Determination of Total Organic Fluorine (TOF) in environmental samples using flow-injection and chromatographic methods

Trojanowicz, Marek; Musijowski, Jacek; Koc, Mariusz; Donten, Magdalena A.

doi:10.1039/c0ay00719f

Cited by 21 publications

(10 citation statements)

References 44 publications

(54 reference statements)

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“…The mass of unquantified organic fluorine is not unique; a study of surface water after a spill of fire retardant showed that the total mass of PFCs identified was significantly less than that the 19 F measured by NMR (Moody et al, 2001). There are other instances where for non-biological matrices EOF has occurred in significantly greater abundance than that identified by the commonly described PFCs (Trojanowicz et al, 2011). In comparison, EOF was 63% (n = 10) and 38% (n = 10) of TF, respectively, for two cetacean species .…”

Section: Tf and Eofmentioning

confidence: 98%

Historical trends of inorganic and organic fluorine in sediments of Lake Michigan

et al. 2014

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h i g h l i g h t sWe took 8 sediment cores and 27 ponar grabs from Lake Michigan in 2010. Samples were extracted for total fluorine, extractable fluorine and 25 PFCs. PFOS and PFOA are the predominant PFCs in sediment cores. PFBS and PFBA are appearing in upper sections at concentrations similar to PFOS and PFOA. TF and EOF concentrations are orders of magnitude higher than PFCs. a r t i c l e i n f o were measured in eight dated cores of sediment taken along with 27 surface sediments from Lake Michigan in 2010. Based on rates of sedimentation, total concentrations of PFCs ( P PFCs) reached a maximum in the later 1990s and early 2000s. This result is consistent with rapid changes in production and subsequent sedimentation. Perfluorooctanesulfonate (PFOS) and perfluorooctanoate (PFOA) are still the predominant PFCs in the cores, but in surface sediments, concentrations of perfluorobutane sulfonate (PFBS) and perfluorobutanoic acid (PFBA) are now occurring at concentrations comparable to those of PFOS and PFOA. This observation is consistent with shifts in patterns of production and use in the US and Canada. Concentrations of TF in sediments were greater than those of EOF. This result is consistent with a larger proportion of un-extractable fluorinated material in both surface sediments and in cores.

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Section: Tf and Eofmentioning

confidence: 98%

Historical trends of inorganic and organic fluorine in sediments of Lake Michigan

et al. 2014

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“…The attempts to determine the released fluoride using flow-injection analysis methods with potentiometric and fluorimetric detections did not allow the obtaining a satisfactory LOD [92], hence chromatographic methods were employed for this purpose. In procedures of determinations of PFCAs in natural waters, the first stage is sorption of analytes on appropriate non-polar sorbent.…”

Section: Determination Of Total Organic Fluorine (Tof)mentioning

confidence: 99%

“…A – blank without SBP, B – blank after defluorination with SBP and derivatization with TPSiOH, C – PFOA standard solution after defluorination and derivatization, D – river water sample after defluorination and derivatization. b Comparison of TOF values determined by HPLC (white bars) in samples of natural waters with the content of individual PFASs identified and quantified by the LC/MS method [92]. KW – tap water from Warsaw, KT – tap water from city Tarnow (Poland) , W1 – river water from Vistula , T1 – surface water from Tarnow, Z – well water from Tarnow…”

Section: Determination Of Total Organic Fluorine (Tof)mentioning

confidence: 99%

Recent developments in methods for analysis of perfluorinated persistent pollutants

Trojanowicz

Koc

2013

Microchim Acta

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Perfluoroalkyl substances (PFASs) are proliferated into the environment on a global scale and present in the organisms of animals and humans even in remote locations. Persistent organic pollutants of that kind therefore have stimulated substantial improvement in analytical methods. The aim of this review is to present recent achievements in PFASs determination in various matrices with different methods and its comparison to measurements of Total Organic Fluorine (TOF). Analytical methods used for PFASs determinations are dominated by chromatography, mostly in combination with mass spectrometric detection. However, HPLC may be also hyphenated with conductivity or fluorimetric detection, and gas chromatography may be combined with flame ionization or electron capture detection. The presence of a large number of PFASs species in environmental and biological samples necessitates parallel attempts to develop a total PFASs index that reflects the total content of PFASs in various matrices. Increasing attention is currently paid to the determination of branched isomers of PFASs, and their determination in food.FigureThe aim of this review is to present recent achievements in perfluoroalkyl substances (PFASs) determination in various matrices with different methods and its comparison to measurements of Total Organic Fluorine (TOF). Increasing attention is currently paid to the determination of branched isomers of PFASs, and their determination in food.

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“…For measurements of the diffusion coefficient the flow injection method [33,34] is used. The injection zone of the ligand in a cylindrical capillary has a shape of a small cylinder.…”

Section: Determination Of the Association Constant For Ligand-proteinmentioning

confidence: 99%

A method for rapid screening of interactions of pharmacologically active compounds with albumin

Majcher

Lewandrowska

Herold

et al. 2015

Analytica Chimica Acta

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Determination of Total Organic Fluorine (TOF) in environmental samples using flow-injection and chromatographic methods

Cited by 21 publications

References 44 publications

Historical trends of inorganic and organic fluorine in sediments of Lake Michigan

Historical trends of inorganic and organic fluorine in sediments of Lake Michigan

Recent developments in methods for analysis of perfluorinated persistent pollutants

A method for rapid screening of interactions of pharmacologically active compounds with albumin

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