Determination of sub-micromolar amounts of sulfide by standard free anodic stripping voltammetry and anodic stripping voltammetric titration

Titova, T. V.; Borisova, N. S.; Zakharchuk, N. F.

doi:10.1016/j.aca.2009.09.003

Cited by 21 publications

(7 citation statements)

References 23 publications

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“…Equations (6) and (8) [19] observed that traditional indirect spectrophotometric methods were subjected to incertitude due to oxidative processes and that, more globally, the main hindrance of these approaches toward sulfide quantification was the lack of selectivity, especially with components such as thiocyanate, dithionite, thiols, sulfites, and thiosulfates. Even if indirect methods may be sensitive and reach sub-micromolar detection levels [68,69], they strongly depend on the chemical background (namely, salinity and reactive species) of the samples and are subjected to strong interferences that require, at least, repeated and adapted calibration procedures. Comparative measurement between our method and conventional methods has been performed on one natural sample from the Dogger Aquifer (Supplementary Data, Section 5).…”

Section: Methods Liabilitymentioning

confidence: 99%

Fast Determination of the Main Reduced Sulfur Species in Aquatic Systems by a Direct and Second-Derivative Spectrophotometric Method

Dupraz

Ménez

Guyot

2019

Journal of Chemistry

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e determination of reduced sulfur species in aquatic systems is not an easy and fast task to accomplish regarding the numerous possible interferences and risks of oxidation that occur with the usual methods of quantification. e method presented here is a direct spectrophotometric method that can be used to quantify sulfides, sulfites, and thiosulfates in a simple and rapid way. e principle is based on the comparison of second-derivative absorbance spectra of the same sample at different pH (9.2, 4.7, and 1.0) and selected absorption wavelengths (250 and 278 nm). is method has been successfully tested and has demonstrated liability to (i) avoid the biases due to absorbance overlaps between the different major chemical species and (ii) keep, as a direct method, the advantages over indirect methods on interferences reduction. e limits of detections (LOD) reached for total sulfide, sulfite, and thiosulfate are 1.37, 7.32, and 1.92 µM, respectively. e method displays low accuracy mean and low relative standard deviation (<4%) as well as a good linearity (R 2 > 0.999). Accordingly, this method represents a very robust alternative in terms of cost and rapidity for the quantification of reduced sulfur species in different aquatic environments, from freshwaters to saline and polluted systems. 2−) are less frequently found in natural environments because of their relatively low stability. However, they can be found at high levels in hot springs [14] and are also very commonly used in food and beverage industries as preservatives [15,16].Due to the variable relative abundance of sulfur species in the environment and their implication in numerous

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Section: Methods Liabilitymentioning

confidence: 99%

Fast Determination of the Main Reduced Sulfur Species in Aquatic Systems by a Direct and Second-Derivative Spectrophotometric Method

Dupraz

Ménez

Guyot

2019

Journal of Chemistry

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“…The long-term action of sulfide in low concentrations causes chronic diseases of respiratory tracts, blood, eyes, skin and digestive disturbance. Thus, the high toxicity of sulfide species and reactivity of sulfide species have made their measurement crucial to both analytical and environmental chemists (Titova et al, 2009). A variety of analytical methods for determining sulfides have been reported to data.…”

Section: Introductionmentioning

confidence: 99%

Reagentless biosensor for hydrogen peroxide based on self-assembled films of horseradish peroxidase/laponite/chitosan and the primary investigation on the inhibitory effect by sulfide

Shan

Ding

et al. 2010

Biosensors and Bioelectronics

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“…20 Excessive exposure to sulfide causes chronic disorders in the respiratory tract, blood, eyes, skin, and digestive system and also causes headaches, vertigo, impaired hearing, and autonomic dysfunction. 21 There are several techniques involving voltametric, 22 chromatographic, 23 potentiometric, 24 electrochemical, 25 fluorometric, 26 and colorimetric 27 methods to detect sulfide ions. Among these, fluorescence technique is considered as the most sensitive and selective technique.…”

Section: Introductionmentioning

confidence: 99%

“…Sulfide ion is widely found in nature as industrial wastage and as a harmful water pollutant . Excessive exposure to sulfide causes chronic disorders in the respiratory tract, blood, eyes, skin, and digestive system and also causes headaches, vertigo, impaired hearing, and autonomic dysfunction . There are several techniques involving voltametric, chromatographic, potentiometric, electrochemical, fluorometric, and colorimetric methods to detect sulfide ions.…”

Section: Introductionmentioning

confidence: 99%

Evolution of Silver-Mediated, Enhanced Fluorescent Au–Ag Nanoclusters under UV Activation: A Platform for Sensing

2018

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Here, we report the synthesis of dopamine (DA)-mediated Au–Ag bimetallic nanoclusters in aqueous solution under UV activation. The success story emerges from monometallic fluorescent nanocluster evolution from photoactivation of gold as well as silver precursor compounds along with DA. The intriguing fluorescence property of the nanocluster relates to facile incorporation of Ag in Au, showing a 6-fold enhancement of the emission profile than simply DA-mediated Au nanoclusters. Silver effect, which is classified under the synergism, is the main reason behind such enhancement of fluorescence. The as-synthesized nanoclusters are robust and can be vacuum-dried and redispersed for repetitive application. The intriguing fluorescence of bimetallic nanoclusters is found to be quenched selectively in the presence of sulfide ion in an aqueous medium, paving the way for nanomolar detection of sulfide in water. The utility of the sensing platform has been verified employing different environmental water effluents.

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Determination of sub-micromolar amounts of sulfide by standard free anodic stripping voltammetry and anodic stripping voltammetric titration

Cited by 21 publications

References 23 publications

Fast Determination of the Main Reduced Sulfur Species in Aquatic Systems by a Direct and Second-Derivative Spectrophotometric Method

Fast Determination of the Main Reduced Sulfur Species in Aquatic Systems by a Direct and Second-Derivative Spectrophotometric Method

Reagentless biosensor for hydrogen peroxide based on self-assembled films of horseradish peroxidase/laponite/chitosan and the primary investigation on the inhibitory effect by sulfide

Evolution of Silver-Mediated, Enhanced Fluorescent Au–Ag Nanoclusters under UV Activation: A Platform for Sensing

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