Spectrophotometric Determination of Fluoride in Groundwater Using Resorcin Blue Complexes

Barghouthi, Zaher; Amereih, Sameer

doi:10.4236/ajac.2012.39085

Cited by 23 publications

(18 citation statements)

References 13 publications

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“…To a known concentration of fluoride ions in aqueous media, 0.4 g of test sample was introduced and then the test solution was kept stirring for 1 hour. After that, the nanocomposites were centrifuged down and the supernatant solution was tested for fluoride concentration colorimetrically [20]. e pelleted sample was dried and calcined at 500°C for 24 hours to remove the adsorbed fluoride, and the material was reconstituted in a NaCl solution to regenerate the LEuH-Cl material through the "memory effect" method of hydrotalcites [7].…”

Section: Adsorption Experimentsmentioning

confidence: 99%

Layered Rare-Earth Hydroxide Unilameller Nanosheets: Synthesis, Characterization, and Adsorption

Omwoma

Odongo

Otieno

et al. 2020

Journal of Chemistry

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Unilameller nanosheets with a lateral dimension of one nanometer have been isolated from a colloidal solution of europium-containing layered rare-earth hydroxide (LRH) material by the flocculation method. The nanosheets were achieved by changing pH of the colloidal solution from 6.7 to 11.5. The resultant flocculated nanosheets show high efficiency in sorption of fluoride anions from aqueous media (40 mmol/g), providing a potentially useful sorbent material for water purification technology. The sorbent material is demonstrated to be reusable for at least ten times without a significant loss of adsorption efficiency. And the results fit the Langmuir adsorption curve, indicating the chemisorption nature of the nanosheets. Most importantly, the isolated nanosheets are expected to widen the applicability and flexibility in material synthesis using two-dimensional nanomaterials.

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Section: Adsorption Experimentsmentioning

confidence: 99%

Layered Rare-Earth Hydroxide Unilameller Nanosheets: Synthesis, Characterization, and Adsorption

Omwoma

Odongo

Otieno

et al. 2020

Journal of Chemistry

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“…Fluoride in drinking water has both beneficial and harmful to human health. The low concentration of fluoride in drinking water has been considered beneficial to prevent dental caries [1]. Long-term consumption of water containing the high concentration of fluoride leads to dental fluorosis [2,3].…”

Section: Introductionmentioning

confidence: 99%

“…The most common methods for fluoride assay are potentiometry using a fluoride selective electrode [5], ion chromatography method [6], and zirconium-alizarin method. Several other methods have been reported for the determination of fluoride in water, such as using resorcin blue complexes [1], using a complex of aluminum and xylenol orange (Al-XO) as a colored reagent [7], using capillary electrophoresis, using solvent extraction coupled to fluorometry [8,9]. Because of some advantages of spectrophotometric methods, such as accuracy, simplicity and reproducibility, we have been interested to design a new spectrophotometric method for the determination of trace amounts of fluoride in water.…”

Section: Introductionmentioning

confidence: 99%

Research on a new spectrophotometric method for determinating trace amounts of fluoride

Anh¹

2019

jst

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A new spectrophotometric method for determinating trace amounts of fluoride has been introduced in this article. The principle of the method is based on the reaction of fluoride with a complex of aluminum ion and xylenol orange reagent (Al-XO). The concentration of fluoride in water is determined by measuring the red color of the Al-XO complex at 555 nm or measuring the yellow color of the XO reagent at 430 nm. The factors affecting the method for the determination of fluoride were examined. At the optimum condition, the limit of quantitation of this method is 0.08-2.1 mg/L. Based on an analysis of fluoride in the actual samples, the error of the method is less than 6%. A new point of this article is that this is the first time the type of calibration curve graph A = f (logC) in the spectrophotometric method (where: A – absorption; log - logarithm; C – concentration of fluoride) has been used in the world.

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“…For example, fluoride (F – ) at about 1 mg L −1 concentration has many favorable effects on the body, including preventing tooth decay and treating osteoporosis . However, higher levels of F – in water and food are of health concerns . Dental and skeletal fluorosis has been reported in people who consume drinking water containing high levels of fluoride (5 mg L −1 ) .…”

Section: Introductionmentioning

confidence: 99%

“…However, higher levels of F – in water and food are of health concerns . Dental and skeletal fluorosis has been reported in people who consume drinking water containing high levels of fluoride (5 mg L −1 ) . In dental fluorosis, the natural integrity of the enamel is decreased and leads to tooth breakage.…”

Section: Introductionmentioning

confidence: 99%

Potassium permanganate–glutaraldehyde chemiluminescence system catalyzed by gold nanoprisms toward selective determination of fluoride

Abolhasani

Ghorbani-Kalhor

2015

Luminescence

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Gold and silver nanoparticles (NPs) are shown to exert a positive effect on the chemiluminescence (CL) reaction of permanganate aldehydes. Interestingly, between various shapes examined, Au nanoprisms have the highest beneficial effect. This effect is even more notable in the presence of sodium dodecyl sulfate (SDS) surfactant. UV-vis spectra and transmission electron microscopy were used to characterize the NP shapes and sizes. Furthermore, it was observed that iron(III) ions can slightly increase CL emission of this system. This intensification is very effective in the presence of fluoride ions (F(-)). These observations form the basis of the method for the high sensitive determination of F(-) in the 6-1200 nmol L(-1) concentration range, with a detection limit of 2.1 nmol L(-1). The proposed method has good precision and was satisfactorily used in the selective determination of low concentrations of fluoride ion in real samples.

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Spectrophotometric Determination of Fluoride in Groundwater Using Resorcin Blue Complexes

Abstract: ABSTRACT, and 101.1 respectively.

Cited by 23 publications

References 13 publications

Layered Rare-Earth Hydroxide Unilameller Nanosheets: Synthesis, Characterization, and Adsorption

Layered Rare-Earth Hydroxide Unilameller Nanosheets: Synthesis, Characterization, and Adsorption

Research on a new spectrophotometric method for determinating trace amounts of fluoride

Potassium permanganate–glutaraldehyde chemiluminescence system catalyzed by gold nanoprisms toward selective determination of fluoride

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