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Journal articles on the topic 'Fluoride Ion Detection'

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Published: 4 June 2021
Last updated: 6 September 2023

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1

Liu, Yinhong, Yuhan Wei, Yongshuang Bian, Shengjiao He, Xin Wang, Xin Liu, Chenglei Li, et al. "A 2-(benzo[d]thiazol-2-yl)phenol based on conjugated polymer: Highly selective colorimetric fluorescent chemosensor for F-depending on Si–O bond cleavage reaction." High Performance Polymers 32, no. 3 (July 28, 2019): 344–56. http://dx.doi.org/10.1177/0954008319866003.

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Design and synthesis of highly selective fluorine ion probes become particularly important owing to the specific role of fluorine ion in chemical and biomedical progresses. As a new-type of fluorescent material, conjugated polymers with unique photometric properties have been widely researched by scientists in the field of the fluorescence sensors. In this study, the polymer PBTPV-OSi containing benzothiazole moiety is synthesized via palladium-catalyzed Heck coupling reaction. This polymer not only exhibits good solubility in organic solvents but also shows high selectivity for fluorine ion detection in comparison to other anions. Upon addition of F− to PBTPV-OSi solution, Si–O cleavage of PBTPV-OSi leads to the fluorescence quenching of the polymer in tetrahydrofuran dramatically, and the detection limit is 8 × 10−6 mol/L. Moreover, besides detecting fluorine ion from organic phase, the probe can also effectively detect potassium fluoride from inorganic phase. More importantly, a naked-eye detectable chromogenic and fluorogenic dual response to fluorine ion (F−) can be visibly noted and the detection process of fluorine ion is relatively fast.
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2

Azua Jamari, Nor Laili, Arne Behrens, Andrea Raab, Eva M. Krupp, and Jörg Feldmann. "Plasma processes to detect fluorine with ICPMS/MS as [M–F]+: an argument for building a negative mode ICPMS/MS." Journal of Analytical Atomic Spectrometry 33, no. 8 (2018): 1304–9. http://dx.doi.org/10.1039/c8ja00050f.

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The paper describes that the 2nd ionisation potential and the difference in bond energy of a metal to fluorine bond and of a metal to oxygen bond are the most important parameters to form a metal fluoride ion for the detection of fluorine in ICPMS/MS.
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3

Jia, Jin Ming, and Bo Li. "Design of Harmful Ion Analyzer in Drinking Water." Applied Mechanics and Materials 421 (September 2013): 808–13. http://dx.doi.org/10.4028/www.scientific.net/amm.421.808.

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This paper describes the design of real-time detection of harmful ions for drinking water, mainly introduces the instrument of automatic liquid injection control mechanism and the signal sampling and processing system design and implementation. The dynamic monitoring analyzer can rapidly detect concentration domestic sewage and drinking water of various ions such as arsenic, fluorine. Test equipment mainly consists of automatic sampling software, signal sampling and processing system, wireless data transmission module. Through the instrument in practical application test of arsenic in drinking water, fluoride ion, the performance index analyzer. The detection results, simple operation, low cost, analyzer of strong pertinence, high detection precision, high degree of automation.
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4

Duly, Ellie B., Stephen R. Luney, Thomas R. Trinick, James M. Murray, and John E. A. Comer. "Validation of an ion selective electrode system for the analysis of serum fluoride ion." Journal of Automatic Chemistry 17, no. 6 (1995): 219–23. http://dx.doi.org/10.1155/s1463924695000344.

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A high impedance unit was developed for use with a fluoride/pH electrode system for the measurement of serum fluoride. The linearity, accuracy, precision and detection limit of the system is reported. At a pH of 1.55, the system was linear over a range of serum fluoride concentrations up to 100 μmol l-1, with a lower limit of detection of 0.3 μmol l-1. Recoveries at this pH were 94-105% in the range 2.6-100 μmol l-1. Within-run CVs ranged from 4.2% at a level of 2.3 μmol l-1to 1.2% at a level of 55.7 μmol l-1, while day-to-day CVs ranged from 12.8% at a level of 2.2 μmol l-1to 4.6% at a level of 51.7 μmol l-1. The system demonstrated a rapid response time and has the potential for a smaller sample size requirement with alternative electrode shape. Continued development of this unit into an automated fluoride ion selective electrode system is recommended, since the measurement of serial serum fluoride samples is of greatest importance in assessing the impact of new anaesthetic agents on renal function.
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5

Yuan, Xin, Sen Lin Tian, Ming Jiang, Rong Rong Miao, Qian Wang, and Jian Zhou. "Determination of Fluorine in the Atmosphere Surrounded the Yellow Phosphorous Enterprise Using Ion Chromatography." Applied Mechanics and Materials 507 (January 2014): 773–76. http://dx.doi.org/10.4028/www.scientific.net/amm.507.773.

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Ion chromatography (IC) method was applied to detection of fluorine in the atmosphere calm wind conditions at the area around the yellow phosphorus enterprise. The results indicated that the recovery of standard addition of Fluroide is 96.7%~100.6%. It gives a linear response of chromatographic peak height with respect to the fluoride in the range of 1~25 μg/mL, and the coefficient correlations R value is 0.9994. The concentration of Fluorine in the surrounding of yellow phosphorus enterprise ranging from 100~1500 m varies from 0.641~0.070 mg/m3. The relative standard deviation (RSD) of this method is between 2.10%~0.50%. This method is sensitivity and selectivity, low disturbance, and it is considered as a promising method for the detection of Fluorine surrounded yellow phosphorus enterprise.
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6

Appiah-Ntiamoah, Richard, Amutha Chinnappan, and Hern Kim. "A facile method to effectively combine plasmon enhanced fluorescence (PEF) and fluoride-Lewis acid based reactions to detect low concentrations of fluoride in solution." RSC Advances 6, no. 82 (2016): 78918–29. http://dx.doi.org/10.1039/c6ra13504h.

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7

Li, Lihong, Min Zhang, Kaijing Chang, Yu Kang, Guodong Ren, Xiaoyu Hou, Wen Liu, Haojiang Wang, Bin Wang, and Haipeng Diao. "A novel fluorescent off–on probe for the sensitive and selective detection of fluoride ions." RSC Advances 9, no. 55 (2019): 32308–12. http://dx.doi.org/10.1039/c9ra06342k.

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A sensitive and selective fluorescent off–on probe is developed for fluoride ion detection, and its applicability has been demonstrated by determining fluoride ions in real-water samples and toothpaste samples.
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8

Yue, Zizheng, and Wenlin Feng. "Fiber-optic Michelson interferometer based on α-Fe2O3/ZrO2 sensing membrane and its application in trace fluoride-ion detection." Zeitschrift für Naturforschung A 77, no. 3 (November 26, 2021): 269–78. http://dx.doi.org/10.1515/zna-2021-0278.

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Abstract In this work, a fiber-optic fluoride-ion-detection Michelson interferometer based on the thin-core fiber (TCF) and no-core fiber (NCF) coated with α-Fe2O3/ZrO2 sensing film is proposed and presented. The single-mode fiber (SMF) is spliced with the TCF and NCF in turn, and a waist-enlarged taper is spliced between them. Then, a silver film is plated on the end face of NCF to enhance the reflection. After the absorption of fluoride ion by the sensing film, the effective refractive index (RI) of the coated cladding will change, which leads to the regular red shift of the interference dip with the increasing fluoride-ion concentration. Thus, the fluoride-ion concentrations can be determined according to the corresponding dip wavelength shifts. The results show that the sensor has an excellent linear response (R 2 = 0.995) with good sensitivity (8.970 nm/ppm) when the fluoride-ion concentration is in the range of 0–1.5 ppm. The response time is about 15 s. The sensor has the advantage of good selectivity, good temperature and pH stabilities, and can be applied to detect fluoride ion effectively.
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9

Lefler, J. E., and M. M. Ivey. "Ion Chromatography Detection of Fluoride in Calcium Carbonate." Journal of Chromatographic Science 49, no. 8 (September 1, 2011): 582–88. http://dx.doi.org/10.1093/chrsci/49.8.582.

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10

Zhou, Ying, Jun Feng Zhang, and Juyoung Yoon. "Fluorescence and Colorimetric Chemosensors for Fluoride-Ion Detection." Chemical Reviews 114, no. 10 (March 25, 2014): 5511–71. http://dx.doi.org/10.1021/cr400352m.

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11

Calderón-Ortiz, Lorena K., Eric Täuscher, Erick Leite Bastos, Helmar Görls, Dieter Weiß, and Rainer Beckert. "Hydroxythiazole-Based Fluorescent Probes for Fluoride Ion Detection." European Journal of Organic Chemistry 2012, no. 13 (March 14, 2012): 2535–41. http://dx.doi.org/10.1002/ejoc.201200140.

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12

Das, Rituraj, Plaban J. Sarma, Abhishek Borborah, Sudhangshu P. Bharati, and Sanjeev P. Mahanta. "Revisiting the fluoride binding behaviour of dipyrrolylquinoxaline in aqueous medium: a copper ion mediated approach." New Journal of Chemistry 43, no. 8 (2019): 3447–53. http://dx.doi.org/10.1039/c8nj04913k.

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An ion detection methodology employing synergistic interaction between copper(ii) ions and fluoride with 2,3-dipyrrol-2′-yl-quinoxaline (SR1) is investigated with a particular target to detect fluoride in an aqueous environment.
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13

Shen, Xiao Sheng, Hai Yan Zhang, Yan Lin Li, and You Qiong Cai. "Determination of Fluoride in Antarctic Krill Euphausia superba Using Ion Chromatography." Advanced Materials Research 842 (November 2013): 210–15. http://dx.doi.org/10.4028/www.scientific.net/amr.842.210.

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A simple, rapid and accurate method for the determination of fluoride in Antarctic krill has been developed. The fluoride content in Antarctic krill was determined by ion chromatography. The method requires a simple sample clean-up procedure to remove the interfering Cl- from the hydrochloric acid extraction solution. The optimum extraction conditions of fluoride from Antarctic krill samples were obtained by adding 8mL of 1:11(v/v) hydrochloric acid solution and extracting for 60 min. Under these conditions, recoveries of fluoride from Euphausia superba and Penaeus vannamei were 97.9-105.6% and 95.1-101.9%, respectively. The limit of detection was 0.01mg/kg. The method was applied to the determination of fluoride in Antarctic krill. Key words: Fluoride, Antarctic krill, Ion chromatography
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14

Rahmawati, R., Bambang Purwono, and Sabirin Matsjeh. "A Naked-Eye Fluoride Ion Recognition Based Vanilin Derivative Chemosensors." Acta Chimica Asiana 2, no. 2 (August 12, 2019): 110. http://dx.doi.org/10.29303/aca.v2i2.16.

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Two new receptors S2 and S6 were designed and synthesized based on benzimidazole and azo-benzimidazole synthesized from vanillin for the colorimetric detection of fluoride ion. The presence of nitro group in S2 and azo in S6 makes –OH proton (binding site) acidic and therefore it could deprotonate with addition of basic anion such as fluoride. Hydroxyl (–OH) functionality which detects basic fluoride ions via hydrogen-bonding mechanism wich is mechanism involved in the color change of receptor R2 and R6, its mean that initial hydrogen bond formation of F− ion with –OH group.
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15

Tarai, Arup, and Jubaraj B. Baruah. "Study on divalent copper, nickel and zinc model complexes for fluoride ion detection." RSC Advances 5, no. 100 (2015): 82144–52. http://dx.doi.org/10.1039/c5ra18559a.

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A series of mononuclear hydroxyaromatic oxime metal complexes were synthesized for detection of fluoride ion and shown that the spectral signals of such complexes depend on the electronic configuration of the metal ion.
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16

Yu, Xinling, Linlin Yang, Tingting Zhao, Ruilong Zhang, Liang Yang, Changlong Jiang, Jun Zhao, Bianhua Liu, and Zhongping Zhang. "Multicolorful ratiometric-fluorescent test paper for determination of fluoride ions in environmental water." RSC Advances 7, no. 84 (2017): 53379–84. http://dx.doi.org/10.1039/c7ra09972j.

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17

Lyaruu, D. M., W. J. Lenglet, J. H. Wöltgens, and A. L. Bronckers. "Micro-PIGE determination of fluorine distribution in developing hamster tooth germs." Journal of Histochemistry & Cytochemistry 37, no. 5 (May 1989): 581–87. http://dx.doi.org/10.1177/37.5.2703697.

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A micro-PIGE (Proton-Induced gamma-ray Emission) technique based on the delayed 5/2+----1/2+ nuclear transition of fluorine (E gamma = 197 keV, t1/2 = 87 ns) emitted after 19F(p,p', gamma)19F reaction was used to detect and study the distribution of fluorine in the developing enamel organ during pre-eruptive stages, i.e., the transitional to early maturation stages of enamel formation in neonatal hamsters administered a single IP dose of sodium fluoride (20 mg NaF/kg body weight). The aforementioned nuclear reaction is unique for fluorine, and therefore detection of gamma-rays emanating from this reaction in a biological specimen implies a positive identification of fluorine at that particular site. Calcium and phosphorus X-rays were also recorded and used as parameters for assessment of the relationship between the degree of mineralization and fluoride incorporation into the enamel organ. The highest fluorine concentration in the enamel organ was recorded in the dentin near the dentin-enamel junction (DEJ). In the enamel, the highest concentration of fluorine was found to be associated with the more mature areas of the enamel near the DEJ, but gradually decreased in the direction of the enamel surface. Fluorine was not detected in the control germs. These results suggest that administration of fluoride in high doses during the pre-eruptive stages of enamel formation leads to incorporation of the ion into the forming dentin and enamel mineral, and that the enamel matrix does not seem to bind fluoride avidly.
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18

Pegu, Rupa, Rajesh Mandal, Ankur Kanti Guha, and Sanjay Pratihar. "A selective ratiometric fluoride ion sensor with a (2,4-dinitrophenyl)hydrazine derivative of bis(indolyl) methane and its mode of interaction." New Journal of Chemistry 39, no. 8 (2015): 5984–90. http://dx.doi.org/10.1039/c4nj02223h.

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An easy-to-synthesis chemosensor was synthesized and employed as a selective optical chemosensor for fluoride through naked eye detection, which allow us to detect and estimate the concentration of fluoride ion accurately up to 2 μM via ratiometric responses.
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19

Chakraborty, Nilanjan, Arijit Chakraborty, and Suman Das. "Hydrazone derivative of 2-hydroxyquinoline-3-carbaldehyde: an efficient anionic and cationic sensor." Canadian Journal of Chemistry 98, no. 12 (December 2020): 779–86. http://dx.doi.org/10.1139/cjc-2020-0108.

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A hydrazone (1) based on 2-hydroxyquinoline-3-carbaldehyde was synthesized and its anion and cation detection ability were studied. It could detect both fluoride in acetonitrile selectively among anions and copper ions in semiaqueous medium among cations. The addition of fluoride ion to the acetonitrile solution of the receptor produced a sharp colour change from light yellow to bluish green. The corresponding UV–vis measurements showed a red shift of the band of receptor 1 for fluoride and a blue shift of the band for copper ions. The fluorescence intensity of the receptor 1 got quenched with both fluoride and copper ions. The detection limits for both the ions are in order of micromolar level. The practical applications of fluoride detection were extended to oral care products.
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20

Tipping, William J., Liam T. Wilson, Sonja K. Blaseio, Nicholas C. O. Tomkinson, Karen Faulds, and Duncan Graham. "Ratiometric sensing of fluoride ions using Raman spectroscopy." Chemical Communications 56, no. 92 (2020): 14463–66. http://dx.doi.org/10.1039/d0cc05939k.

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21

Viswanathan, Thamodharan, and Nallasamy Palanisami. "Ferrocene-appended boronated ester: effect of cyanovinylene group on the nonlinear optical properties and colorimetric detection of fluoride ion." New Journal of Chemistry 45, no. 28 (2021): 12509–18. http://dx.doi.org/10.1039/d1nj01652k.

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22

Mahapatra, Ajit Kumar, Parthasarathi Karmakar, Jagannath Roy, Srimanta Manna, Kalipada Maiti, Prithidipa Sahoo, and Debasish Mandal. "Colorimetric and ratiometric fluorescent chemosensor for fluoride ions based on phenanthroimidazole (PI): spectroscopic, NMR and density functional studies." RSC Advances 5, no. 47 (2015): 37935–42. http://dx.doi.org/10.1039/c5ra05327g.

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23

Hijji, Yousef Mohammad, Hani Darwish Tabba, Rajeesha Rajan, Hamzeh Mohammad Abdel-Halim, Musa Ibrahim El-Barghouthi, and Hutaf Mustafa Baker. "Selective colorimetric molecular probe for cyanide ion detection in aqueous solution." European Journal of Chemistry 9, no. 4 (December 31, 2018): 338–46. http://dx.doi.org/10.5155/eurjchem.9.4.338-346.1777.

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5-Nitro-2-hydroxybenzaldehyde (1) demonstrated to be a sensitive, and a selective molecular probe for cyanide ion (CN-) in aqueous media. In acetonitrile, compound 1 shows sensitivity and selectivity for cyanide, acetate and fluoride, in comparison to other investigated anions using both visual and spectroscopic means. In aqueous solution, the color becomes intense yellow upon addition of cyanide, while acetate showed this effect to a much lower extent. Significant spectral changes were also detected with the appearance of two new absorption bands at 358 and 387 nm. This was accompanied by concomitant intensity decrease for the band at 314 nm. Fluoride, dihydrogen phosphate, chloride, bromide, perchlorate, and azide showed negligible color and spectral changes for the probe in aqueous solutions. On the other hand, hydrogen sulfate caused fainting of the yellow color and gave a spectrum similar to that of the sensor in polar aprotic solvents. The cyanide ion was detected at micro molar levels in aqueous solutions with a stoichiometry of 1:1 for CN: probe in acetonitrile as the solvent. Cyanide, hydroxide, acetate, fluoride and dihydrogen phosphate showed identical changes to color and spectra, indicating a hydrogen bonding and a deprotonation mechanism.
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24

Sahu, Sutapa, Yeasin Sikdar, Riya Bag, Dilip K. Maiti, José Pedro Cerón–Carrasco, and Sanchita Goswami. "Visual detection of fluoride ion based on ICT mechanism." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 213 (April 2019): 354–60. http://dx.doi.org/10.1016/j.saa.2019.01.073.

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25

Rajamalli, P., and Edamana Prasad. "Low Molecular Weight Fluorescent Organogel for Fluoride Ion Detection." Organic Letters 13, no. 14 (July 15, 2011): 3714–17. http://dx.doi.org/10.1021/ol201325j.

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26

Choi, Ye Won, Jae Jun Lee, Ga Rim You, Sun Young Lee, and Cheal Kim. "Chromogenic naked-eye detection of copper ion and fluoride." RSC Advances 5, no. 105 (2015): 86463–72. http://dx.doi.org/10.1039/c5ra16301c.

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27

Qi, Yanyu, Xiaosong Cao, Yang Zou, and Chuluo Yang. "Color-tunable tetracoordinated organoboron complexes exhibiting aggregation-induced emission for the efficient turn-on detection of fluoride ions." Materials Chemistry Frontiers 5, no. 5 (2021): 2353–60. http://dx.doi.org/10.1039/d1qm00046b.

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28

Qi, Yanyu, Xiaosong Cao, Yang Zou, and Chuluo Yang. "Multi-resonance organoboron-based fluorescent probe for ultra-sensitive, selective and reversible detection of fluoride ions." Journal of Materials Chemistry C 9, no. 5 (2021): 1567–71. http://dx.doi.org/10.1039/d0tc05496h.

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29

Liu, Shi Hua, Qing Dan Yuan, Peng Chen, Xuan Li, and Di Shao. "Determination of the Content of Fluorine and Chlorine in Inorganic Insulation Materials by Ion Chromatography." Key Engineering Materials 768 (April 2018): 41–45. http://dx.doi.org/10.4028/www.scientific.net/kem.768.41.

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A fast and accurate method for simultaneous determination of the content of fluorine and chlorine in inorganic thermal insulation materials by ion chromatography was developed. The samples were cut into pieces of weight less than 40mg, washed with water as the extractant, heated for 30 min and then centrifuged, filtered through a 0.22 μm microporous membrane, and the cation was removed using a SEP-H column. The solution was rinsed with 20/30 mM KOH as the mobile phase, separated by anion exchange column and then detected using a conductivity detector. The mass concentration of fluorine and chlorine in the range of 0.1-10mg/L was linearly related to their peak area, the detection limit of fluorine was 0.030mg/Land the detection limit of chlorine was 0.016mg/L. The relative standard deviations (n=6) of the three typical inorganic insulating materials (glass wool, rock wool and mineral wool) were less than 2.0% and the rate of recovery of fluoride and chloride ion was between 97% and 101%.The method had good accuracy and recovery rate. The absolute error of the measured value between ion chromatography and the national standard was less than 0.20%.The results showed that the method was suitable for the determination of the content of fluorine and chlorine in inorganic thermal insulation materials
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30

Khunarj, Siraprapa, Woradorn Saijaroensakul, Wilailak Marom, Kittipong Chainok, Tanwawan Duangthongyou, Bussaba Pinchaipat, and Boontana Wannalerse. "Synthesis, Crystal Structure and Optical Properties of 3,5-Dihydroxyphenyl-5-(dimethylamino)naphthalene-1-sulfonate as a Fluorescence Sensor for Fluoride Ion Detection." Crystals 12, no. 12 (December 15, 2022): 1836. http://dx.doi.org/10.3390/cryst12121836.

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3,5-Dihydroxyphenyl-5-(dimethylamino)naphthalene-1-sulfonate, also referred to as sensor R1, was synthesized and characterized by 1H- and 13C-NMR, IR, HRMS, and single-crystal X-ray diffraction. Connections in the packing crystal structure of sensor R1 occur through hydrogen bonding interactions. However, no π-π stacking interactions between molecules of sensor R1 were observed. Addition of fluoride ion to a solution of sensor R1 resulted in the appearance of a new absorption band at 310 nm, which corresponded to the deprotonated species, and quenching of the peak at an emission wavelength of 562 nm. For the addition of other anions, there was a slight decrease in corresponding peaks in the UV-visible and emission spectra of sensor R1. According to the 1H-NMR study, the aromatic proton resonances of sensor R1 shifted upfield when adding fluoride ion. Analysis of the solutions prepared using Job’s method revealed that the complexation ratio of the complex formed between sensor R1 and fluoride ion was 1:1. The Stern−Volmer quenching constant (Ksv) between sensor R1 and fluoride ion was characterized as 7157 M−1.
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31

Boxi, Siddhartha Sankar, and Santanu Paria. "Fluorometric selective detection of fluoride ions in aqueous media using Ag doped CdS/ZnS core/shell nanoparticles." Dalton Transactions 45, no. 2 (2016): 811–19. http://dx.doi.org/10.1039/c5dt04065e.

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32

Ye, Hongli, Lukai Zhao, Xinghui Ren, Youqiong Cai, and Hai Chi. "“Switch-Off-On” Detection of Fe3+ and F− Ions Based on Fluorescence Silicon Nanoparticles and Their Application to Food Samples." Nanomaterials 12, no. 2 (January 10, 2022): 213. http://dx.doi.org/10.3390/nano12020213.

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An approach to the detection of F− ions in food samples was developed based on a “switch-off-on” fluorescence probe of silicon nanoparticles (SiNPs). The fluorescence of the synthetic SiNPs was gradually quenched in the presence of Fe3+ ion and slightly recovered with the addition of F− ion owing to the formation of a stable and colorless ferric fluoride. The fluorescence recovery exhibited a good linear relationship (R2 = 0.9992) as the concentration of F− ion increased from 0 to 100 μmol·L−1. The detection limit of the established method of F− ion was 0.05 μmol·L−1. The recovery experiments confirmed the accuracy and reliability of the proposed method. The ultraviolet–visible spectra, fluorescence decays, and zeta potentials evidenced the fluorescence quenching mechanism involving the electron transfer between the SiNPs and Fe3+ ion, while the fluorescence recovery resulted from the formation of ferric fluoride. Finally, SiNPs were successfully applied to detect F− ions in tap water, Antarctic krill, and Antarctic krill powder.
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33

Saravanan, Chinnusamy, Shanmugam Easwaramoorthi, and Leeyih Wang. "Colorimetric detection of fluoride ion by 5-arylidenebarbituric acids: dual interaction mode for fluoride ion with single receptor." Dalton Transactions 43, no. 13 (2014): 5151. http://dx.doi.org/10.1039/c3dt52824c.

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34

Wang, Yue, Run Zhang, Renfeng Song, Ke Guo, Qingtao Meng, Huan Feng, Chunying Duan, and Zhiqiang Zhang. "Fluoride-specific fluorescence/MRI bimodal probe based on a gadolinium(iii)–flavone complex: synthesis, mechanism and bioimaging application in vivo." Journal of Materials Chemistry B 4, no. 46 (2016): 7379–86. http://dx.doi.org/10.1039/c6tb02384c.

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35

Ghosh, Debanjana, Shannon Rhodes, Karena Hawkins, Domonique Winder, Austin Atkinson, Weihua Ming, Clifford Padgett, Jeffrey Orvis, Karelle Aiken, and Shainaz Landge. "A simple and effective 1,2,3-triazole based “turn-on” fluorescence sensor for the detection of anions." New Journal of Chemistry 39, no. 1 (2015): 295–303. http://dx.doi.org/10.1039/c4nj01411a.

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36

Rahaman, Fazlur, Prabhat Gautam, Priti Gupta, and Subrata Mondal. "A Simple and Efficient Schiff Base Derived Chemosensor for Selective Detection of Fluoride Ion." Journal of University of Shanghai for Science and Technology 23, no. 09 (September 14, 2021): 646–55. http://dx.doi.org/10.51201/jusst/21/09551.

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A new thiazole substituted chemosensor 1 has been designed and synthesized for selective detection of fluoride ions. The chemosensor 1 was characterized by 1H NMR and 13C NMR. The absorption studies of chemosensor in DMF exhibits two peaks at 283 nm and 327 nm. The anion sensing behaviour of chemosensor 1 for various anions (I-, Cl-, Br-, NO3-, HSO4-, PF6-, ClO4-) in DMF were investigated by UV-vis spectroscopy. Chemosensor 1 exhibited high degree of selectivity for fluoride ions over other anions. A good linearity in the range of 16-133 μM with 6.12 μM limit of detection value (LOD) was observed.
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37

Kobos, R. K., S. D. Abbott, H. W. Levin, H. Kilkson, D. R. Peterson, and J. W. Dickinson. "Electrochemical determination of hemoglobin, hematocrit, and hemolysis." Clinical Chemistry 33, no. 1 (January 1, 1987): 153–58. http://dx.doi.org/10.1093/clinchem/33.1.153.

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Abstract Novel electrochemical methods have been developed for determination of total hemoglobin, hematocrit, and detection of hemolysis in whole blood. Hemoglobin is measured through its peroxidase activity, a fluoride ion-selective electrode being used to monitor the rate of fluoride ion production from the oxidation of an organofluorine compound. Results agree well with those obtained with the cyanmethemoglobin method (r = 0.970). Hematocrit is determined from the ratio of the sodium ion concentrations measured with an ion-selective electrode before and after lysis of the erythrocytes. Results by this and the microhematocrit method correlated well (r = 0.987). Hemolysis in a whole-blood sample is detected by using an oxygen electrode to measure the oxygen released when hemoglobin in plasma is oxidized.
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38

Arooj, Maleeha, Manzar Zahra, Muhammad Islam, Nadeem Ahmed, Amir Waseem, and Zahid Shafiq. "Coumarin based thiosemicarbazones as effective chemosensors for fluoride ion detection." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 261 (November 2021): 120011. http://dx.doi.org/10.1016/j.saa.2021.120011.

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39

Zhang, Xuan, Yasuhiro Shiraishi, and Takayuki Hirai. "Unmodified fluorescein as a fluorescent chemosensor for fluoride ion detection." Tetrahedron Letters 48, no. 50 (December 2007): 8803–6. http://dx.doi.org/10.1016/j.tetlet.2007.10.086.

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40

Liu, Xiu-Ming, Ya-Ping Li, Ying-Hui Zhang, Qiang Zhao, Wei-Chao Song, Jian Xu, and Xian-He Bu. "Ratiometric fluorescence detection of fluoride ion by indole-based receptor." Talanta 131 (January 2015): 597–602. http://dx.doi.org/10.1016/j.talanta.2014.08.017.

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41

Sathish, R. Sai, U. Sujith, G. Nageswara Rao, and C. Janardhana. "Fluoride ion detection by 8-hydroxyquinoline–Zr(IV)–EDTA complex." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 65, no. 3-4 (November 2006): 565–70. http://dx.doi.org/10.1016/j.saa.2005.12.011.

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42

Yadav, Pramod Kumar. "Search for Chemosensors for Fluoride Ions: A Highly Promising Area of Research." Academic Voices: A Multidisciplinary Journal 4 (March 28, 2015): 42–44. http://dx.doi.org/10.3126/av.v4i0.12356.

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In recent times, chemosensors for fluoride ions have attracted a great deal of attention. Fluoride ions play an important role in many biological, industrial and environmental processes and are associated with diseases like Alzeimer’s disease. This paper covers imidazole, indole, azo-phenol and benzohydrazide based chemosensors for F-ion with synthesis and detection methods.DOI: http://dx.doi.org/10.3126/av.v4i0.12356Academic Voices Vol.4 2014: 42-44
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43

Xu, Dan Hua, Shi Hua Liu, and Peng Chen. "Fluoride Determination by Ion Chromatography in Fluorocarbon Coatings." Key Engineering Materials 726 (January 2017): 50–54. http://dx.doi.org/10.4028/www.scientific.net/kem.726.50.

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A quantitative ion chromatographic analytical method for the determination of fluorine in fluorocarbon coatings is proposed. The extraction of the anions from the samples was performed using potassium hydroxide after centrifugation drying to dissolved at preference temperature. Using H column to remove large amounts of potassium ions in the solution。In paper describe the observed limits of detection and of quantitation in mg kg-1 and the mean relative standard deviation in percent This method is simple operation, less interference factors, fast analysis speed, the determination results accurate and reliable, with good repeatability and reproducibility.
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44

Adurty, Sunil, Lohith Karnam, Sundaresan Neelakantan Chittor, and Siva Kumar Belliraj. "Optical Sensing of Fluoride Through a Self-Organized Fluorescent Ensemble of Quinizarin-Al(III) Complex." Journal of AOAC INTERNATIONAL 99, no. 6 (November 1, 2016): 1636–41. http://dx.doi.org/10.5740/jaoacint.16-0045.

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Abstract A one-pot, cost-effective system for sensing fluoride ions using quinizarin as a novel chromophore is reported. Quinizarin complexes with Al(III) to form a self-organized turn-on fluorescence system in methanol. In the presence of fluoride ions, this system undergoes a subsequent ligand swap reaction with the fluoride ion and consequently the fluorescence turns off, delivering a sensitive route for the estimation of fluoride. This domino effect presents a sensitive and selective reaction system for the detection of fluoride ions in the concentration range 0.5–15 ppm. The study was performed using spectrophotometric and spectrofluorimetric techniques. Various analytical parameters such as pH, equilibration time, ambient temperature, and applicability of the method have been reported along with the study of the associated interfering ions.
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45

Jha, Gaurav, Anoop N., Abdur Rahaman, and Moloy Sarkar. "Fluoride ion sensing in aqueous medium by employing nitrobenzoxadiazole-postgrafted mesoporous silica nanoparticles (MCM-41)." Physical Chemistry Chemical Physics 17, no. 5 (2015): 3525–33. http://dx.doi.org/10.1039/c4cp05350h.

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46

Jakku, Ranjith Kumar, Nedaossadat Mirzadeh, Steven H. Privér, Govind Reddy, Anil Kumar Vardhaman, Giribabu Lingamallu, Rajiv Trivedi, and Suresh Kumar Bhargava. "Tetraphenylethylene-Substituted Bis(thienyl)imidazole (DTITPE), An Efficient Molecular Sensor for the Detection and Quantification of Fluoride Ions." Chemosensors 9, no. 10 (October 6, 2021): 285. http://dx.doi.org/10.3390/chemosensors9100285.

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Fluoride ion plays a pivotal role in a range of biological and chemical applications however excessive exposure can cause severe kidney and gastric problems. A simple and selective molecular sensor, 4,5-di(thien-2-yl)-2-(4-(1,2,2-triphenylvinyl)-phenyl)-1H-imidazole, DTITPE, has been synthesized for the detection of fluoride ions, with detection limits of 1.37 × 10−7 M and 2.67 × 10−13 M, determined by UV-vis. and fluorescence spectroscopy, respectively. The variation in the optical properties of the molecular sensor in the presence of fluoride ions was explained by an intermolecular charge transfer (ICT) process between the bis(thienyl) and tetraphenylethylene (TPE) moieties upon the formation of a N-H---F− hydrogen bond of the imidazole proton. The sensing mechanism exhibited by DTITPE for fluoride ions was confirmed by 1H NMR spectroscopic studies and density functional theory (DFT) calculations. Test strips coated with the molecular sensor can detect fluoride ions in THF, undergoing a color change from white to yellow, which can be observed with the naked eye, showcasing their potential real-world application.
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Misra, Rajneesh, Thaksen Jadhav, Bhausaheb Dhokale, and Shaikh M. Mobin. "Colorimetric and fluorimetric detection of fluoride and cyanide ions using tri and tetra coordinated boron containing chromophores." Dalton Transactions 44, no. 36 (2015): 16052–60. http://dx.doi.org/10.1039/c5dt02356d.

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Two organoboron based fluorophores pyrazabole 3 and BODIPY 4 have been designed and synthesized by the Pd-catalyzed Sonogashira cross-coupling reaction and successfully employed for fluoride and cyanide ion sensing.
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48

Alshammari, Alhulw H., Zahrah Alqahtani, Faiz Bukhari Mohd Suah, Syaza Atikah Nizar, Alan Dunbar, and Martin Grell. "Low-Cost, High-Sensitivity Detection of Waterborne Al3+ Cations and F− Anions via the Fluorescence Response of a Morin Derivative Dye." Engineering Proceedings 6, no. 1 (May 20, 2021): 29. http://dx.doi.org/10.3390/i3s2021dresden-10166.

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Morin dye is known as a cheap and readily available selective ‘off → on’ fluorescent sensitiser when immobilised in a phase transfer membrane for the detection of Al3+ ions. Here, a morin derivative, NaMSA, which readily dissolves in water with good long-term stability is used in conjunction with a fibre-optic transducer with lock-in detection to detect Al3+ in drinking water below the potability limit. The combination of a water-soluble dye and the fibre-optic transducer require neither membrane preparation nor a fluorescence spectrometer yet still display a high figure of merit. The known ability to recover morin-based Al3+ cation sensors selectively by exposure to fluoride (F−) anions is further developed, enabling a complementary sensing of either fluoride anions, or aluminium cations, using the same dye with a sub-micromolar limit-of-detection for both ions. The sensor performance parameters compare favourably to prior reports on both aqueous aluminium and fluoride ion sensing.
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Mondal, Subrata, Priti Gupta, Fazlur Rahaman, Prabhat Gautam, and I. C. Lekshmi. "Colorimetric and fluorimetric detection of fluoride ion using thiazole derived receptor." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 264 (January 2022): 120301. http://dx.doi.org/10.1016/j.saa.2021.120301.

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50

Kaur, Matinder, Min Ju Cho, and Dong Hoon Choi. "Chemodosimeter approach: Selective detection of fluoride ion using a diketopyrrolopyrrole derivative." Dyes and Pigments 103 (April 2014): 154–60. http://dx.doi.org/10.1016/j.dyepig.2013.12.006.

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