Removal of heavy metals from artificial metals contaminated water samples based on micelle-templated silica modified with pyoverdin I

Tansupo, Panadda; Worakarn, Chamonkolpradit; Chanthai, Saksit; Ruangviriyachai, Chalerm

doi:10.1016/s1001-0742(08)62376-1

Cited by 8 publications

(6 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…9,[73][74][75][76][77][78][79][80][81][82][83] Next, we evaluate several synthetic fluorophore-siderophore conjugates where fluorophores are attached to native siderophore scaffolds to provide fluorescence responses following Fe(III) coordination. [84][85][86][87][88] Iron is a paramagnetic metal ion and thus has a propensity to quench fluorophore emission.…”

Section: Strategies For Fe(iii) Detectionmentioning

confidence: 99%

“…Both naturallyemissive siderophores, including pyoverdine 1 produced by Pseudomonas spp. and azotobactin 3 from the soil bacterium Azotobacter vinelandii, [73][74][75][76][77][78][79][80][81][82][83] and synthetic fluorophoresiderophore conjugates where fluorophores are attached to native siderophore scaffolds provide fluorescence responses following Fe(III) coordination. [84][85][86][87][88] Iron, like many transition metal ions, has a propensity to quench fluorophore emission.…”

Section: Strategies For Fe(iii) Detectionmentioning

confidence: 99%

“…[73][74][75] Subsequently, we describe efforts to immobilize siderophores in materials, including micelle-templated silica and sol gel, for the optical detection of this metal ion. 83,[76][77][78][79][80][81] Azotobactin d 3 is a fluorescent siderophore produced by Azotobacter vinelandii and shares structural similarities with the pyoverdines. In the laboratory, this natural product can be isolated in quantities of 100-200 mg L À1 of culture when a mutant strain that overproduces the siderophore is employed, 96,97 providing sufficient quantities for extensive analytical work.…”

Section: Strategies For Fe(iii) Detectionmentioning

confidence: 99%

“…Pyoverdine has been immobilized on controlled pore glass (CPG), in large-pore micelle-templated silica (MTS), and in sol gels for Fe(III) detection. [76][77][78][79][80] In the early 1990s, pyoverdine was immobilized on CPG and thereby incorporated into a flow cell, which provided iron determination in the 10-200 ng mL À1 range and a modest detection limit of 3 ng mL À1 . 76 This approach was employed to evaluate iron concentrations in tap and mineral waters, and the resulting data were in agreement with data obtained by inductively coupled plasma atomic emission spectroscopy (95% confidence level).…”

Section: Strategies For Fe(iii) Detectionmentioning

confidence: 99%

See 3 more Smart Citations

Siderophore-based detection of Fe(iii) and microbial pathogens

Zheng

Nolan

2012

Metallomics

View full text Add to dashboard Cite

Siderophores are low-molecular-weight iron chelators that are produced and exported by bacteria and fungi during periods of nutrient deprivation. The structures, biosynthetic logic, and coordination chemistry of these molecules have fascinated chemists for decades. Studies of such fundamental phenomena guide the use of siderophores and siderophore conjugates in a variety of medicinal applications that include iron-chelation therapies and drug delivery. Sensing applications constitute another important facet of siderophore-based technologies. The high affinities of siderophores for both ferric ions and siderophore receptors, proteins expressed on the cell surface that are required for ferric siderophore import, indicate that these small molecules may be employed for the selective capture of metal ions, proteins, and live bacteria.This minireview summaries progress in methods that utilize native bacterial siderophore scaffolds for the detection of Fe(III) or microbial pathogens.2

show abstract

Section: Strategies For Fe(iii) Detectionmentioning

confidence: 99%

Section: Strategies For Fe(iii) Detectionmentioning

confidence: 99%

Section: Strategies For Fe(iii) Detectionmentioning

confidence: 99%

Section: Strategies For Fe(iii) Detectionmentioning

confidence: 99%

See 2 more Smart Citations

Siderophore-based detection of Fe(iii) and microbial pathogens

Zheng

Nolan

2012

Metallomics

View full text Add to dashboard Cite

show abstract

“…259 Pyoverdin, a natural Fe(III) chelator from a Pseudomonas fluorescens strain, was also immobilized in micelletemplated silica, either by physical encapsulation 260 or via covalent bonding using 3-glycidoxypropyltrimethoxysilane as linking agent. 261,262 This can be used as Fe(III) adsorbent, showing capacities higher by one order of magnitude in comparison to silica gels bearing the same chelator of biological origin. 262 4.1.4.…”

mentioning

confidence: 99%