Potentiometry

Publication Title: 
Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy

Biologically inspired experimental process in synthesising nanoparticles is of great interest in present scenario. Biosynthesis of nanoparticles is considered to be one of the best green techniques in synthesising metal nanoparticles. Here, an in situ green biogenic synthesis of gold nanoparticles using aqueous extracts of Terminalia chebula as reducing and stabilizing agent is reported. Gold nanoparticles were confirmed by surface plasmon resonance in the range of 535 nm using UV-visible spectrometry.

Author(s): 
Kumar, Kesarla Mohan
Mandal, Badal Kumar
Sinha, Madhulika
Krishnakumar, Varadhan
Publication Title: 
Minerva Stomatologica

Transcutaneous electrical neural stimulation (l.f.-h.i. TENS), employed in dentistry, allows masticatory muscles relaxation, temporary clearance of muscular and periodontal proprioceptive input and even oro-facial pain relief. The mechanisms involved in this type of stimulation are not entirely clarified. According to the most recent neurophysiological researches, the authors describe several l.f.-h.i. TENS. action modalities.

Author(s): 
Galletti, S. P.
Bergamini, M.
Pantaleo, T.
Publication Title: 
Analytical Sciences: The International Journal of the Japan Society for Analytical Chemistry

An analytical method has been described for the determination of mercury using a carbon paste electrode. Conditions for the preparation of the carbon paste electrode were optimized for low background current in order to use it for the determination of ultra trace levels of mercury. The carbon paste electrode was found to be a good electrode material for the determination of mercury. The optimized pH for the determination was in the range of 2.5 to 3.5. The three sigma detection limit of mercury was obtained as 0.095 µg L(-1).

Author(s): 
Sahoo, S.
Satpati, A. K.
Reddy, A. V. R.
Publication Title: 
Analytical Sciences: The International Journal of the Japan Society for Analytical Chemistry

An analytical method has been described for the determination of mercury using a carbon paste electrode. Conditions for the preparation of the carbon paste electrode were optimized for low background current in order to use it for the determination of ultra trace levels of mercury. The carbon paste electrode was found to be a good electrode material for the determination of mercury. The optimized pH for the determination was in the range of 2.5 to 3.5. The three sigma detection limit of mercury was obtained as 0.095 µg L(-1).

Author(s): 
Sahoo, S.
Satpati, A. K.
Reddy, A. V. R.
Publication Title: 
Environmental Science and Pollution Research International

The construction and electrodes characteristics of poly(vinylchloride) (PVC)-based polymeric membrane electrode (PME) and coated graphite electrode (CGE), incorporating 1,3-alternate thiacalix[4]crown as ionophore for estimation of Hg(II) ions, are reported here. The best potential response was observed for PME-1 having membrane composition of: ionophore (6.2 mg), PVC (100.0 mg), 2-nitrophenyl octyl ether (2-NPOE; 200.0 mg), and sodium tetraphenyl borate (NaTPB; 2.0 mg); for CGE-1 with the membrane composition: ionophore (3.5 mg), PVC (40.0 mg), 2-NPOE (80.0 mg), and NaTPB (2.0 mg).

Author(s): 
Mahajan, Rakesh Kumar
Kamal, Ajar
Kumar, Naresh
Bhalla, Vandana
Kumar, Manoj
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