A cellulose-based carboxyl cotton chelator having citric acid as an anchored ligand: preparation and application as solid phase extractant for copper determination by flame atomic absorption spectrometry

Gong, Renmin; Hu, Yun; Chen, Jian; Chen, Fayang; Liu, Zhili

doi:10.1007/s00604-006-0722-7

Cited by 26 publications

(12 citation statements)

References 20 publications

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“…24 Briefly, 5 g of degreasing cotton was totally immersed in 60 mL of citric acid (CA) aqueous solution (0.5 M), and the mixture was put into a watch-glass along with oven-dried at After cooling, the resulting CCC was washed with distilled water and collected for the following experiments.…”

Section: Preparation Of the Carboxyl Cotton Chelator (Ccc)mentioning

confidence: 99%

“…[20][21][22][23] Carboxyl cotton chelator (CCC), prepared by thermochemically esterification of cotton fiber with citric acid (CA), has two carboxyl groups on each structure unit, which serve as chelating ligand for bonding metal ions in previous work. 24 Take account of the advantages inherited from cotton, such as good biocompatibility, high mechanical strength and stability, hydrophilic CCC obtained by a simple synthetic method can be used as a fibrous substrate for metal ions immobilization, which can further serve as a novel IMAC platform. In addition, fibrous sorbents could be easily packed into syringe or pipet-tip for miniaturized SPE in our previous works, which was simple, rapid and cost-effective.…”

Section: Introductionmentioning

confidence: 99%

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Hydrophilic Carboxyl Cotton Chelator for Titanium(IV) Immobilization and Its Application as Novel Fibrous Sorbent for Rapid Enrichment of Phosphopeptides

Chen

Zhu

et al. 2015

ACS Appl. Mater. Interfaces

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Sample preparation methods with high selectivity, efficiency, and matrix resistance are essential for phosphoproteomic analysis. In this study, carboxyl cotton chelator-titanium(IV) (CCC-Ti4+) fibers, a novel CCC-based fibrous sorbent with excellent biocompatibility, were successfully synthesized on the basis of the coordination effect between double carboxyl groups on CCC and Ti4+. The synthesis of CCC-Ti4+ fibers was easy, and the incorporated titanium content was high. On the basis of immobilized metal ion affinity chromatography (IMAC), CCC-Ti4+ fibers were used for specific capture of phosphopeptides using a lab-in-syringe solid-phase extraction (SPE) from multiple biological samples, including standard protein digests, nonfat milk digests, human serum, and animal tissue. The proposed sorbent exhibited high selectivity (β-casein/BSA=1:1000) and good sensitivity (10 fmol) in phosphopeptides analysis. Meanwhile, the lab-in-syringe SPE greatly simplified the entire process of enrichment. Thanks to the good biocompatibility of CCC-based material, CCC-Ti4+ fibers showed excellent performance in phosphopeptide enrichment from protein-rich human serum. Finally, CCC-Ti4+ fibers were applied for selective capture of phosphopeptides from tryptic digests of rat brain lysate followed by LC-MS/MS analysis. Using the proposed method, we identified 3950 unique phosphosites from 1 mg of rat brain in a single experiment, which is much better than previously reported IMAC-based strategies. Taken together, this efficient method will find broad application in large-scale phosphoproteomics analysis because of the rapid (3 min) convenient procedure and excellent performance.

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Section: Preparation Of the Carboxyl Cotton Chelator (Ccc)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hydrophilic Carboxyl Cotton Chelator for Titanium(IV) Immobilization and Its Application as Novel Fibrous Sorbent for Rapid Enrichment of Phosphopeptides

Chen

Zhu

et al. 2015

ACS Appl. Mater. Interfaces

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“…Furthermore, other literature reports revealed that citric acid reacted to the cellulose hydroxyls for antimicrobial effectiveness against the some microorganisms (Budimir et al 2012). Cotton fiber was modified with citric acid to produce a carboxyl cotton chelator (Gong et al 2007) or non-woven mat (Marshall et al 2007) for extraction of copper in water. However, little research has been concerned with the synthesis and catalytic activity of the heterogeneous Fenton catalyst with citric acid-modified cotton fiber.…”

Section: Introductionmentioning

confidence: 99%

Preparation and catalytic performance of Fe(III)-citric acid-modified cotton fiber complex as a novel cellulose fiber-supported heterogeneous photo-Fenton catalyst

Dong

2015

Cellulose

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Woven cotton fabric was first modified with citric acid by a conventional pad-dry-cure process and then coordinated with Fe(III) ions to prepare a Fe(III)-modified cotton fiber complex. After the characterization by SEM, FTIR, XPS, XRD and DRS, this complex was used as a heterogeneous Fenton catalyst for the degradation of a typical textile dye, Acid Red 88, under visible irradiation. Some factors affecting the modification process, such as the citric acid and NaH 2 PO 4 concentrations as well as the curing temperature, were also investigated with respect to the coordinating performance of the modified fabric and the catalytic activity of its Fe complex. The results indicated that cotton fabric could be esterified with citric acid to impart the carboxylic groups, which successfully reacted with Fe(III) ions to form the complex. Dye degradation was significantly accelerated by the presence of the complex under visible irradiation. Increasing the concentrations of citric acid, NaH 2 PO 4 or the curing temperature enhanced the carboxyl group content of the modified fiber as well as Fe content and catalytic activity of its complex. However, an excessive amount of citric acid and NaH 2 PO 4 or a curing temperature higher than 140°C reduced the Fe content and catalytic activity of the complex. A higher initial H 2 O 2 concentration promoted the dye degradation. The excellent catalytic and mechanical performance was also found in its reuse processes.

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“…Before use, if necessary, the modified cellulose fibers were converted into acidic form with the acid treatment [15][16][17]. The chemically modified fibers are termed as the fibers supported solid membrane (FSSM).…”

Section: Synthesismentioning

confidence: 99%

“…The direct coupling of the extraction process with liquid chromatography has been used for the analysis of nbutylphthalate in wastewater [14]. The different agricultural residues such as wheat straw, bagasse, cotton stalks, and saw dust have been chemically modified to prepare cation exchangers [13][14][15][16][17]. The cellulose ion exchangers were prepared by attaching substituent groups to the cellulose fibers, usually by etherification or esterification reactions.…”

Section: Introductionmentioning

confidence: 99%

Cation exchange chromatographic separation of amines through fiber supported solid membrane

Gaikwad¹

2011

Chem. Eng. Res. Bull.

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Abstract:The cation exchange chromatographic separation of pyridine, monoethanol amine (MEA) and triethanol amine (TEA) have been explored from source to receiving phase through a fiber supported solid membrane (FSSM). The FSSM were prepared by chemical modification of cellulose fibers with introducing the carboxylic acid ion exchanging groups. The experimental values explored were concentration of pyridine, MEA and TEA (10 −2 to 10 −6 M) in the source solution, HCl (0.01 to 0.20 M) in the receiving phase and stirring speed (50-130 rpm) of the bulk source and receiving phase. The efficiency of FSSM has been evaluated for the transport of pyridine, MEA and TEA from the source to receiving through membrane phase. The enrichment factors (EF) for pyridine, MEA and TEA from the dilute solutions such as 10 −6 M observed were 1.62, 2.26 and 1.7, respectively.

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A cellulose-based carboxyl cotton chelator having citric acid as an anchored ligand: preparation and application as solid phase extractant for copper determination by flame atomic absorption spectrometry

Cited by 26 publications

References 20 publications

Hydrophilic Carboxyl Cotton Chelator for Titanium(IV) Immobilization and Its Application as Novel Fibrous Sorbent for Rapid Enrichment of Phosphopeptides

Hydrophilic Carboxyl Cotton Chelator for Titanium(IV) Immobilization and Its Application as Novel Fibrous Sorbent for Rapid Enrichment of Phosphopeptides

Preparation and catalytic performance of Fe(III)-citric acid-modified cotton fiber complex as a novel cellulose fiber-supported heterogeneous photo-Fenton catalyst

Cation exchange chromatographic separation of amines through fiber supported solid membrane

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