Anionic Surfactant Templated Hollow Silica Microspheres Containing Amino Groups for the Electrochemical Determination of Trace Lead (II)

2016 ◽  
Vol 163 (13) ◽  
pp. H1081-H1086 ◽  
Author(s):  
He-Qun Hao ◽  
Lei Xie ◽  
Jun-Cheng Jin ◽  
Ju Wu ◽  
Cheng-Gen Xie ◽  
...  
Keyword(s):  
Anionic Surfactant ◽  
Electrochemical Determination ◽  
Amino Groups ◽  
Silica Microspheres ◽  
Hollow Silica

Hybrid silica-organic material with immobilized amino groups: surface probing and use for electrochemical determination of nitrite ions

2013 ◽  
Vol 67 (1) ◽  
pp. 145-154 ◽  
Author(s):  
Oleg Tkachenko ◽  
Abdur Rahim ◽  
Andrey Baraban ◽  
Ruslan Sukhov ◽  
Inna Khristenko ◽  
...  
Keyword(s):  
Organic Material ◽  
Electrochemical Determination ◽  
Amino Groups ◽  
Hybrid Silica

scholarly journals A Highly Sensitive Impedimetric DNA Biosensor Based on Hollow Silica Microspheres for Label-Free Determination of E. coli

Sensors ◽  
2020 ◽  
Vol 20 (5) ◽  
pp. 1279 ◽  
Author(s):  
Eda Yuhana Ariffin ◽  
Lee Yook Heng ◽  
Ling Ling Tan ◽  
Nurul Huda Abd Karim ◽  
Siti Aishah Hasbullah
Keyword(s):  
Limit Of Detection ◽  
Environmental Water ◽  
Dna Biosensor ◽  
Label Free ◽  
Carbon Paste ◽  
Silica Microspheres ◽  
Hollow Silica ◽  
E Coli ◽  
Specificity And Sensitivity

A novel label-free electrochemical DNA biosensor was constructed for the determination of Escherichia coli bacteria in environmental water samples. The aminated DNA probe was immobilized onto hollow silica microspheres (HSMs) functionalized with 3-aminopropyltriethoxysilane and deposited onto a screen-printed electrode (SPE) carbon paste with supported gold nanoparticles (AuNPs). The biosensor was optimized for higher specificity and sensitivity. The label-free E. coli DNA biosensor exhibited a dynamic linear response range of 1 × 10−10 µM to 1 × 10−5 µM (R2 = 0.982), with a limit of detection at 1.95 × 10−15 µM, without a redox mediator. The sensitivity of the developed DNA biosensor was comparable to the non-complementary and single-base mismatched DNA. The DNA biosensor demonstrated a stable response up to 21 days of storage at 4 ℃ and pH 7. The DNA biosensor response was regenerable over three successive regeneration and rehybridization cycles.

Methylene blue incorporated mesoporous silica microsphere based sensing scaffold for the selective voltammetric determination of riboflavin

RSC Advances ◽  
2016 ◽  
Vol 6 (70) ◽  
pp. 65779-65788 ◽  
Author(s):  
Rupali Gupta ◽  
Pankaj Kumar Rastogi ◽  
Utkarsha Srivastava ◽  
Vellaichamy Ganesan ◽  
Piyush Kumar Sonkar ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Mesoporous Silica ◽  
Sulfonic Acid ◽  
Electrochemical Determination ◽  
Voltammetric Determination ◽  
Silica Microspheres ◽  
Silica Microsphere ◽  
Functionalized Mesoporous Silica ◽  
Mesoporous Silica Microspheres

Methylene blue incorporated sulfonic acid functionalized mesoporous silica microspheres is synthesized and utilized as effective sensing scaffold for electrochemical determination of nanomolar levels of riboflavin.

scholarly journals Electrochemical determination of sertraline in pharmaceutical formulation and serum using a gold electrode in a pH 8.4 bicarbonate solution

2021 ◽  
Vol 152 (2) ◽  
pp. 185-192
Author(s):  
Jelena Lović ◽  
Jelena Lađarević ◽  
Nemanja Trišović ◽  
Filip Andrić ◽  
Aleksandar Mladenović ◽  
...  
Keyword(s):  
Gold Electrode ◽  
Electrochemical Determination ◽  
Pharmaceutical Formulation
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