In-capillary derivatization and determination of iodine in sodium chloride solution

Nguyen, Bao D.; Chernov’yants, M. S.; Бурыкин, И. В.

doi:10.1039/c1an15932a

Cited by 9 publications

(9 citation statements)

References 14 publications

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“…Similarly, Nguyen et al. applied the same principle for the determination of iodine, only thiosulfate was used as a reductant . Since both reaction products, iodide and tetrathionate, strongly absorbed at 253.7 nm, they could be used for iodine determination.…”

Section: Application Of On‐column Derivatisationmentioning

confidence: 99%

On‐capillary derivatisation as an approach to enhancing sensitivity in capillary electrophoresis

Glatz

2014

Electrophoresis

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Separation technologies play an important role in revealing biological processes at various omic levels, in pharmacological and clinical research. In this context, CE is a strong candidate for analyses of samples with rapidly increasing complexity. Even though CE is well known for its many advantages in this regard, the sensitivity of CE analyses is insufficient for many applications. Accordingly, there are generally three main options for enhancing the sensitivity of CE analyses - using special detection techniques, using sample pre-concentration and derivatisation. Derivatisation is often the method of choice for many laboratories, since it is simple and provides several advantages such as small sample volume demand and the possibility of automation. Although it can be performed in different ways depending on where the reaction takes place, this article reviews one of the simplest and at the same time most useful approaches on-capillary derivatisation. Even if in many cases the use of on-capillary derivatisation alone is enough to improve the detection sensitivity, on other occasions it needs to be employed in combination with the other above-mentioned strategies. After a simple discussion of derivatisation in general, special attention is focused on the on-capillary approach and methodologies available for on-capillary reactant mixing. Its applications in various fields are also described.

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Section: Application Of On‐column Derivatisationmentioning

confidence: 99%

On‐capillary derivatisation as an approach to enhancing sensitivity in capillary electrophoresis

Glatz

2014

Electrophoresis

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“…The linear range is 0.008-1.5μmol/L, with a regress equation of ΔI I =896 C I +52 and a detection limit (3σ) of 4 nmol/L I − . At present, several methods including spectrophotometry, fluorescence, high-performance liquid chromatography (HPLC), and mass spectrometry (MS) [57][58][59][60][61][62][63] have been reported for determination of iodine ion. HPLC and MS are sensitive, but both operations are complicated, the equipment costs and operation costs are very high.…”

Section: Influence Of Coexistent Substancesmentioning

confidence: 99%

A Sensitive Silver Nanorod/Reduced Graphene Oxide SERS Analytical Platform and Its Application to Quantitative Analysis of Iodide in Solution

et al. 2014

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Using the chemical-microwave reduced procedure with H 2 O 2 , NaBH 4 , and citrate as reducer, a silver nanorod (AgNR)/reduced graphene oxide (rGO) nanosheet composite (AgNR/rGO) was prepared in a solution with good stability. Upon addition of NaCl and molecular probe of rhodamine 6G (Rh6G), a stable and sensitive AgNR/rGO-aggregation (AgNR/rGOA) surface-enhanced Raman scattering (SERS) nanosensor was fabricated for Rh6G that exhibited a strongest SERS peak at about 1505 cm −1 . The SERS peak intensity is linear to Rh6G concentration in the range of 1.0-600 nmol/L, with a detection limit of 0.2 nmol/L. Combined with the iodide SERS quenching effect on the molecular probe, a 8-1500 nmol/L iodine in solution was detected by this SERS nanosensor analytical platform, with satisfactory results.Keywords AgNR/rGO . Microwave preparation . Rhodamine 6G . SERS nanosensor . Iodine ion Recently, biochemical sensing technology has made significant progress due to a large number of novel nanomaterials designed and fabricated for the applications [1-11]. These new nanomaterials provide a useful platform and have been utilized in chemical sensing that have exhibited great advantages over conventional methods in sensitivity, selectivity and practicality. Among these nanomaterials, especially metal nanoparticles such as nanosilver and carbon nanoparticles such as graphene oxide (GO) nanosheet have attracted much attention owing to its novel optical and chemical properties, preparation simplicity, and practicality [12,13]. Since nanosilvers exhibited strong surface-enhanced Raman scattering (SERS) [14][15][16][17], it has been firstly selected as solid and sol substrates in SERS sensors. The synthesis of nanosilver includes physical and chemical methods [18,19]. The chemical synthesis of nanosilver sol as SERS substrate is interesting to people because of its simplicity, low-cost, easy control, and practicality that included the citrate heating and NaBH 4 -citrate procedures. The former nanosilver sols have been widely used in SERS detection technique [20], and it is difficult to the quantitative analysis because it is unstable and reproducibility is not good. The later is stable and has been used in SERS quantitative analysis, but the sensitivity is not high. To improve the sensitivity, selectivity, and reproducibility, other shapes of nanosilver [21][22][23][24][25][26] and the combination of nanosilver with new nanomaterials including graphene oxide (GO) [27][28][29] have been synthesized and utilized in SERS analysis. For example, triangular silver nanoplates were prepared by a water bath heating method at 60°C, using NaBH 4 and sodium citrate as reducing agents while polyvinylpyrrolidone (PVP) as a surfactant and protective agent, and it was used as SERS substrate to detect pyridine as low as 1.0× 10 −7 mol/L [21]. A high-density square array of freestanding silver nanorods has been fabricated on solid substrate surfaces using alumina templates [22]. Liu and Chen synthesized the graphene nanosheet-supported Ag nanoparticles t...

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“…Twelve articles were considered from this mode . Mesbah et al.’s strategy for in‐capillary labelling of nanomolar‐level ubiquitin in cerebrospinal fluid with Fluoprobes® 488 N ‐hydroxysuccinimide is shown in Fig.…”

Section: Derivatisation Modesmentioning

confidence: 99%

“…Derivatisation in CE is used to improve or enable detection by LIF, UV, chemiluminescence (CL), electrochemiluminescence (ECL), amperometric detection (AD), MS or [16-18, [20,33,35,36,38,42-48], [50,51,57]], two on CL [22,49], one on ECL [39], two on AD [26,58], three on MS (and MS combined with other detectors) [25,32,37] and two on C4D [40,41].…”

Section: Derivatisation For Detectionmentioning

confidence: 99%

“…Derivatisation in CE is used to improve or enable detection by LIF, UV, chemiluminescence (CL), electrochemiluminescence (ECL), amperometric detection (AD), MS or contactless conductivity detection (C4D). During this review period, there were papers 18 on LIF (and LIF combined with other detectors) [, , ], 18 on UV (and UV combined with other detectors) [, , ], two on CL , one on ECL , two on AD , three on MS (and MS combined with other detectors) and two on C4D .…”

Section: Derivatisation For Detectionmentioning

confidence: 99%

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Derivatisation for separation and detection in capillary electrophoresis (2012–2015)

Wuethrich

Quirino

2015

Electrophoresis

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Derivatisation is a well-established and mature form of sample preparation for CE. The modification of the analyte can cause superior analysis characteristics such as better sensitivity and selectivity, however, derivatisation of the analyte introduces an additional step into the analytical workflow. This review covers articles from January 2012 to January 2015 on derivatisation in CE. The main sections are on the derivatisation modes (i.e. pre-capillary, in-line, in-capillary and post-capillary), separation and detection modes (i.e. LIF and others). LIF is discussed in more detail since this detection mode was most prevalent. A table of the common labelling agents and wavelengths for excitation and emission and the common derivatisation reactions are included. In addition, a comprehensive table which summarises all research articles is provided. This review is suitable for analytical chemists as a guide for 'how to get started' with derivatisation for separation and detection in CE.

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In-capillary derivatization and determination of iodine in sodium chloride solution

Cited by 9 publications

References 14 publications

On‐capillary derivatisation as an approach to enhancing sensitivity in capillary electrophoresis

On‐capillary derivatisation as an approach to enhancing sensitivity in capillary electrophoresis

A Sensitive Silver Nanorod/Reduced Graphene Oxide SERS Analytical Platform and Its Application to Quantitative Analysis of Iodide in Solution

Derivatisation for separation and detection in capillary electrophoresis (2012–2015)

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