An efficient GC–IDMS method for determination of PBDEs and PBB in plastic materials

Binici, Burcu; Bílsel, Mine; Karakaş, Melis; Koyuncu, İkbal; Goren, Ahmet C.

doi:10.1016/j.talanta.2013.05.076

Cited by 29 publications

(18 citation statements)

References 28 publications

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“…1,[8][9][10] Compared with external or internal standard methods, IDMS generally delivers greater accuracy and precision. 28) Multiple factors, such as matrix effects and water-soaking time, can also be considered reasons for the difference between values. The uncertainties for NMIJ values were significantly smaller than the NIQR, and this result indicates that the NMIJ can analyze target pesticides more precisely than the participants.…”

Section: Comparison Of Consensus and Nmij Reference Valuesmentioning

confidence: 99%

Proficiency testing by the National Metrology Institute of Japan for quantification of pesticide residues in grain samples from 2012 to 2018

et al. 2019

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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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Section: Comparison Of Consensus and Nmij Reference Valuesmentioning

confidence: 99%

Proficiency testing by the National Metrology Institute of Japan for quantification of pesticide residues in grain samples from 2012 to 2018

et al. 2019

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“…Pre-treatment allows a complete dissolution of the polymer in an appropriate solvent, possibly at room temperature, in order to avoid the thermal degradation of BFR [11,12]. Alternatively, a solid-liquid extraction is often adopted along with a series of extraction procedures, such as those performed by shaking, ultrasonication, soxhlet, microwave extraction, pressurized solvent, and supercritical CO 2 [13][14][15][16][17]. In addition to GC-MS, other analytical techniques used after the sample pretreatment are high performance liquid chromatography coupled with MS or UV detector, infrared analysis, and GC with an electron capture detector [13,[18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Some Real Mixed Plastics from WEEE: A Focus on Chlorine and Bromine Determination by Different Analytical Methods

et al. 2016

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Bromine and chlorine are almost ubiquitous in waste of electrical and electronic equipment (WEEE) and the knowledge of their content in the plastic fraction is an essential step for proper end of life management. The aim of this study is to compare the following analytical methods: energy dispersive X-ray fluorescence spectroscopy (ED-XRF), ion chromatography (IC), ion-selective electrodes (ISEs), and elemental analysis for the quantitative determination of chlorine and bromine in four real samples taken from different WEEE treatment plants, identifying the best analytical technique for waste management workers. Home-made plastic standard materials with known concentrations of chlorine or bromine have been used for calibration of ED-XRF and to test the techniques before the sample analysis. Results showed that IC and ISEs, based upon dissolution of the products of the sample combustion, have not always achieved a quantitative absorption of the analytes in the basic solutions and that bromine could be underestimated since several oxidation states occur after combustion. Elemental analysis designed for chlorine determination is subjected to strong interference from bromine and required frequent regeneration and recalibration of the measurement cell. The most reliable method seemed to be the non-destructive ED-XRF. Calibration with home-made standards, having a similar plastic matrix of the samples, enabled us to carry out quantitative determinations, which have been revealed to be satisfactorily accurate and precise. In all the analyzed samples a total concentration of chlorine and/or bromine between 0.6 and 4 w/w% was detected, compromising the feasibility of a mechanical recycling and suggesting the exploration of an alternative route for managing these plastic wastes.

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“…The bottom-up approach was applied to obtain measurement uncertainty value [4, 14,16]. The sources for uncertainty were weighing of sample, calibration graph, trueness and precision.…”

Section: Measurement Uncertaintymentioning

confidence: 99%

Rapid and reliable 25-OH vitamin D2 and 25-OH vitamin D3 measurements by multitasker LC-MS/MS

Goren¹,

Şahin²,

Gumilcineli³

et al. 2018

J.Chem.Metrol.

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The 25-OH Vitamin D2 and 25-OH Vitamin D3 measurement method was validated using a Zivak Multitasker Fully Automated Sample Preparation and Injection System coupled to a MS detector. The current method incorporates all sample preparations, SPE clean up procedures, LC and MS facilities into an all in one system. This system can report patient data within 6 minutes including the SPE and Sample preparation and mass spectrometry analysis time. The correlation coefficient of the developed method was greater than 0.99 for measurands, 25-OHvitamin Ds, in the calibration range. The measurement uncertainty of the measurements were evaluated and found as 7.7 % and 7.6 % for 25-OH vitamin D2 and 25-OH-vitamin D3, respectively.

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An efficient GC–IDMS method for determination of PBDEs and PBB in plastic materials

Cited by 29 publications

References 28 publications

Proficiency testing by the National Metrology Institute of Japan for quantification of pesticide residues in grain samples from 2012 to 2018

Proficiency testing by the National Metrology Institute of Japan for quantification of pesticide residues in grain samples from 2012 to 2018

Characterization of Some Real Mixed Plastics from WEEE: A Focus on Chlorine and Bromine Determination by Different Analytical Methods

Rapid and reliable 25-OH vitamin D2 and 25-OH vitamin D3 measurements by multitasker LC-MS/MS

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