Electrochemical behavior of aqueous acid perrhenate-containing solutions on noble metals: critical review and new experimental evidence

2003 ◽  
Vol 263 (1) ◽  
pp. 119-132 ◽  
Author(s):  
Eduardo Méndez ◽  
Marı́a F. Cerdá ◽  
Ana M. Castro Luna ◽  
Carlos F. Zinola ◽  
Carlos Kremer ◽  
...  
Keyword(s):  
Experimental Evidence ◽  
Electrochemical Behavior ◽  
Critical Review ◽  
Noble Metals ◽  
Aqueous Acid

scholarly journals Nanobioconjugates for Signal Amplification in Electrochemical Biosensing

Molecules ◽  
2020 ◽  
Vol 25 (15) ◽  
pp. 3542
Author(s):  
Sebastian Cajigas ◽  
Jahir Orozco
Keyword(s):  
Quantum Dots ◽  
Hybrid Materials ◽  
Critical Review ◽  
Signal Amplification ◽  
Noble Metals ◽  
Detection Limits ◽  
Future Perspectives ◽  
Electrochemical Biosensing ◽  
Signal Response

Nanobioconjugates are hybrid materials that result from the coalescence of biomolecules and nanomaterials. They have emerged as a strategy to amplify the signal response in the biosensor field with the potential to enhance the sensitivity and detection limits of analytical assays. This critical review collects a myriad of strategies for the development of nanobioconjugates based on the conjugation of proteins, antibodies, carbohydrates, and DNA/RNA with noble metals, quantum dots, carbon- and magnetic-based nanomaterials, polymers, and complexes. It first discusses nanobioconjugates assembly and characterization to focus on the strategies to amplify a biorecognition event in biosensing, including molecular-, enzymatic-, and electroactive complex-based approaches. It provides some examples, current challenges, and future perspectives of nanobioconjugates for the amplification of signals in electrochemical biosensing.

scholarly journals Use of Gold Nanoparticles in Diagnostics, Surgery and Medicine: A Review

2013 ◽  
Vol 5 (2) ◽  
pp. 56-60 ◽  
Author(s):  
ASM Giasuddin ◽  
KA Jhuma ◽  
AM Mujibul Haq
Keyword(s):  
Gold Nanoparticles ◽  
Present Article ◽  
Critical Review ◽  
Biomedical Applications ◽  
Noble Metals ◽  
Therapeutic Agents ◽  
Tremendous Progress ◽  
Biological Interest ◽  
Low Toxicity

Noble metals and their compounds have a long and distinguished history as therapeutic agents in medicine. Recent years have seen tremendous progress in the design and study of nanomaterials geared towards biological and biomedical applications. Particularly gold nanoparticles have attracted intensive interest, because they are easily prepared, have low toxicity and can be readily attached to molecules of biological interest. The gold nanoparticles have become more precious than pretty gold because of their wide use and applications. The present article gave a critical review of the wide applications and uses of gold nanoparticles in diagnostics, surgery and medicine. DOI: http://dx.doi.org/10.3329/bjmb.v5i2.13346 Bangladesh J Med Biochem 2012; 5(2): 56-60

A Critical review about Haratala ( Orpiment )

2017 ◽  
Vol 2 (2) ◽  
Author(s):  
Pranav K. Shah ◽  
L. B. Singh ◽  
P. U. Vaishnav ◽  
Bharat Kalsariya
Keyword(s):  
Experimental Evidence ◽  
Intestinal Absorption ◽  
Critical Review ◽  
Skin Disease ◽  
Powdered Material ◽  
Inorganic Compound ◽  
Burning Sensation ◽  
Toxic Effects ◽  
High Degree

Haratala (Arsenic trisulphide) is an inorganic compound with the formula As2S3. The Haratala is used without proper purification the toxic effects are Daha (burning sensation), Kampaka (tremors), Toda (pricking pain), Kshobha, Pida, Raktadusti (vitiates blood), Kushta (skin disease), Malinikaroti Gatram, Vata Kapha Prakopatamaka Roga, Mrtyusankakara. Coarse powdered material is less toxic because it can be eliminated in faeces before it dissolves, experimental evidence has shown a high degree of gastro-intestinal absorption of both trivalent and pentavalent forms of arsenic. Arsenic is eliminated by many routes (faeces, urine, sweat, hair, skin, lungs) although most is excreted in urine of man.

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