Ultrasensitive diffraction gratings based on smart hydrogels for highly selective and rapid detection of trace heavy metal ions

A smart-hydrogel-based ultrasensitive grating system with ultra-low detection limit for highly-selective and rapid detection of trace heavy metal ions is developed.

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A pH-stable Ag(i) multifunctional luminescent sensor for the efficient detection of organic solvents, organochlorine pesticides and heavy metal ions

RSC Advances ◽

10.1039/d0ra08991e ◽

2020 ◽

Vol 10 (73) ◽

pp. 44712-44718

Author(s):

Jianxin Ma ◽

Yue Wang ◽

Guocheng Liu ◽

Na Xu ◽

Xiuli Wang

Keyword(s):

Heavy Metal ◽

Detection Limit ◽

Metal Ions ◽

Organochlorine Pesticides ◽

Organic Solvents ◽

Heavy Metal Ions ◽

Ph Stability ◽

Low Detection Limit ◽

Luminescent Sensor ◽

Efficient Detection

3D supramolecular LCP 1 can detect Hacac, NB, 2,6-DCN, Fe2+, Hg2+, and Fe3+ with a low detection limit and pH stability.

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Fabrication of novel polymer-modified graphene-based electrochemical sensor for the determination of mercury and lead ions in water and biological samples

Journal of Analytical Science & Technology ◽

10.1186/s40543-019-0194-0 ◽

2020 ◽

Vol 11 (1) ◽

Cited By ~ 3

Author(s):

Chenthattil Raril ◽

Jamballi G. Manjunatha

Keyword(s):

Heavy Metal ◽

Detection Limit ◽

Metal Ions ◽

Biological Samples ◽

Heavy Metal Ions ◽

Electrochemical Techniques ◽

Differential Pulse ◽

Modified Graphene ◽

Water And Biological Samples

Abstract Background This paper presents the application of polyglycine-modified graphene paste electrode (PGMGPE) for the electrochemical detection of Hg (II) and Pb (II) ions in the water and biological samples. Method The developed electrode was characterized by field emission scanning electron microscopy. Electrochemical techniques such as cyclic voltammetry and differential pulse voltammetry were used to study the behavior of metal ions. Results The modification process improves the electrochemical behavior of heavy metal ions. The peak current varied linearly with the increase of the concentration leading to a detection limit of 6.6 μM (Hg (II)) and 0.8 μM (Pb (II)), respectively. Conclusion The developed electrode exhibits good sensitivity, selectivity, stability, and lower detection limit, and was successfully applied to the determination of heavy metal ions in water and biological samples with a good recovery range.

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A self-supported electrochemical sensor for simultaneous sensitive detection of trace heavy metal ions based on PtAu alloy/carbon nanofibers

Analytical Methods ◽

10.1039/c7ay02223a ◽

2017 ◽

Vol 9 (48) ◽

pp. 6801-6807 ◽

Cited By ~ 8

Author(s):

SongGe Zhang ◽

Han Zhu ◽

PiMing Ma ◽

Fang Duan ◽

WeiFu Dong ◽

...

Keyword(s):

Heavy Metal ◽

Detection Limit ◽

Metal Ions ◽

Electrochemical Sensor ◽

Carbon Nanofibers ◽

Electrochemical Detection ◽

Heavy Metal Ions ◽

High Sensitivity ◽

Sensitive Detection ◽

Alloy Carbon

The key issue in efficient electrochemical detection of trace heavy metal ions (HMIs) is to design hierarchical nanostructure electrodes with high sensitivity and low detection limit.

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Novel Diazocrowns with Pyrrole Residue as Lead(II)Colorimetric Probes

Materials ◽

10.3390/ma14237239 ◽

2021 ◽

Vol 14 (23) ◽

pp. 7239

Author(s):

Błażej Galiński ◽

Elżbieta Luboch ◽

Jarosław Chojnacki ◽

Ewa Wagner-Wysiecka

Keyword(s):

Heavy Metal ◽

Detection Limit ◽

Metal Ions ◽

Heavy Metal Ions ◽

Spectral Response ◽

Hydrocarbon Chain ◽

High Dilution ◽

Aromatic Diamines ◽

Aqueous Acetonitrile ◽

X Ray

Novel 18- and 23-membered diazomacrocycles were obtained with satisfactory yields by diazocoupling of aromatic diamines with pyrrole in reactions carried under high dilution conditions. X-ray structure of macrocycle bearing five carbon atoms linkage was determined and described. Compounds were characterized as chromogenic heavy metal ions receptors. Selective color and spectral response for lead(II) was found in acetonitrile and its mixture with water. Complexation properties of newly obtained macrocycles with a hydrocarbon chain were compared with the properties of their oligoether analogs. The influence of the introduction of hydrocarbon residue as a part of macrocycle on the lead(II) binding was discussed. Selective and sensitive colorimetric probe for lead(II) in aqueous acetonitrile with detection limit 56.1 mg/L was proposed.

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