Determination of fluoride by an ion chromatography system using the preconcentration on nanometer-size zirconia

Hang, Yiping; Liu, Jun‐Min

doi:10.1134/s1061934807060159

Cited by 17 publications

(6 citation statements)

References 16 publications

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“…The LOD achieved for F (0.13 ng mL −1 ) is comparable with the LOD obtained using H 2 SO 4 -activated nanometre-size zirconia as a solid sorbent prior to determination of fluoride by ion chromatography [ 49 ]. The LOD obtained for F is also superior by about two orders of magnitude to the LODs achieved using magnetic iron oxide nanoparticles prior to spectrophotometric determination of the analyte [ 51 ] and HS-SPME with carboxen-polydimethylsiloxane fibre prior to determination by gas chromatography-tandem mass spectrometry [ 53 ].…”

Section: Resultsmentioning

confidence: 62%

“…In analytical chemistry, for determination of fluoride, solid phase extraction (SPE) methods have been proposed with different adsorbents. For this purpose, SPE columns with charcoal [ 8 ], nanometre-size zirconia (ZrO 2 ) [ 49 ] and mini-column with polymer-zirconium complex (Zr(IV) with a hydrophilic with an iminodiacetic acid group) [ 50 ] were investigated. As an effective adsorbent, magnetic iron oxide nanoparticles (MIONs) [ 51 ] were used as well as headspace solid phase microextraction (HS-SPME) with carboxen-polydimethylsiloxane fibre (CAR/PDMS)) [ 52 , 53 ].…”

Section: Resultsmentioning

confidence: 99%

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Determination of fluorine in herbs and water samples by molecular absorption spectrometry after preconcentration on nano-TiO2 using ultrasound-assisted dispersive micro solid phase extraction

Krawczyk

Stanisz

2017

Anal Bioanal Chem

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This work presents ultrasound-assisted dispersive micro solid phase extraction (USA DMSPE) for preconcentration of fluorine (F) in water and herb samples. TiO2 nanoparticles (NPs) were used as an adsorbent. The determination with slurry sampling was performed via molecular absorption of calcium monofluoride (CaF) at 606.440 nm using a high-resolution continuum source electrothermal absorption spectrometry (HR-CS ET MAS). Several factors influencing the efficiency of the preconcentration technique, such as the amount of TiO2, pH of sample solution, ultrasonication and centrifugation time and TiO2 slurry solution preparation before injection to HR-CS ET MAS, were investigated in detail. The conditions of detection step (wavelength, calcium amount, pyrolysis and molecule-forming temperatures) were also studied. After extraction, adsorbent with the analyte was mixed with 200 μL of H2O to prepare a slurry solution. The concentration limit of detection was 0.13 ng mL−1. The achieved preconcentration factor was 7. The relative standard deviations (RSDs, %) for F in real samples were 3–15%. The accuracy of this method was evaluated by analyses of certified reference materials after spiking: INCT-MPH-2 (Mixed Polish Herbs), INCT-SBF-4 (Soya Bean Flour), ERM-CAO11b (Hard Drinking Water) and TMDA-54.5 (Lake Ontario Water). The measured F contents in reference materials were in satisfactory agreement with the added amounts, and the recoveries were found to be 97–109%. Under the developed extraction conditions, the proposed method has been successfully applied for the determination of F in real water samples (lake, sea, tap water) and herbs.

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Section: Resultsmentioning

confidence: 62%

Section: Resultsmentioning

confidence: 99%

Determination of fluorine in herbs and water samples by molecular absorption spectrometry after preconcentration on nano-TiO2 using ultrasound-assisted dispersive micro solid phase extraction

Krawczyk

Stanisz

2017

Anal Bioanal Chem

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“…Over the past few decades, traditional analytical methods have been exploited to detect fluoride ions, such as potentiometry, 8 atomic absorption spectrometry, 9 19 F NMR, 10 electrochemistry, 11 and ion chromatography. 12 However, these techniques deteriorate due to numerous downsides like the prerequisites of costly equipment, trained operators, and an extensive laboratory setup that limit their work for quantitative analysis studies by students in schools and researchers for field studies in endemic fluorosis areas. Colorimetric chemosensors prevail over these shortcomings and offer easy operation with high selectivity, sensitivity, and economical fluoride ion sensing methods.…”

Section: ■ Introductionmentioning

confidence: 99%

Fun with Smartphones: Handy Solution for Quantification of Debilitating Fluoride Ions in Drinking Water

2022

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A smartphone-based digital imaging method has been successfully introduced in an undergraduate laboratory class to quantify fluoride ions in water. Students first synthesized the chemosensor (E)-2-(1-(6-nitro-2-oxo-2H-chromen-3-yl)ethylidene)-N-phenylhydrazine-1-carbothioamide (CT) via an eco-friendly and green microwave-assisted protocol and characterized the product using FTIR spectroscopy, HRMS, and NMR spectroscopy. Students are advised to quantify the colorimetric response of a chemosensor toward fluoride ion by a UV−vis spectrophotometer and smartphone with the preinstalled Color Picker Android application to read the output RGB values, simultaneously. The agreement of results from the developed smartphone-based colorimetry protocol with the conventional UV−vis method validated the feasibility of the smartphone as a new analytical tool for versatile, cheap, and prompt analysis of fluoride ions in real samples. Overall, the experiment develops a multidimensional understanding of green chemistry principles and atom economy as well as characterization techniques, data collection, calibration plots, Job's plot, and interpretation of results.

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“…This in turn makes its detection a tedious prospect. 12 Till date, a great variety of methods have been employed for the precise determination of Fin water, such as ISE (Ion Selective Electrode), 13 ion chromatography, 14 HR-ICP-MS (High Resolution Inductively Coupled Plasma Mass Spectrometry), 15 AAS (Atomic Absorption Spectroscopy), 16 MAS (Molecular Absorption Spectroscopy) 17 etc. However, most of these conventional methods are costly, time consuming and require sophisticated instruments and expert hands to process.…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive Optical Sensor for Selective Detection of Fluoride Level in Drinking Water: Methodology to Fabrication of Prototype Device

Chatterjee

Pan

Maji

et al. 2021

ACS Sustainable Chem. Eng.

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Excess consumption of fluoride through drinking water and its detrimental effects on human health have been a serious global concern. Therefore, frequent monitoring as well as quantitative determination of fluoride ion (F -) concentration in aqueous media is of vital importance. Herein, we have developed a facile and highly sensitive spectroscopic technique for selective detection of Fin aqueous media using aluminium phthalocyanine chloride (AlPc-Cl) as a sensor. The absorbance as well as steady-state fluorescence intensity of AlPc-Cl has been found to decrease in presence of Fwhich has been used as a marker for the determination of fluoride ion concentration in water. The structural change in AlPc-Cl after addition of Fhas been thoroughly studied by using 19 F NMR (Nuclear Magnetic Resonance) spectroscopy. Our detailed steady-state as well as time-resolved fluorescence studies reveal that the quenching mechanism is static in nature due to ground state complexation in between Fand AlPc-Cl molecules. The response of the sensor is found to be linear over the Fconcentration regime from 0 to 6 parts per million (ppm) with a detection limit of 0.05 ppm. Additionally, it shows an excellent selectivity as well as an insignificant change in sensitivity even in the presence of interfering iron and aluminium ions. Based on the detailed photophysical study, we have further developed a low cost and portable prototype device which shows an excellent sensitivity with the detection limit of 0.10 ppm. This prototype device has a high prospect for real-time monitoring of fluoride ion concentration especially in remote areas.

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Determination of fluoride by an ion chromatography system using the preconcentration on nanometer-size zirconia

Cited by 17 publications

References 16 publications

Determination of fluorine in herbs and water samples by molecular absorption spectrometry after preconcentration on nano-TiO2 using ultrasound-assisted dispersive micro solid phase extraction

Determination of fluorine in herbs and water samples by molecular absorption spectrometry after preconcentration on nano-TiO2 using ultrasound-assisted dispersive micro solid phase extraction

Fun with Smartphones: Handy Solution for Quantification of Debilitating Fluoride Ions in Drinking Water

Highly Sensitive Optical Sensor for Selective Detection of Fluoride Level in Drinking Water: Methodology to Fabrication of Prototype Device

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