Determination of Heavy Metal Ions in Aqueous Solutions by Phthalocyanine Coated Quartz Crystal Microbalance

2006 ◽  
Vol 4 (3) ◽  
pp. 312-318
Author(s):  
C. Çoban ◽  
E. Demirbaş
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Quartz Crystal Microbalance ◽  
Heavy Metal Ions ◽  
Quartz Crystal

Novel 4,4′-{(diphenylmethylene) bis(4,1-phenylene)bis(oxy)}-bridged ball-type phthalocyanines: Electrochemical, electrocatalytic oxygen reducing and heavy metals ions sensing properties

2016 ◽  
Vol 20 (08n11) ◽  
pp. 1319-1333 ◽  
Author(s):  
Elvan Doğan ◽  
Metin Özer ◽  
Ahmet Altındal ◽  
Ali Rıza Özkaya ◽  
Bekir Salih ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Quartz Crystal Microbalance ◽  
Metal Ion ◽  
Heavy Metal Ions ◽  
Quartz Crystal ◽  
Structural Difference ◽  
Ionization Mass ◽  
Metal Free ◽  
Quartz Crystal Microbalance Sensor

Novel 4,4′-{(diphenylmethylene)bis(4,1-phenylene)bis(oxy)} bridged ball-type metal-free, zinc(II), cobalt(II) and iron(II) ball-type metallophthalocyanines were achieved by the reaction of the bisphthalonitrile derivative in 2-dimetylaminoethanol. The isolation of the metal-free and metallophthalocyanines were carried out by both planar and column chromatography and also by hot soxhalet extraction. Their structures have been characterized by infrared, ultraviolet-visible,1H nuclear magnetic resonance and matrix assisted laser desorption/ionization mass spectroscopies. The redox characters of the ball-type metallophthalocyanines have been investigated by cyclic voltammetry, square wave voltammetry, controlled potential coulometry and spectroelectrochemistry in nonaqueous media. The investigation suggested that the ball-type complexes form ring-based and/or metal-based mixed-valence species as a result of the remarkable interaction between the two Pc rings and/or metal centers. Furthermore, these species were found to be stable as evidenced by the splitting of the relevant redox processes. The electrocatalytic oxygen reducing performances of the dinuclear ball-type complexes were also studied. The compound involving Fe(II) centers at the phthalocyanine cores displayed higher catalytic performance towards oxygen reduction than those of other ones. By using these compounds as sensing materials, a flow type quartz crystal microbalance sensor was developed for the detection of small concentrations of heavy metal ions. A cadmium ion sensitivity of 2.85 × 104Hz/mg.L[Formula: see text] was observed with ball-type iron(II) phthalocyanine coated quartz crystal microbalance sensor. Detection of other metal ions including Fe[Formula: see text], Zn[Formula: see text], Ag[Formula: see text] and Sn[Formula: see text] were also performed. The results indicated that 1– 4 functionalized quartz crystal microbalance sensors can be used for the detection of heavy metal ions in aqueous solution. Partition coefficients obtained from the linear response regimes of the calibration curves are in the 8.6 × 104–5.4 × 105range. Results show that the minor structural difference between metal free and metallophthalocyanine poses significant impact on metal ion partitioning.

Determination of heavy metal ions concentration in aqueous solutions using adaptive data analysis methods

2020 ◽  
Author(s):  
Olga E. Sarmanova ◽  
Kirill A. Laptinskiy ◽  
Sergey A. Burikov ◽  
Igor V. Isaev ◽  
Nikita D. Trifonov ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Data Analysis ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Analysis Methods ◽  
Adaptive Data Analysis ◽  
Data Analysis Methods

scholarly journals Porous BMTTPA–CS–GO nanocomposite for the efficient removal of heavy metal ions from aqueous solutions

RSC Advances ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 3725-3731
Author(s):  
Juan Huang ◽  
Weirong Cui ◽  
Ruping Liang ◽  
Li Zhang ◽  
Jianding Qiu
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Polluted Water ◽  
Efficient Removal

Novel porous BMTTPA–CS–GO nanocomposites are prepared by covalently grafting BMTTPA–CS onto GO surfaces, and used for efficient removal of heavy metal ions from polluted water.

scholarly journals Rapid removal of heavy metal ions from aqueous solutions by low cost adsorbents

2012 ◽  
Vol 12 (2/3/4) ◽  
pp. 318 ◽  
Author(s):  
Ali Ahmadpour ◽  
Tahereh Rohani Bastami ◽  
Masumeh Tahmasbi ◽  
Mohammad Zabihi
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Low Cost ◽  
Rapid Removal

Adsorption of heavy metal ions from aqueous solutions by bio-char, a by-product of pyrolysis

2013 ◽  
Vol 283 ◽  
pp. 856-862 ◽  
Author(s):  
Murat Kılıç ◽  
Çisem Kırbıyık ◽  
Özge Çepelioğullar ◽  
Ayşe E. Pütün
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions
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