Recent progress in smartphone-based techniques for food safety and the detection of heavy metal ions in environmental water

Chemosphere ◽  
2021 ◽  
Vol 275 ◽  
pp. 130096
Author(s):  
Rajamanickam Sivakumar ◽  
Nae Yoon Lee
Keyword(s):  
Heavy Metal ◽  
Food Safety ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Recent Progress ◽  
Environmental Water

Recent Progress in the Removal of Heavy Metal Ions from Water Using Metal‐Organic Frameworks

2020 ◽  
Vol 5 (1) ◽  
pp. 124-146 ◽  
Author(s):  
Hossein Shayegan ◽  
Gomaa A. M. Ali ◽  
Vahid Safarifard
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Recent Progress ◽  
Metal Organic Frameworks ◽  
Metal Organic

1D GNR‐PPy Composite for Remarkably Sensitive Detection of Heavy Metal Ions in Environmental Water

2021 ◽  
Author(s):  
Bhakti Kulkarni ◽  
V. Suvina ◽  
R Geetha Balakrishna ◽  
D H Nagaraju ◽  
J. Kusuma
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Environmental Water ◽  
Sensitive Detection

Determination of Trace Heavy Metal Ions in Water by FAAS after Preconcentration with ASTO

2013 ◽  
Vol 826 ◽  
pp. 267-270
Author(s):  
En Jun Song
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Absorption Spectrometry ◽  
Environmental Water ◽  
Flame Atomic Absorption ◽  
Experimental Parameters ◽  
Ph Range ◽  
Coexisting Ions

A new method of preconcentration with nanometer-strontium titanate immobilized on aluminum oxide (ASTO) combined with flame atomic absorption spectrometry (FAAS) was proposed for the determination of trace heavy metal ions, included Cu2+, Ni2+ and Ag+, in environmental water. The optimum experimental parameters for preconcentration of the heavy metals studied, such as pH, shaking time, eluent and coexisting ions, have been investigated. The results showed that Cu2+, Ni2+ and Ag+, could be quantitatively retained by the ASTO in the pH range of 5-8, and then eluted completely with 2 mol·L-1 HNO3. The detection limits of this method for Cu2+, Ni2+ and Ag+ were 0.031μg·L-1, 0.15μg·L-1and0.041μg·L-1 with an enrichment factor of 50, respectively. The method has been applied to the simultaneous determination of trace amounts of Cu2+, Ni2+ and Ag+ in environmental water, the recoveries were all in 95%-105%.

scholarly journals A comprehensive review on environmental applications of graphene-carbon nanotube hybrids: recent progress, challenges and prospects

2021 ◽  
Author(s):  
Jomol P. John ◽  
T. E. Mary Nancy ◽  
T. K. Bindu Sharmila
Keyword(s):  
Heavy Metal ◽  
Carbon Nanotube ◽  
Greenhouse Gases ◽  
Metal Ions ◽  
Environmental Pollution ◽  
Heavy Metal Ions ◽  
Recent Progress ◽  
Water Soluble ◽  
Environmental Stability ◽  
Comprehensive Review

Environmental pollution by water-soluble pollutants, heavy metal ions and harmful greenhouse gases is triggering a lot of concern worldwide. These are affecting our environmental stability. Hence it is indispensable to...

Magnetic Nanoparticles Derivatized with both Functional Moieties for the Recovery of Heavy Metal Ions in Environmental Water

2010 ◽  
Vol 129-131 ◽  
pp. 617-620 ◽  
Author(s):  
Qing Zhong Guo ◽  
Ying Wen Xue ◽  
Jun Fang Guo ◽  
Guo Ping Yan ◽  
Li Ang Li
Keyword(s):  
Heavy Metal ◽  
Magnetic Nanoparticles ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Magnetic Particles ◽  
Environmental Water ◽  
Infrared Spectrometry ◽  
Dual Functional ◽  
Prepared Material ◽  
Significant Health

Heavy metal ions are increasingly being released into environment, leading to serious pollution and significant health problems to human being. To address the adverse effects posed by them, in the present study, a remediation method by magnetic nanoparticles was proposed. The magnetic particles were synthesized by a solvothermal process first. Then they were derivatized with dual functional moieties of amino- and mercapto- by reacting with aminopropyl-triethoxysilane and mercaptopropyl-triethoxysilane simultaneously. The prepared material was characterized by infrared spectrometry and elemental analysis. Both functional groups of amino- and mercapto- were present within the material. Since amino- and mercapto- have high affinity for heavy metal ions, the material can be used to retrieve these ions from water samples. Pb2+ and Mn2+ were used as model analytes to evaluate the effectiveness of the material. It is found that, after 60 min adsorption, the ions were almost total removed from the sample solution.

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