Sodium biphenyl method for determination of covalently bound fluorine in organic compounds and biological materials

Venkateswarlu, P.

doi:10.1021/ac00244a028

Cited by 31 publications

(15 citation statements)

References 19 publications

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“…Besides various confined combustion methods, in determination of total fluoride in biological matrices there were also employed digestions with acid or alkali, fusion with alkali method or reduction with alkali metals in organic solvents [82]. As the example of the last mentioned option, can be the application of sodium biphenyl (SBP) in determination of covalently bound fluorine in organic compounds [87]. This method was successfully employed for the determination of PFOA in human plasma sample spiked with 10 mg · L −1 analyte, and extraction with ether prior to reaction with SBP.…”

Section: Determination Of Total Organic Fluorine (Tof)mentioning

confidence: 99%

“…A simple method of determination of a total content of fluoroorganic compounds can be also based on reported earlier defluorination with SBP [87], and determination of released fluoride after hydrolysis of the post-reaction mixture. 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.…”

Section: Determination Of Total Organic Fluorine (Tof)mentioning

confidence: 99%

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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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Section: Determination Of Total Organic Fluorine (Tof)mentioning

confidence: 99%

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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“…Developed method was evaluated for possibility of combination with a defluorination process using SBP. Detailed usage of SBP was described elsewhere 41 and the procedure of defluorination, which was followed here, is described in Section 2.3. Three perfluorocarboxylic acids (PFCA) of various molecule sizes (C8, C10 and C12‐PFCA) were used here as model fluoroorganic compounds.…”

Section: Resultsmentioning

confidence: 99%

Determination of fluoride as fluorosilane derivative using reversed‐phase HPLC with UV detection for determination of total organic fluorine

Musijowski

Szostek

Koc

et al. 2010

J of Separation Science

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A quantitative method for fluoride determination using RP HPLC and UV detection was developed. The method is based on the reaction of fluoride with triphenylhydroxysilane in highly acidic conditions and extraction of the reaction product into n-heptane. Chromatographic conditions as well as the derivatization parameters were optimized. LOQ for fluoride ion was evaluated as 0.25 μM (4.75 ppb) and linear range of response up to 75 μM (1.42 ppm) was obtained. The method was developed as a part of a procedure designed for the determination of total organic fluorine in natural waters, using SPE on a carbon sorbent and sodium biphenyl reagent for the defluorination reaction. LOD for a model compound, perfluorooctanoic acid, calculated for the complete procedure with 2000-fold preconcentration, is 20 ppt (n=4). Initial results show feasibility of total organic fluorine determination for environmental purposes.

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“…Organohalogen compounds are used as surface coating reagents, flame retardants, fire-proofing agents, and insecticides in various polymer and fine chemical fields. Although many analysis methods [1][2][3][4][5][6][7][8][9][10][11][12] of halogen elements in organohalogen compounds have been studied for a long time, it is very difficult to quantitatively determine the amount of halogen elements because of their volatile nature.…”

Section: Introductionmentioning

confidence: 99%

Determination of Halogen Elements in Volatile Organohalogen Compounds by the Wickbold Combustion Pretreatment Method and Ion Chromatography

2007

Bulletin of the Korean Chemical Society

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A quantitative analysis method of halogen elements in volatile organohalogen compounds was established by the Wickbold combustion pretreatment in an enclosed system and ion chromatography. The sample pretreatment parameters of Wickbold combustion were experimentally optimized, and using the determined optimal pretreatment parameters, the reproducibility was estimated by ion chromatography. As a comparison for real samples, NIST certified reference materials (CRMs) were analyzed for the recovery efficiency and reproducibility.

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Sodium biphenyl method for determination of covalently bound fluorine in organic compounds and biological materials

Cited by 31 publications

References 19 publications

Recent developments in methods for analysis of perfluorinated persistent pollutants

Recent developments in methods for analysis of perfluorinated persistent pollutants

Determination of fluoride as fluorosilane derivative using reversed‐phase HPLC with UV detection for determination of total organic fluorine

Determination of Halogen Elements in Volatile Organohalogen Compounds by the Wickbold Combustion Pretreatment Method and Ion Chromatography

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