A novel approach to explore organochalcogen chemistry of tellurium based receptor for selective determination of silver ions in aqueous medium

Polyhedron ◽  
2017 ◽  
Vol 125 ◽  
pp. 238-245 ◽  
Author(s):  
Aman K.K. Bhasin ◽  
Jasminder Singh ◽  
Harjit Singh ◽  
Pushap Raj ◽  
Narinder Singh ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Silver Ions ◽  
Selective Determination ◽  
Novel Approach

scholarly journals Derivative Spectrophotometric Analysis of 4-Quinolone Antibacterials in Formulations and Spiked Biological Fluids by Their Cu(II) Complexes

2001 ◽  
Vol 84 (2) ◽  
pp. 368-375 ◽  
Author(s):  
Mohammed Rizk ◽  
Fathalla Belal ◽  
Fawiza Ibrahim ◽  
Soad Ahmed ◽  
Zeinab A Sheribah
Keyword(s):  
Aqueous Medium ◽  
Linear Correlation ◽  
Analytical Procedure ◽  
Biological Fluids ◽  
Reference Method ◽  
Spectrophotometric Analysis ◽  
Third Order ◽  
Selective Determination ◽  
Average Percentage

Abstract A derivative UV-spectrophotometric analytical procedure was developed for determination of three 4-quinolone antibacterials: norfloxacin (NFX), ciprofloxacin (CFX), and sparfloxacin (SFX). The method depends on the complexation of Cu(II) with the studied compounds in aqueous medium. A third order, measurement was applied for their quantification. A linear correlation was established between the amplitude of the peak and concentration for all the studied drugs in the range of 15–80, 35–120, and 200–700 ng/mL, with minimum detectability (S/N = 2) of 1.0, 1.3, and 5.1 ng/mL for NFX, CFX, and SFX, respectively. The method was successfully applied for accurate, sensitive, and selective determination of the studied drugs in bulk and tablets formulation with average percentage recoveries of 99.22 ± 0.55 to 100.33 ± 1.60. The results obtained were favorably compared with those of the reference method. The method was also used to determine sparfloxacin in spiked human plasma and urine. The results obtained were satisfactory, accurate, and precise.

Novel electrochemical DNA hybridization biosensors for selective determination of silver ions

Talanta ◽  
2015 ◽  
Vol 144 ◽  
pp. 619-626 ◽  
Author(s):  
Maryam Ebrahimi ◽  
Jahan Bakhsh Raoof ◽  
Reza Ojani
Keyword(s):  
Dna Hybridization ◽  
Silver Ions ◽  
Selective Determination

Selective Determination of Silver Metal Ion Using Polyamine‐Based Ratiometric Chemosensor in an Aqueous Medium and Its Real‐Time Applicability as a Silver Sink

2018 ◽  
Vol 3 (27) ◽  
pp. 7792-7799 ◽  
Author(s):  
Meenakshi Verma ◽  
Amanpreet Kaur ◽  
Harpreet Kaur ◽  
Navneet Kaur ◽  
Narinder Singh
Keyword(s):  
Aqueous Medium ◽  
Real Time ◽  
Metal Ion ◽  
Selective Determination ◽  
Silver Metal

scholarly journals Green Synthesis of Blue Fluorescent P-doped Carbon Dots for the Selective Determination of Picric Acid in an Aqueous Medium

2019 ◽  
Vol 35 (2) ◽  
pp. 147-152 ◽  
Author(s):  
Yan Jun JU ◽  
Na LI ◽  
Shi Gang LIU ◽  
Yu Zhu FAN ◽  
Yu LING ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Aqueous Medium ◽  
Carbon Dots ◽  
Picric Acid ◽  
Selective Determination ◽  
Doped Carbon Dots

Selective Determination of Melamine in Aqueous Medium by Molecularly Imprinted Solid Phase Extraction

2010 ◽  
Vol 58 (22) ◽  
pp. 11883-11887 ◽  
Author(s):  
Manuela Curcio ◽  
Francesco Puoci ◽  
Giuseppe Cirillo ◽  
Francesca Iemma ◽  
Umile Gianfranco Spizzirri ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Aqueous Medium ◽  
Solid Phase ◽  
Phase Extraction ◽  
Molecularly Imprinted ◽  
Selective Determination

The Use of TMAH to Etch Silicon and Expose Metal Bridging Failures

2000 ◽  
Author(s):  
Mark Morris ◽  
James Mohr ◽  
Esteban Ortiz ◽  
Steven Englebretson
Keyword(s):  
Failure Mechanism ◽  
Schottky Diodes ◽  
Tetramethylammonium Hydroxide ◽  
Novel Approach ◽  
Failure Location ◽  
Metal Etching ◽  
Plastic Mold

Abstract Determination of metal bridging failures on plastic encapsulated devices is difficult due to the metal etching effects that occur while removing many of the plastic mold compounds. Typically, the acids used to remove the encapsulation are corrosive to the metals that are found within the device. Thus, decapsulation can result in removal of the failure mechanism. Mechanical techniques are often not successful due to damage that results in destruction of the die and failure mechanism. This paper discusses a novel approach to these types of failures using a silicon etch and a backside evaluation. The desirable characteristics of the technique would be to remove the silicon and leave typical device metals unaffected. It would also be preferable that the device passivation and oxides not be etched so that the failure location is not disturbed. The use of Tetramethylammonium Hydroxide (TMAH), was found to fit these prerequisites. The technique was tested on clip attached Schottky diodes that exhibited resistive shorting. The use of the TMAH technique was successful at exposing thin solder bridges that extruded over the edge of the die resulting in failure.

Sign in / Sign up

Export Citation Format

Share Document