator for brominated flame retardants in waste electrical and electronic equipment with regard to recyclability. JOURNAL OF HAZARDOUS MATERIALS 2020; 390:121899. [PMID: 31879115 DOI: 10.1016/j.jhazmat.2019.121899] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 11/22/2019] [Accepted: 12/13/2019] [Indexed: 06/10/2023]
Abstract
Waste electrical and electronic equipment (WEEE) can contain brominated flame retardants (BFRs) that pose a threat to human health and the environment. In addition, Br-containing plastics reduce the recycling potential of WEEE. In order to gain a better insight into the distribution of Br in plastics from WEEE, the total concentration of Br was measured on the level of device types and plastic components using handheld X-ray fluorescence (hXRF). In 35 % of the sample size (882 components from 369 different devices, which originate from 6 device types) Br was detected, 5 % exceeded the RoHS limit. Only few and older devices contained high Br concentrations, while the majority were below the RoHS limit and could be recycled. In addition, 18 different plastic types were identified by infrared spectroscopy, with acrylonitrile butadiene styrene being the most abundant (44 % of all samples). Manual dismantling of devices into individual plastic components enabled us to examine Br hotspots and the variety of plastic types in WEEE. Based on this analytical procedure, WEEE recyclers could exclude certain equipment or plastic components (e.g. power supplies or PC housings) directly on-site prior to WEEE recycling and shredding in order to produce high-quality recycled products and avoid cross-contamination.
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Affiliation(s)
- A Jandric
- Department of Water-Atmosphere-Environment, Institute of Waste Management, University of Natural Resources and Life Sciences, Muthgasse 107, 1190 Vienna, Austria
| | - F Part
- Department of Water-Atmosphere-Environment, Institute of Waste Management, University of Natural Resources and Life Sciences, Muthgasse 107, 1190 Vienna, Austria; Department of Nanobiotechnology, Institute for Synthetic Bioarchitectures, University of Natural Resources and Life Sciences, Muthgasse 11/II, 1190 Vienna, Austria.
| | - N Fink
- Department of Water-Atmosphere-Environment, Institute of Waste Management, University of Natural Resources and Life Sciences, Muthgasse 107, 1190 Vienna, Austria
| | - V Cocco
- Department of Civil and Environmental Engineering and Architecture, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy
| | - F Mouillard
- Department of Water-Atmosphere-Environment, Institute of Waste Management, University of Natural Resources and Life Sciences, Muthgasse 107, 1190 Vienna, Austria
| | - M Huber-Humer
- Department of Water-Atmosphere-Environment, Institute of Waste Management, University of Natural Resources and Life Sciences, Muthgasse 107, 1190 Vienna, Austria
| | - S Salhofer
- Department of Water-Atmosphere-Environment, Institute of Waste Management, University of Natural Resources and Life Sciences, Muthgasse 107, 1190 Vienna, Austria
| | - C Zafiu
- Department of Water-Atmosphere-Environment, Institute of Waste Management, University of Natural Resources and Life Sciences, Muthgasse 107, 1190 Vienna, Austria
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Blázquez-Blázquez E, Cerrada ML, Benavente R, Pérez E. Identification of Additives in Polypropylene and Their Degradation under Solar Exposure Studied by Gas Chromatography-Mass Spectrometry. ACS OMEGA 2020; 5:9055-9063. [PMID: 32363257 PMCID: PMC7191600 DOI: 10.1021/acsomega.9b03058] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 01/23/2020] [Indexed: 05/12/2023]
Abstract
Additives are absolutely essential in the development of commercial polymeric materials. Accordingly, an exhaustive control of composition and evolution in these additives over time is necessary to validate their performance and safety during their shelf life and, consequently, their ultimate applications. Gas chromatography coupled with mass spectrometry, GC-MS, is described in the present work to identify and analyze the content of a wide variety of additives, commonly used in industrial polymeric materials. First, the identification under the present experimental protocol of additives with a relatively high molecular weight (Irganox 1330 and Irganox 1010) has been successfully attained. Second, the evolution under solar exposure over time has been analyzed by GC-MS for 11 additives and derived substances, which have been identified in a commercial polypropylene sample, estimating the corresponding depletion times. In addition, the resultant increase of carbonyl groups in the polymeric macrochains along the photo-oxidation has been also determined by infrared spectroscopy. Therefore, GC-MS is found to be a reliable tool for the analysis of the evolution of commonly used polymer additives under specific degradation conditions, which can be very useful in the formulation of improved future additivations.
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Liu Y, Wang Z, Zhang Q, Bai H, Cai Y, Yan Z, Lv Q. Optimization of multi-residue method for targeted screening and quantification of 216 harmful chemicals in plastic children's toys by gas chromatography-tandem mass spectrometry analysis. J Chromatogr A 2019; 1603:311-326. [PMID: 31272731 DOI: 10.1016/j.chroma.2019.06.047] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 06/21/2019] [Accepted: 06/23/2019] [Indexed: 11/16/2022]
Abstract
Herein, we report a multi-residue method based on dissolution-precipitation extraction combined with gas chromatography-tandem mass spectrometry (GC-MS/MS) analysis for targeted screening and quantification of 216 harmful chemicals in plastic children's toys. We established a spectrogram database containing the first-order mass spectra of all analytes and their second-order mass spectra at different collision energies. Good separation was attained in less than 60 min. As a simple and low-cost extraction method, dissolution-precipitation exhibited good recoveries for the analytes in the plastic samples. The matrix-matched standard curves were accurate for analyte quantification in specific plastics due to the solvent effects and matrix effects. The limits of quantification range were 0.1 mg/kg to 10 mg/kg. A wide linear range of 0.1-200 mg/kg was also observed, with r2≥0.9924. The average recoveries ranged from 63.9% to 137.6%, and the relative standard deviation (n = 6) varied from 0.6% to 13.2%. Finally, 31 ABS actual toys and 30 PVC actual toys were detected and 20 analytes with contents ranging from 0.4 mg/kg to 172 mg/kg and 30 analytes from 0.8 mg/kg to 141,030 mg/kg were discovered respectively.
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Affiliation(s)
- Yahui Liu
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China; College of Chemistry & Environmental Science, Hebei University, Baoding 071002, China
| | - Zhijuan Wang
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China
| | - Qing Zhang
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China
| | - Hua Bai
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China.
| | - Yaqi Cai
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Science, Chinese Academy of Sciences, Beijing 100085, China
| | - Zheng Yan
- College of Chemistry & Environmental Science, Hebei University, Baoding 071002, China
| | - Qing Lv
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Science, Chinese Academy of Sciences, Beijing 100085, China.
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Otake T, Yarita T, Aoyagi Y, Hanari N, Takatsu A. Proficiency testing by the National Metrology Institute of Japan for quantification of pesticide residues in grain samples from 2012 to 2018. JOURNAL OF PESTICIDE SCIENCE 2019; 44:192-199. [PMID: 31576194 PMCID: PMC6753258 DOI: 10.1584/jpestics.d19-031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 05/21/2019] [Indexed: 05/21/2023]
Abstract
From 2012 to 2018, proficiency testings (PTs) were carried out to support the analytical skill development of participants. Grains were sprayed with various target pesticides and used as material samples for PTs. It was found that 27-56% and 10-43% of participants used the Japanese official multiresidue method and a solid-phase extraction technique with the Quick, Easy, Cheap, Effective, Rugged, and Safe (modified QuEChERS, known as "STQ" in Japan) method, respectively. Reported results were evaluated using two types of z-scores: one was based on consensus values calculated from the analytical results reported by the participants, and the other was based on values obtained by the National Metrology Institute of Japan (NMIJ). Acceptable z-scores based on the consensus values and NMIJ reference values were achieved by 78-95% and 67-94% of the participants, respectively. Many laboratories improved their z-scores by continuing participation in our PT.
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Affiliation(s)
- Takamitsu Otake
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), 1–1–1, Umezono, Tsukuba, Ibaraki 305–8563, Japan
| | - Takashi Yarita
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), 1–1–1, Umezono, Tsukuba, Ibaraki 305–8563, Japan
- College of Agriculture, Ibaraki University, 3–21–1 Chuo, Ami, Inashiki, Ibaraki 300–0321, Japan
| | - Yoshie Aoyagi
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), 1–1–1, Umezono, Tsukuba, Ibaraki 305–8563, Japan
| | - Nobuyasu Hanari
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), 1–1–1, Umezono, Tsukuba, Ibaraki 305–8563, Japan
| | - Akiko Takatsu
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), 1–1–1, Umezono, Tsukuba, Ibaraki 305–8563, Japan
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Li Y, Chang Q, Duan H, Liu Y, Zhang J, Li J. Occurrence, levels and profiles of brominated flame retardants in daily-use consumer products on the Chinese market. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2019; 21:446-455. [PMID: 30676604 DOI: 10.1039/c8em00483h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
With the global phasing-out of POP-BFRs (brominated flame retardants restricted under the Stockholm Convention on Persistent Organic Pollutants), the main challenge for their environmentally sound management has shifted from manufacturing and consumption to their recycling and disposal. For the end-of-life products containing POP-BFRs, material recycling and reuse in new articles is the favorite approach widely adopted by recyclers. This would result in POP-BFRs being transferred into daily-use consumer products. To identify the possible reservoirs of POP-BFRs in consumer products on the Chinese market, 120 samples were screened for Br by using a portable X-ray fluorescence (XRF) spectrometer, and the three traditional BFRs, i.e., polybrominated diphenyl ethers (PBDEs), hexabromocyclododecane (HBCD) and tetrabromobisphenol A (TBBPA), were analyzed in 15 Br-positive samples. The results showed that 36.7% of products contained at least one test point positive for Br, and higher detection frequencies were found in electric appliances and toys. The concentrations of ∑BFRs ranged from 0.48 to 73.82 mg kg-1 with a general contribution in the order of ∑PBDEs > TBBPA > HBCD. BDE-209 was the dominant congener among PBDEs in most investigated samples, accounting for 48.18-99.36%. Relatively high proportions of the more bioaccumulative and toxic substances of lower brominated PBDE congeners and α-HBCD in products may increase the adverse impacts on the environment and human health. The obtained results will be helpful to understand the downstream flow of POP-BFRs with great significance to the control on their unintended contamination in daily life.
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Affiliation(s)
- Ying Li
- School of Chemical and Environmental Engineering, North University of China, Taiyuan 030051, China.
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Hatipoglu SD, Yalcinkaya B, Akgoz M, Ozturk T, Goren AC, Topcu G. Screening of Hallucinogenic Compounds and Genomic Characterisation of 40 Anatolian Salvia Species. PHYTOCHEMICAL ANALYSIS : PCA 2017; 28:541-549. [PMID: 28722248 DOI: 10.1002/pca.2703] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 05/18/2017] [Accepted: 05/18/2017] [Indexed: 06/07/2023]
Abstract
INTRODUCTION Salvia, an important and widely available member of Lamiaceae family. Although comparative analysis on secondary metabolites in several Salvia species from Turkey has been reported, their hallucinogenic chemicals have not been screened thoroughly. OBJECTIVE This study provides LC-MS/MS analysis of 40 Salvia species for screening their psychoactive constituents of salvinorin A and salvinorin B. 5S-rRNA gene non-coding region of Salvia plants was sequenced, aligned and compared with that sequence of Salvia divinorum plant. METHODOLOGY Targeted molecules of salvinorin A and salvinorin B were quantified, using LC-MS/MS, from all aerial parts of 40 Salvia species, collected from different parts of Turkey. Regions of 5S-rRNA gene from different species were amplified by polymerase chain reaction and DNA sequences were aligned with Salvia divinorum DNA sequences. RESULTS Very few of the Salvia species (S. recognita, S. cryptantha and S. glutinosa) contained relatively high levels of salvinorin A (212.86 ± 20.46 μg/g, 51.50 ± 4.95 μg/g and 38.92 ± 3.74 μg/g, respectively). Salvinorin B was also found in Salvia species of S. potentillifolia, S. adenocaulon and S. cryptantha as 2351.99 ± 232.22 μg/g, 768.78 ± 75.90 μg/g and 402.24 ± 39.71 μg/g, respectively. The sequences of 5S-rRNA gene of 40 different Salvia species were presented and it was found that none of the Salvia species in Turkey had similar DNA sequence to Salvia divinorum plant. CONCLUSION This is the first report of screening 40 Salvia species in Turkey according to their psychoactive constituents, salvinorin A and salvinorin B and their genomic structures. It is possible that some of these Salvia species may exhibit some psycho activity. Thus, they need to be screened further. Copyright © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- Seda Damla Hatipoglu
- TUBITAK National Metrology Institute (UME), Reference Materials Laboratory, 41400, Kocaeli, Turkey
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, 34469, Istanbul, Turkey
| | - Burhanettin Yalcinkaya
- Bioanalysis Laboratory, TUBITAK National Metrology Institute (UME), 41400, Kocaeli, Turkey
| | - Muslum Akgoz
- Bioanalysis Laboratory, TUBITAK National Metrology Institute (UME), 41400, Kocaeli, Turkey
| | - Turan Ozturk
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, 34469, Istanbul, Turkey
- Organic Chemistry Laboratory, TUBITAK National Metrology Institute (UME), 41400, Kocaeli, Turkey
| | - Ahmet C Goren
- Organic Chemistry Laboratory, TUBITAK National Metrology Institute (UME), 41400, Kocaeli, Turkey
| | - Gulacti Topcu
- Department of Pharmacognosy and Phytochemistry, Faculty of Pharmacy, Bezmialem Vakıf University, 34093, Istanbul, Turkey
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Yu D, Duan H, Song Q, Liu Y, Li Y, Li J, Shen W, Luo J, Wang J. Characterization of brominated flame retardants from e-waste components in China. WASTE MANAGEMENT (NEW YORK, N.Y.) 2017; 68:498-507. [PMID: 28756124 DOI: 10.1016/j.wasman.2017.07.033] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 07/18/2017] [Accepted: 07/20/2017] [Indexed: 06/07/2023]
Abstract
Many studies show that high levels of many toxic metals and persistent and bio-accumulative chemicals have been found in electronic waste (e-waste) dismantling sites and their surrounding environmental media. Both flame-retardant plastic housing materials and printed circuit boards (PCBs) could be the major contributors. However, relatively little work has focused on the use or content of toxic substances and their changing in scrap housing materials and PCBs from home appliances. This study evaluated the existence of brominated flame retardants (BFRs, including polybrominated diphenyl ethers (PBDEs) and Tetrabromobisphenol-A (TBBPA)) in housing plastics and PCBs from home appliances collected from various e-waste recyclers in China. These were then analyzed for the potential migration of BFRs from the e-waste components into their recycled products. The results show that both PBDEs and TBBPA were found with high level in most of e-waste samples, indicating that the widespread use of BFRs in home appliances are entering into the end-of-life stage. For the plastics samples, CRT TVs and LCD monitors should be given priority for the control of BFRs. Regarding PBDEs, the dominant congeners of BDE-209 in the plastics samples contributed 90.72-93.54% to the total concentrations of PBDEs, yet there are large variations for PCBs samples: BDE-28, -47, -99, and -153 were also important congeners compositions, except for BDE-209. Compared with previous studies, the BFRs concentrations in current Chinese e-waste are trending to decline. This study also found that BFRs in housing plastics and PCBs will be transferred into the recycled products with other purpose use, and the new products could have highly enriched capacities for BFRs. The obtained results could be helpful to manage e-waste and their components properly in order to minimize associated environmental and health risks of BFRs, particularly for their further reuse.
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Affiliation(s)
- Danfeng Yu
- College of Civil Engineering, Shenzhen University, Shenzhen 518060, China
| | - Huabo Duan
- College of Civil Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Qingbin Song
- Macau Environmental Research Institute, Macau University of Science and Technology, Macau, China.
| | - Yicheng Liu
- Ningbo Guoke Testing Co., Ltd, Ningbo 315336, China
| | - Ying Li
- School of Chemical and Environmental Engineering, North University of China, Taiyuan 030051, China
| | - Jinhui Li
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Weijun Shen
- Ningbo Guoke Testing Co., Ltd, Ningbo 315336, China
| | - Jiahui Luo
- Ningbo Guoke Testing Co., Ltd, Ningbo 315336, China
| | - Jinben Wang
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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15
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Ghasemi N, Secen H, Yılmaz H, Binici B, Goren AC. Determination of neurotoxic agents as markers of common vetch adulteration in lentil by LC-MS/MS. Food Chem 2017; 221:2005-2009. [PMID: 27979192 DOI: 10.1016/j.foodchem.2016.11.079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 09/08/2016] [Accepted: 11/18/2016] [Indexed: 11/16/2022]
Abstract
Vicia sativa (common vetch), which contains β-cyanoalanine (BCA) and γ-glutamyl β-cyanoalanine (γGBCA) is used for adulteration of lentil and have neuro toxic effects on people and animals. Therefore the determination of BCA and γGBCA analytes in accurate and reliable manner has high importance for human and animal health. LC-IDMS/MS method has been developed and validated for quantitative analyses of β-cyanoalanine and 13C labeled BCA is used as an internal standard in γGBCA analysis. In order to validate the method, linearity, recovery, precision (repeatability), intermediate precision, limit of detection, and limit of quantification parameters were investigated. The correlation coefficient was found to be greater than 0.99 for both analytes. The recoveriess were determined as 95.8% for BCA and 97.4% for γGBCA. The relative expanded measurement uncertainties of β-cyanoalanine and γ-glutamyl-β-cyanoalanine were obtained as 4.6% and 5.8%, respectively with the coverage factor, k, is 2 and at 95% confidence level.
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Affiliation(s)
- Nesa Ghasemi
- Department of Chemistry, Faculty of Sciences, Ataturk University, 25240 Erzurum, Turkey
| | - Hasan Secen
- Department of Chemistry, Faculty of Sciences, Ataturk University, 25240 Erzurum, Turkey
| | - Hasibe Yılmaz
- TUBITAK UME (National Metrology Institute), Chemistry Group, Organic Chemistry Laboratories, P.O. Box 54, 41470 Gebze-Kocaeli, Turkey
| | - Burcu Binici
- TUBITAK UME (National Metrology Institute), Chemistry Group, Organic Chemistry Laboratories, P.O. Box 54, 41470 Gebze-Kocaeli, Turkey
| | - Ahmet C Goren
- TUBITAK UME (National Metrology Institute), Chemistry Group, Organic Chemistry Laboratories, P.O. Box 54, 41470 Gebze-Kocaeli, Turkey.
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16
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Characterization of Some Real Mixed Plastics from WEEE: A Focus on Chlorine and Bromine Determination by Different Analytical Methods. SUSTAINABILITY 2016. [DOI: 10.3390/su8111107] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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Yarita T, Aoyagi Y, Otake T. Evaluation of the impact of matrix effect on quantification of pesticides in foods by gas chromatography-mass spectrometry using isotope-labeled internal standards. J Chromatogr A 2015; 1396:109-16. [PMID: 25892640 DOI: 10.1016/j.chroma.2015.03.075] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 03/27/2015] [Accepted: 03/27/2015] [Indexed: 11/25/2022]
Abstract
The impact of the matrix effect in GC-MS quantification of pesticides in food using the corresponding isotope-labeled internal standards was evaluated. A spike-and-recovery study of nine target pesticides was first conducted using paste samples of corn, green soybean, carrot, and pumpkin. The observed analytical values using isotope-labeled internal standards were more accurate for most target pesticides than that obtained using the external calibration method, but were still biased from the spiked concentrations when a matrix-free calibration solution was used for calibration. The respective calibration curves for each target pesticide were also prepared using matrix-free calibration solutions and matrix-matched calibration solutions with blank soybean extract. The intensity ratio of the peaks of most target pesticides to that of the corresponding isotope-labeled internal standards was influenced by the presence of the matrix in the calibration solution; therefore, the observed slope varied. The ratio was also influenced by the type of injection method (splitless or on-column). These results indicated that matrix-matching of the calibration solution is required for very accurate quantification, even if isotope-labeled internal standards were used for calibration.
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Affiliation(s)
- Takashi Yarita
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 3, Umezono, Tsukuba, Ibaraki 305-8563, Japan.
| | - Yoshie Aoyagi
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 3, Umezono, Tsukuba, Ibaraki 305-8563, Japan
| | - Takamitsu Otake
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 3, Umezono, Tsukuba, Ibaraki 305-8563, Japan
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18
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Aldrian A, Ledersteger A, Pomberger R. Monitoring of WEEE plastics in regards to brominated flame retardants using handheld XRF. WASTE MANAGEMENT (NEW YORK, N.Y.) 2015; 36:297-304. [PMID: 25464945 DOI: 10.1016/j.wasman.2014.10.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 09/10/2014] [Accepted: 10/27/2014] [Indexed: 06/04/2023]
Abstract
This contribution is focused on the on-site determination of the bromine content in waste electrical and electronic equipment (WEEE), in particular waste plastics from television sets (TV) and personal computer monitors (PC) using a handheld X-ray fluorescence (XRF) device. The described approach allows the examination of samples in regards to the compliance with legal specifications for polybrominated biphenyls (PBBs) and polybrominated diphenyl ethers (PBDEs) directly after disassembling and facilitates the sorting out of plastics with high contents of brominated flame retardants (BFRs). In all, over 3000 pieces of black (TV) and 1600 pieces of grey (PC) plastic waste were analysed with handheld XRF technique for this study. Especially noticeable was the high percentage of pieces with a bromine content of over 50,000ppm for TV (7%) and PC (39%) waste plastics. The applied method was validated by comparing the data of handheld XRF with results obtained by GC-MS. The results showed the expected and sufficiently accurate correlation between these two methods. It is shown that handheld XRF technique is an effective tool for fast monitoring of large volumes of WEEE plastics in regards to BFRs for on-site measurements.
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Affiliation(s)
- Alexia Aldrian
- Chair of Waste Processing Technology and Waste Management, Montanuniversitaet Leoben, Franz-Josef-Straße 18, 8700 Leoben, Austria.
| | - Alfred Ledersteger
- Saubermacher Dienstleistungs AG, Hans-Roth-Straße 1, 8073 Feldkirchen bei Graz, Austria.
| | - Roland Pomberger
- Chair of Waste Processing Technology and Waste Management, Montanuniversitaet Leoben, Franz-Josef-Straße 18, 8700 Leoben, Austria.
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Otake T, Yarita T, Aoyagi Y, Numata M, Takatsu A. Evaluation of the performance of 57 Japanese participating laboratories by two types of z-scores in proficiency test for the quantification of pesticide residues in brown rice. Anal Bioanal Chem 2014; 406:7337-44. [DOI: 10.1007/s00216-014-8160-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 08/28/2014] [Accepted: 09/03/2014] [Indexed: 11/25/2022]
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20
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Ertaş A, Boğa M, Yılmaz MA, Yeşil Y, Haşimi N, Kaya MŞ, Temel H, Kolak U. Chemical compositions by using LC-MS/MS and GC-MS and biological activities of Sedum sediforme (Jacq.) Pau. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:4601-4609. [PMID: 24773044 DOI: 10.1021/jf500067q] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this research, the chemical composition and biological activities of various extracts obtained from whole parts of Sedum sediforme (Jacq.) Pau were compared. The amounts of total phenolic and flavonoid components in crude extracts were determined by expression as pyrocatechol and quercetin equivalents, respectively. All of the extracts (petroleum ether, acetone, methanol, and water) obtained from S. sediforme showed strong antioxidant activity in four tested methods. Particularly, the IC50 values of the methanol extract, which was the richest in terms of total phenolic and flavonoid contents, were found to be lower than those of α-tocopherol and BHT in β-carotene bleaching (9.78 ± 0.06 μg/mL), DPPH free radical scavenging (9.07 ± 0.07 μg/mL), and ABTS cation radical scavenging (5.87 ± 0.03 μg/mL) methods. Furthermore, the methanol extract of S. sediforme showed higher inhibition activity than galanthamine against acetyl- and butyryl-cholinesterase enzymes. Also, acetone and methanol extracts exhibited moderate antimicrobial activity against Candida albicans. The main constituents of fatty acid and essential oil were identified as palmitic acid (C16:0) (28.8%) and α-selinene (20.4%), respectively, by GC-MS. In the methanol extract of S. sediforme, quercetin, rutin, naringenin, and protocatechuic, p-coumaric, caffeic, and chlorogenic acids were detected and quantified by LC-MS/MS. Results of the current study showed that the methanol extract of S. sediforme may also be used as a food supplement.
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Affiliation(s)
- Abdulselam Ertaş
- Department of Pharmacognosy, Faculty of Pharmacy, Dicle University , 21280 Diyarbakır, Turkey
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