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Homeira Ebrahimzadeh - One of the best experts on this subject based on the ideXlab platform.
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gelatin Sodium Triphosphate hydrogel electrospun nanofiber mat as a novel nanosorbent for microextraction in packed syringe of la3 and tb3 ions prior to their determination by icp oes
Reactive & Functional Polymers, 2020Co-Authors: Ebrahim Moradi, Zahra Mehrani, Homeira EbrahimzadehAbstract:Abstract In the present study, the novel Gelatin/Sodium Triphosphate Hydrogel Nanofiber Mat (GT/STP HNFM) was fabricated using the electrospinning strategy. Owing to the formation of ionic complex between STP and GT, the water stability of synthesized nanofiber increased, thereafter, the synthesized water-insoluble nanofiber was applied as a novel nanosorbent in Microextraction in Packed Syringe (MEPS) method, using for the preconcentration of La3+ and Tb3+ in environmental and industrial water samples to the detection of them by an Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The characterization of nanosorbent was performed and the effect of main parameters on adsorption performance were investigated. Under the optimum condition, the method showed a good linearity ranging from 1 to 500 ng mL−1 with a correlation coefficient superior to 0.998. Additionally, the low detection limits (0.1–0.2 ng mL−1) revealed good sensitivity of the proposed method. Finally, the MESP-ICP-OES method was applied for the determination of La3+ and Tb3+ in environmental and industrial water samples with relative recoveries (RRs) ranging from 85 to 102% and Relative Standard Deviations (RSDs) lower than 2.7%. The outcome of this study revealed an effective method for the extraction and recovery of La3+ and Tb3+ from aqueous solutions using a non-toxic, inexpensive, and efficient nanosorbent.
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Gelatin/Sodium Triphosphate hydrogel electrospun nanofiber mat as a novel nanosorbent for microextraction in packed syringe of La3+ and Tb3+ ions prior to their determination by ICP-OES
Reactive and Functional Polymers, 2020Co-Authors: Ebrahim Moradi, Zahra Mehrani, Homeira EbrahimzadehAbstract:Abstract In the present study, the novel Gelatin/Sodium Triphosphate Hydrogel Nanofiber Mat (GT/STP HNFM) was fabricated using the electrospinning strategy. Owing to the formation of ionic complex between STP and GT, the water stability of synthesized nanofiber increased, thereafter, the synthesized water-insoluble nanofiber was applied as a novel nanosorbent in Microextraction in Packed Syringe (MEPS) method, using for the preconcentration of La3+ and Tb3+ in environmental and industrial water samples to the detection of them by an Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The characterization of nanosorbent was performed and the effect of main parameters on adsorption performance were investigated. Under the optimum condition, the method showed a good linearity ranging from 1 to 500 ng mL−1 with a correlation coefficient superior to 0.998. Additionally, the low detection limits (0.1–0.2 ng mL−1) revealed good sensitivity of the proposed method. Finally, the MESP-ICP-OES method was applied for the determination of La3+ and Tb3+ in environmental and industrial water samples with relative recoveries (RRs) ranging from 85 to 102% and Relative Standard Deviations (RSDs) lower than 2.7%. The outcome of this study revealed an effective method for the extraction and recovery of La3+ and Tb3+ from aqueous solutions using a non-toxic, inexpensive, and efficient nanosorbent.
Ebrahim Moradi - One of the best experts on this subject based on the ideXlab platform.
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gelatin Sodium Triphosphate hydrogel electrospun nanofiber mat as a novel nanosorbent for microextraction in packed syringe of la3 and tb3 ions prior to their determination by icp oes
Reactive & Functional Polymers, 2020Co-Authors: Ebrahim Moradi, Zahra Mehrani, Homeira EbrahimzadehAbstract:Abstract In the present study, the novel Gelatin/Sodium Triphosphate Hydrogel Nanofiber Mat (GT/STP HNFM) was fabricated using the electrospinning strategy. Owing to the formation of ionic complex between STP and GT, the water stability of synthesized nanofiber increased, thereafter, the synthesized water-insoluble nanofiber was applied as a novel nanosorbent in Microextraction in Packed Syringe (MEPS) method, using for the preconcentration of La3+ and Tb3+ in environmental and industrial water samples to the detection of them by an Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The characterization of nanosorbent was performed and the effect of main parameters on adsorption performance were investigated. Under the optimum condition, the method showed a good linearity ranging from 1 to 500 ng mL−1 with a correlation coefficient superior to 0.998. Additionally, the low detection limits (0.1–0.2 ng mL−1) revealed good sensitivity of the proposed method. Finally, the MESP-ICP-OES method was applied for the determination of La3+ and Tb3+ in environmental and industrial water samples with relative recoveries (RRs) ranging from 85 to 102% and Relative Standard Deviations (RSDs) lower than 2.7%. The outcome of this study revealed an effective method for the extraction and recovery of La3+ and Tb3+ from aqueous solutions using a non-toxic, inexpensive, and efficient nanosorbent.
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Gelatin/Sodium Triphosphate hydrogel electrospun nanofiber mat as a novel nanosorbent for microextraction in packed syringe of La3+ and Tb3+ ions prior to their determination by ICP-OES
Reactive and Functional Polymers, 2020Co-Authors: Ebrahim Moradi, Zahra Mehrani, Homeira EbrahimzadehAbstract:Abstract In the present study, the novel Gelatin/Sodium Triphosphate Hydrogel Nanofiber Mat (GT/STP HNFM) was fabricated using the electrospinning strategy. Owing to the formation of ionic complex between STP and GT, the water stability of synthesized nanofiber increased, thereafter, the synthesized water-insoluble nanofiber was applied as a novel nanosorbent in Microextraction in Packed Syringe (MEPS) method, using for the preconcentration of La3+ and Tb3+ in environmental and industrial water samples to the detection of them by an Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The characterization of nanosorbent was performed and the effect of main parameters on adsorption performance were investigated. Under the optimum condition, the method showed a good linearity ranging from 1 to 500 ng mL−1 with a correlation coefficient superior to 0.998. Additionally, the low detection limits (0.1–0.2 ng mL−1) revealed good sensitivity of the proposed method. Finally, the MESP-ICP-OES method was applied for the determination of La3+ and Tb3+ in environmental and industrial water samples with relative recoveries (RRs) ranging from 85 to 102% and Relative Standard Deviations (RSDs) lower than 2.7%. The outcome of this study revealed an effective method for the extraction and recovery of La3+ and Tb3+ from aqueous solutions using a non-toxic, inexpensive, and efficient nanosorbent.
Kazuhiko Kandori - One of the best experts on this subject based on the ideXlab platform.
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Synthesis and characterization of Ti(IV)-substituted calcium hydroxyapatite particles by forced hydrolysis of Ca(OH)_2-Na_5P_3O_10-TiCl_4 mixed solution
Colloid and Polymer Science, 2014Co-Authors: Kazuhiko Kandori, Minori MitsuiAbstract:Ti(IV)-substituted calcium hydroxyapatite (TiHap) particles were prepared by aging Ca(OH)_2, TiCl_4, and Sodium Triphosphate (Sodium tripolyphosphate, Natpp: Na_5P_3O_10) mixed solution at 100 °C for 18 h. The ellipsoidal secondary TiHap particles with ca. 100∼150 nm in length composing by aggregation of small ellipsoidal primary particles with ca. 20 nm in length were produced at atomic ratio of Ti/(Ca+Ti) [X_Ti]≦0.2. The in situ IR spectra of these TiHap particles exhibited very small bulk OH^− band at 3,570 cm^−1. This result indicated that the TiHap particles were formed by aggregation of fine primary particles and OH^− ions along with c -axis in the primary particles were disordered. The TiHap particles with Ca/P atomic ratio larger than theoretical value of 1.67 did not exhibit surface P–OH groups at 3,659 and 3,682 cm^−1. The diffuse reflectance UV spectra of TiHap particles revealed that these particles have a UV absorption property, especially fabricated at X_Ti = 0.1. The particles prepared at X_Ti = 0.6 and 0.8 were amorphous and nanoparticles with 5∼10 nm in diameter, but those precipitated at X_Ti = 1.0 were poorly crystallized anataze-type TiO_2 nanoparticles.
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Synthesis and characterization of Ti(IV)-substituted calcium hydroxyapatite particles by forced hydrolysis of Ca(OH)2-Na5P3O10-TiCl4 mixed solution
Colloid and Polymer Science, 2014Co-Authors: Kazuhiko Kandori, Minori MitsuiAbstract:Ti(IV)-substituted calcium hydroxyapatite (TiHap) particles were prepared by aging Ca(OH)2, TiCl4, and Sodium Triphosphate (Sodium tripolyphosphate, Natpp: Na5P3O10) mixed solution at 100 °C for 18 h. The ellipsoidal secondary TiHap particles with ca. 100∼150 nm in length composing by aggregation of small ellipsoidal primary particles with ca. 20 nm in length were produced at atomic ratio of Ti/(Ca+Ti) [XTi]≦0.2. The in situ IR spectra of these TiHap particles exhibited very small bulk OH− band at 3,570 cm−1. This result indicated that the TiHap particles were formed by aggregation of fine primary particles and OH− ions along with c-axis in the primary particles were disordered. The TiHap particles with Ca/P atomic ratio larger than theoretical value of 1.67 did not exhibit surface P–OH groups at 3,659 and 3,682 cm−1. The diffuse reflectance UV spectra of TiHap particles revealed that these particles have a UV absorption property, especially fabricated at XTi = 0.1. The particles prepared at XTi = 0.6 and 0.8 were amorphous and nanoparticles with 5∼10 nm in diameter, but those precipitated at XTi = 1.0 were poorly crystallized anataze-type TiO2 nanoparticles.
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Preparation and Characterization of Spherical and Balloon-Like Calcium Phosphate Particles
Bulletin of the Chemical Society of Japan, 2008Co-Authors: Kazuhiko Kandori, Kiri Tada, Masao Fukusumi, Yoshiaki MorisadaAbstract:Calcium phosphate particles were prepared by aging a solution of CaCl2 and Sodium Triphosphate (Sodium tripolyphosphate, Natpp: Na5P3O10) at 100–150 °C for 16 h in a Teflon-lined screw-capped Pyrex...
Zahra Mehrani - One of the best experts on this subject based on the ideXlab platform.
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gelatin Sodium Triphosphate hydrogel electrospun nanofiber mat as a novel nanosorbent for microextraction in packed syringe of la3 and tb3 ions prior to their determination by icp oes
Reactive & Functional Polymers, 2020Co-Authors: Ebrahim Moradi, Zahra Mehrani, Homeira EbrahimzadehAbstract:Abstract In the present study, the novel Gelatin/Sodium Triphosphate Hydrogel Nanofiber Mat (GT/STP HNFM) was fabricated using the electrospinning strategy. Owing to the formation of ionic complex between STP and GT, the water stability of synthesized nanofiber increased, thereafter, the synthesized water-insoluble nanofiber was applied as a novel nanosorbent in Microextraction in Packed Syringe (MEPS) method, using for the preconcentration of La3+ and Tb3+ in environmental and industrial water samples to the detection of them by an Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The characterization of nanosorbent was performed and the effect of main parameters on adsorption performance were investigated. Under the optimum condition, the method showed a good linearity ranging from 1 to 500 ng mL−1 with a correlation coefficient superior to 0.998. Additionally, the low detection limits (0.1–0.2 ng mL−1) revealed good sensitivity of the proposed method. Finally, the MESP-ICP-OES method was applied for the determination of La3+ and Tb3+ in environmental and industrial water samples with relative recoveries (RRs) ranging from 85 to 102% and Relative Standard Deviations (RSDs) lower than 2.7%. The outcome of this study revealed an effective method for the extraction and recovery of La3+ and Tb3+ from aqueous solutions using a non-toxic, inexpensive, and efficient nanosorbent.
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Gelatin/Sodium Triphosphate hydrogel electrospun nanofiber mat as a novel nanosorbent for microextraction in packed syringe of La3+ and Tb3+ ions prior to their determination by ICP-OES
Reactive and Functional Polymers, 2020Co-Authors: Ebrahim Moradi, Zahra Mehrani, Homeira EbrahimzadehAbstract:Abstract In the present study, the novel Gelatin/Sodium Triphosphate Hydrogel Nanofiber Mat (GT/STP HNFM) was fabricated using the electrospinning strategy. Owing to the formation of ionic complex between STP and GT, the water stability of synthesized nanofiber increased, thereafter, the synthesized water-insoluble nanofiber was applied as a novel nanosorbent in Microextraction in Packed Syringe (MEPS) method, using for the preconcentration of La3+ and Tb3+ in environmental and industrial water samples to the detection of them by an Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The characterization of nanosorbent was performed and the effect of main parameters on adsorption performance were investigated. Under the optimum condition, the method showed a good linearity ranging from 1 to 500 ng mL−1 with a correlation coefficient superior to 0.998. Additionally, the low detection limits (0.1–0.2 ng mL−1) revealed good sensitivity of the proposed method. Finally, the MESP-ICP-OES method was applied for the determination of La3+ and Tb3+ in environmental and industrial water samples with relative recoveries (RRs) ranging from 85 to 102% and Relative Standard Deviations (RSDs) lower than 2.7%. The outcome of this study revealed an effective method for the extraction and recovery of La3+ and Tb3+ from aqueous solutions using a non-toxic, inexpensive, and efficient nanosorbent.
Hai-quan Mao - One of the best experts on this subject based on the ideXlab platform.
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Enhanced Stability and Knockdown Efficiency of Poly(ethylene glycol)-b-polyphosphoramidate/siRNA Micellar Nanoparticles by Co-condensation with Sodium Triphosphate
Pharmaceutical Research, 2011Co-Authors: Masataka Nakanishi, Yong Ren, Rishab Shyam, Rajesh Patil, Philip Wong, Hai-quan MaoAbstract:Purpose Polyelectrolyte complex nanoparticles are a promising vehicle for siRNA delivery but suffer from low stability under physiological conditions. An effective stabilization method is essential for the success of polycationic nanoparticle-mediated siRNA delivery. In this study, Sodium Triphosphate (TPP), an ionic crosslinking agent, is used to stabilize siRNA-containing nanoparticles by co-condensation. Methods siRNA and TPP were co-encapsulated into a block copolymer, poly(ethylene glycol)- b -polyphosphoramidate (PEG- b -PPA), to form ternary nanoparticles. Physicochemical characterization was performed by dynamic light scattering and gel electrophoresis. Gene silencing efficiency in cell lines was assessed by dual luciferase assay system. Results The PEG- b -PPA/siRNA/TPP ternary nanoparticles exhibited high uniformity with smaller size (80–100 nm) compared with PEG- b -PPA/siRNA nanoparticles and showed increased stability in physiological ionic strength and serum-containing medium, due to the stabilization effect from ionic crosslinks between negatively charged TPP and cationic PPA segment. Transfection and gene silencing efficiency of the TPP-crosslinked nanoparticles were markedly improved over PEG- b -PPA/siRNA complexes in serum-containing medium. No significant difference in cell viability was observed between nanoparticles prepared with and without TPP co-condensation. Conclusions These results demonstrated the effectiveness of TPP co-condensation in compacting polycation/siRNA nanoparticles, improving nanoparticle stability and enhancing the transfection and knockdown efficiency in serum-containing medium.
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Enhanced stability and knockdown efficiency of poly(ethylene glycol)-b-polyphosphoramidate/siRNA micellar nanoparticles by co-condensation with Sodium Triphosphate.
Pharmaceutical research, 2011Co-Authors: Masataka Nakanishi, Rajesh R. Patil, Yong Ren, Rishab Shyam, Philip C. Wong, Hai-quan MaoAbstract:Purpose Polyelectrolyte complex nanoparticles are a promising vehicle for siRNA delivery but suffer from low stability under physiological conditions. An effective stabilization method is essential for the success of polycationic nanoparticle-mediated siRNA delivery. In this study, Sodium Triphosphate (TPP), an ionic crosslinking agent, is used to stabilize siRNA-containing nanoparticles by co-condensation.
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enhanced stability and knockdown efficiency of poly ethylene glycol b polyphosphoramidate sirna micellar nanoparticles by co condensation with Sodium Triphosphate
Pharmaceutical Research, 2011Co-Authors: Masataka Nakanishi, Rajesh R. Patil, Yong Ren, Rishab Shyam, Philip C. Wong, Hai-quan MaoAbstract:Purpose Polyelectrolyte complex nanoparticles are a promising vehicle for siRNA delivery but suffer from low stability under physiological conditions. An effective stabilization method is essential for the success of polycationic nanoparticle-mediated siRNA delivery. In this study, Sodium Triphosphate (TPP), an ionic crosslinking agent, is used to stabilize siRNA-containing nanoparticles by co-condensation.