Colorimetric Method for Determining Pb<sup>2+</sup> Ions in Water Enhanced with Non-Precious-Metal Nanoparticles

Yan, Jeffrey; Indra, Erik M.

doi:10.1021/ac301018y

Cited by 33 publications

(14 citation statements)

References 21 publications

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“…1 Pb 2+ can also have adverse effects on human health and the environment, resulting in neurological, cardiovascular and developmental disorders, even at very low levels. 1 Pb 2+ can also have adverse effects on human health and the environment, resulting in neurological, cardiovascular and developmental disorders, even at very low levels.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of gold nanoparticles and its application for the trace level determination of painter's colic

et al. 2015

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The green synthesis of metal nanoparticles is found to be more attractive in various disciplines, including analytical chemistry. The present study demonstrates a selective voltammetric determination of painter's colic (lead poisoning) using green synthesized gold nanoparticles (Au-NPs) modified glassy carbon electrode (GCE). The Au-NPs were synthesized by the reduction of chloroaurate ions with the fresh leaf extract of Justicia glauca. The formation of Au-NPs was confirmed by UV-visible spectroscopy using surface plasmon resonance. The average size of the synthesized Au-NPs is found to be 32.5 AE 0.25. A good cathodic response current was observed at the Au-NPs modified electrode, whereas the unmodified electrode does not show any response in the presence of Pb 2+ . With optimum condition, the Au-NPs modified electrode exhibits a good response towards Pb 2+ with a linear response range from 0.005 to 800 mM L À1 and the lowest detection limit of 0.07 nM L À1 . The fabricated sensor exhibits a high selectivity towards Pb 2+ in the presence of 100 fold concentrations of other metal ions. In addition, the proposed sensor also shows a good practicality towards Pb 2+ in river water samples. Fig. 2 Differential pulse voltammetric response of the bare (a) and Au-NPs (b) modified glassy carbon electrode response to 100 mM L À1 Pb 2+ in N 2 saturated pH 5 solution.This journal is

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Section: Introductionmentioning

confidence: 99%

Green synthesis of gold nanoparticles and its application for the trace level determination of painter's colic

et al. 2015

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“…The determination of Pb 2+ ions removed was performed by the UV spectrophotometric method developed by [ 44 , 45 , 46 ] using an UV-Vis spectrophotometer VWR-1600PC. In the concentration range between 10 mg·L −1 and 1 mg·L −1 , where calibration curves obtained showed linearity, the Beer–Lambert law was obeyed.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of Inulin Replacing Chitosan in a Polyurethane/Polysaccharide Material for Pb2+ Removal

et al. 2017

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Downstream waste from industry and other industrial processes could increase concentration of heavy metals in water. These pollutants are commonly removed by adsorption because it is an effective and economical method. Previously, we reported adsorption capacity of a chitosan/polyurethane/titanium dioxide (TiO2) composite for three ions in a dynamic wastewater system. There, increasing the chitosan concentration in composite increased the cation removal as well; however, for ratios higher than 50% of chitosan/TiO2, the manufacturing cost increased significantly. In this work, we address the manufacturing cost problem by proposing a new formulation of the composite. Our hypothesis is that inulin could replace chitosan in the composite formulation, either wholly or in part. In this exploratory research, three blends were prepared with a polyurethane matrix using inulin or/and chitosan. Adsorption was evaluated using a colorimetric method and the Langmuir and Freundlich models. Fourier-transform infrared spectroscopy (FTIR) spectra, scanning electron microscopy (SEM) micrographs, differential scanning calorimetry and thermogravimetric analysis curves were obtained to characterize blends. Results indicate that blends are suitable for toxic materials removal (specifically lead II, Pb2+). Material characterization indicates that polysaccharides were distributed in polyurethane’s external part, thus improving adsorption. Thermal degradation of materials was found above 200 °C. Comparing the blends data, inulin could replace chitosan in part and thereby improve the cost efficiency and scalability of the production process of the polyurethane based-adsorbent. Further research with different inulin/chitosan ratios in the adsorbent and experiments with a dynamic system are justified.

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“…The limit of detection and the linear dynamic range of the proposed method for the lead are comparable with other methods. [20][21][22][23][24][25][26][27][28][29] However, in comparison to the solid phase extraction-colorimetry, LSPR technique is faster.…”

Section: Comparison With Previous Studiesmentioning

confidence: 99%

Development of an Analytical Method for the Determination of Lead Based on Local Surface Plasmon Resonance of Silver Nanoparticles

Azimi¹,

Ahmadi²,

Manafi³

et al. 2020

Quim. Nova

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Lead is environmental pollutant that even in low trace is harmful for human health and wildlife. In this study we presented a colorimetric method for determination of Pb 2+ in water by aggregation of silver nanoparticles capped citrate in the presence of deferoxamine as chelating agent. Silver nanoparticles were prepared by reduction of AgNO 3 with NaBH 4. In the presence of Pb 2+ , mixture of silver nanoparticles capped citrate and deferoxamine aggregated and color of solution changed from light yellow to violet that depends on Pb 2+ concentration. As a result of aggregation, local surface plasmon resonance (LSPR) band of silver nanoparticles around 440 nm decreases and a new band appears at 580 nm that depend on Pb 2+ concentration. Under optimized conditions, linear relation of concentration of Pb 2+ and absorbance ratio (A 580 /A 440), was from 0.19 to 1.29 µmol L-1 and limit of detection of 0.056 µmol L-1 was found. Control experiments with the addition of 10 other metal ions

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Colorimetric Method for Determining Pb²⁺ Ions in Water Enhanced with Non-Precious-Metal Nanoparticles

Cited by 33 publications

References 21 publications

Green synthesis of gold nanoparticles and its application for the trace level determination of painter's colic

Green synthesis of gold nanoparticles and its application for the trace level determination of painter's colic

Evaluation of Inulin Replacing Chitosan in a Polyurethane/Polysaccharide Material for Pb2+ Removal

Development of an Analytical Method for the Determination of Lead Based on Local Surface Plasmon Resonance of Silver Nanoparticles

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Colorimetric Method for Determining Pb2+ Ions in Water Enhanced with Non-Precious-Metal Nanoparticles

Cited by 33 publications

References 21 publications

Green synthesis of gold nanoparticles and its application for the trace level determination of painter's colic

Green synthesis of gold nanoparticles and its application for the trace level determination of painter's colic

Evaluation of Inulin Replacing Chitosan in a Polyurethane/Polysaccharide Material for Pb2+ Removal

Development of an Analytical Method for the Determination of Lead Based on Local Surface Plasmon Resonance of Silver Nanoparticles

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Colorimetric Method for Determining Pb²⁺ Ions in Water Enhanced with Non-Precious-Metal Nanoparticles