Application of microextraction techniques for indirect spectrophotometric determination of fluorides in river waters

Sukhareva, O. Yu.; Mariychuk, Ruslan; Sukharev, S. N.; Delehan-Kokaiko, Svitlana; Kushtan, Stanislav

doi:10.1016/j.jenvman.2020.111702

Cited by 7 publications

(4 citation statements)

References 47 publications

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“…53 In a very recent report by Sukhareva et al, the interaction between fluoride and ion associate of Al(III) is utilized for the determination of fluoride in natural waters. 54…”

Section: Resultsmentioning

confidence: 99%

“…53 In a very recent report by Sukhareva et al, the interaction between fluoride and ion associate of Al(III) is utilized for the determination of fluoride in natural waters. 54 All of the literature indicated a need to check the possibility of using Al(III) in the form of AlCl 3 as a suppressing agent for fluoride in the estimation of Zr in U-Zr alloy. To test this, AlCl 3 was sequentially added to the solution of Zr-XO-HF in 0.25 M HCl.…”

Section: Selection Of the Masking Agentmentioning

confidence: 99%

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Method to Eliminate Fluoride Interference in the Spectrophotometric Estimation of Zirconium: Application to U–Zr Alloys

2022

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In the estimation of Zr by UV-visible spectrophotometric technique, fluoride interference is a decade old unsolved problem. The process of repeated fuming with strong acids is often used to remove fluoride from the solution in order to estimate Zr by spectrophotometry analysis. For the first time, in this work, a simple use of AlCl3 is reported as a suppressing reagent to eliminate the interference of fluoride in the estimation of Zr. Xylenol orange in HCl medium is used as a complexing reagent. Linearity in the datum acquired from absorbance at 551 nm (λmax) is achieved over the concentration range 0.25-4.5 µg mL-1 of Zr with a molar absorptivity of 35030 L.mol-1.cm-1 and Sandell’s sensitivity of 0.003 µg.cm-2. Zr is quantified in the variety of U-Zr alloys and various water samples by using spectrophotometric detection with a classical univariate calibration with suppressing of fluoride-interference through AlCl3. Results from this novel analytical method herein developed for the first time are compared with those achieved from gravimetric analysis.

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“…53 In a very recent report by Sukhareva et al, the interaction between fluoride and ion associate of Al(III) is utilized for the determination of fluoride in natural waters. 54…”

Section: Resultsmentioning

confidence: 99%

Section: Selection Of the Masking Agentmentioning

confidence: 99%

Method to Eliminate Fluoride Interference in the Spectrophotometric Estimation of Zirconium: Application to U–Zr Alloys

2022

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“…Spectroscopic determination of fluoride using chromophore-based reagents has been extensively studied. For instance, the use of complexes of flavonoid chrysin [ 25 ], aluminum complexes of triphenylmethane dyes [ 18 , 26 ], interaction of fluoride with Al(III)-salicylic aldehyde acylhydrazones [ 18 ], reaction with zirconium ions and SPADNS [ 27 ], coordination of Al(III) with Alizarin Red-S [ 28 ], Al-xylenol orange complex [ 29 ], and aluminum quinalizarin complex [ 30 ] are to mention a few fluoride extraction ways. In fact, the use of the aforementioned ligands would help in enhancing sensitivity and selectivity of fluoride extraction for the spectrophotometric determination.…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic Determination of Fluoride Using Eriochrome Black T (EBT) as a Spectrophotometric Reagent from Groundwater

G/Mariam

Diro

Asere

et al. 2021

International Journal of Analytical Chemistry

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Fluoride health problem is a great concern worldwide, most often as a result of groundwater intake. Thus, determination of fluoride is vital to take appropriate measures upon fluoride contamination of water. Potentiometric method of analysis is reliable for the determination of fluoride in various samples. In addition, spectroscopic methods are found important to quantify fluoride levels from water; however, several factors hinder its easier determination. Among the bottlenecks, the use of toxic chemicals and tedious steps in preparing chemicals (e.g., SPADNS method) are to mention a few. In this study, a spectrophotometric method was developed for the determination of fluoride from groundwater using Eriochrome Black T (EBT) as a spectroscopic reagent. Experimental parameters that influence the determination of fluoride including ligand type, kinetics, pH, and ligand-to-metal ratio were assayed. Evaluation of fluoride levels showed that Beer–Lambert’s law is obeyed in the range of 0.3–5.0 mg/L at 544 nm. The calibration curve, resulting in good linearity (R2 = 0.9997), was considered during quantitative analysis of the samples and in the spiking analysis. The limits of detection (LOD) and quantification (LOQ) of the method were found to be 0.19 and 0.64 mg/L, respectively. The precision studied in terms of intraday and interday at three concentration levels showed less than 5.4% RSD. Applicability of the method was investigated by analyzing groundwater samples spiked with fluoride standards, and satisfactory recoveries in the range of 98.18–111.4 were demonstrated. The developed spectrophotometric method has been successfully applied for fluoride determinations in groundwater samples. Thus, it could be used as an attractive alternative for the determination of fluoride from groundwater.

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“…Поведінка важких металів у системі ґрунт-рослина визначається багатьма чинниками, а саме: їх концентрацією і формою вмісту в ґрунті, вмістом гумуса, механічним і мінералогічним складом ґрунту, рН, рівнем окислювально-відновного потенціалу та біологічними особливостями рослин. Тому слід відмітити, що надходження важких металів у рослини наразі вивчено недостатньо [9,10].…”

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The concentration of heavy metals in the energy crops phytomass when grown in the conditions of Zhytomyr Polissia

2022

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The high level of anthropogenic pressure on agro-landscapes recently leads to an increased level of their contamination with heavy metals, which are among the most harmful chemical pollutants for the environment. Heavy metals are transmitted through trophic chains with a pronounced cumulative effect, in connection with which their toxicity can appear suddenly on individual links of trophic chains. The danger from heavy metals is determined by the fact that, unlike organic pollutants, they do not break down, but change from one form to another. Based on the results of the study, it was established that the accumulation of heavy metals by energy plants depended on the type of crop. Thus, it was proved that the concentration of heavy metals in energy crops plants when grown in the territory of radioactive contamination was within the limit of permissible concentrations. The lowest concentration of toxicants was noted when all energy crops were grown without fertilizers. The subject of the study was energy crops (Silhium perfoliatum L., Sorghum almum Parodi, Bunias orientalis L., Sida hermaphrodita Rusby, Miscanthus giganteus G.), heavy metals in plants, sod-podzolic sandy soil, mineral fertilizers. Therefore, the purpose of our research was to determine the phytomass of energy crops grown in areas contaminated with radionuclides as a result of the accident at the Chernobyl Nuclear Power Plant to determine the concentration of toxic substances. When performing the work, both general and special research methods were used: field – for conducting stationary and short-term field experiments, analytical – for determining the content of heavy metals in plants crops (Silhium perfoliatum L., Sorghum almum Parodi, Bunias orientalis L., Sida hermaphrodita Rusby, Miscanthus giganteus G.). The research was conducted during 2017−2020 on sod-podzolic soils in the territory of the village. Khrystynivka, Zhytomyr region, which belongs to the zone of unconditional (mandatory) resettlement (2nd zone of radioactive contamination). Prospects for further research will be aimed at establishing patterns of distribution of heavy metals in soil layers when growing energy crops. Key words: Silhium perfoliatum L., Sorghum almum Parodi, Bunias orientalis L., Sida hermaphrodita Rusby, Miscanthus giganteus G., lead, cadmium, copper, zinc.

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Application of microextraction techniques for indirect spectrophotometric determination of fluorides in river waters

Cited by 7 publications

References 47 publications

Method to Eliminate Fluoride Interference in the Spectrophotometric Estimation of Zirconium: Application to U–Zr Alloys

Method to Eliminate Fluoride Interference in the Spectrophotometric Estimation of Zirconium: Application to U–Zr Alloys

Spectroscopic Determination of Fluoride Using Eriochrome Black T (EBT) as a Spectrophotometric Reagent from Groundwater

The concentration of heavy metals in the energy crops phytomass when grown in the conditions of Zhytomyr Polissia

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