Design and optimization of sensitive analytical spectrophotometric method for micro determination of copper(II) from e-waste by using of novel chromogenic extractant

2021 ◽  
pp. 120502
Author(s):  
Sangram B. Kharade ◽  
Rajvardhan K. Chougale ◽  
Umesh B. Barache ◽  
Kallappa R. Sanadi ◽  
Kishan C. Rathod ◽  
...  
Keyword(s):  
Spectrophotometric Method ◽  
Design And Optimization ◽  
Determination Of Copper

Collaborative Study Using Atomic Absorption Spectrophotometry for the Determination of Copper in Alcoholic Products

1967 ◽  
Vol 50 (2) ◽  
pp. 338-339
Author(s):  
Duane H Strunk ◽  
A A Andreasen
Keyword(s):  
Atomic Absorption ◽  
Spectrophotometric Method ◽  
Collaborative Study ◽  
Atomic Absorption Spectrophotometry ◽  
Good Precision ◽  
Absorption Method ◽  
Standard Curve ◽  
Absorption Spectrophotometry ◽  
Determination Of Copper

Abstract A collaborative study was conducted on the 'atomic absorption spectrophotometric method for measuring the concentration of copper in alcoholic products. In this method, the samples are aspirated directly into the burner of the instrument, and the absorhance values are converted to ppm copper by reference to a standard curve. Data show good precision and are comparable to those obtained by the ZDBT method. It is recommended that the atomic absorption method be adopted as official, first action.

scholarly journals Third Derivative Spectrophotometric Method for Simultaneous Determination of Copper and Nickel Using 6-(2-Naphthyl)-2, 3-dihydro-1,2,4- triazine-3-thione

2011 ◽  
Vol 8 (2) ◽  
pp. 587-593 ◽  
Author(s):  
Maliheh Barazandeh Tehrani ◽  
Effat Souri
Keyword(s):  
Simultaneous Determination ◽  
Spectrophotometric Method ◽  
Limit Of Detection ◽  
Alloy Sample ◽  
Zero Crossing ◽  
Determination Of Nickel ◽  
Analytical Reagent ◽  
Third Derivative ◽  
Determination Of Copper

A simple and sensitive derivative spectrophotometric method for simultaneous determination of nickel and copper using 6-(2- naphthyl)-2,3-dihydro-1,2,4-triazine-3-thione (NDTT) as a selective analytical reagent was developed. The complexes of metal ions with NDTT were formed immediately in basic media and extracted with chloroform. The zero-crossing measurement technique was found suitable for the direct measurement of the third-derivative value of Ni-NDTT and Cu-NDTT at 501 and 472 nm respectively. Beer’s law is obeyed in the concentration range 1-30 μg/mL for both cations with different ratios. The limit of detection was 0.26 μg/mL and 0.13 μg/mL for copper and nickel respectively. The within day and between day variations showed coefficient of variation (CV%) values less than 2.80 and 2.97 for copper and nickel respectively. The error of the determination method did not exceed 6.50%. Analysis of alloy sample showed that this method can be successfully used for simultaneous determination of Cu and Ni in real samples.

scholarly journals Determination of Nitrites in Commercial Sausages by Anthocyanins Degradation. Experimental Design and Optimization

2017 ◽  
Vol 58 (2) ◽  
Author(s):  
Carlos Andrés Galán-Vidal ◽  
Araceli Castañeda-Ovando ◽  
Ma. Elena Páez-Hernández ◽  
Elizabeth Contreras-López
Keyword(s):  
Statistical Analysis ◽  
Experimental Design ◽  
Spectrophotometric Method ◽  
Colorimetric Method ◽  
Linear Calibration ◽  
Design And Optimization ◽  
Control Factors ◽  
Main Factors ◽  
Experimental Design And Optimization

<p>With the purpose of obtaining the main factors in the nitrite quantification by bleaching Roselle anthocyanins, an experimental design (2<sup>3</sup>) was carried out. The control factors were ultrasound, time and temperature at two levels (−, +). Results for sausages analysis were obtained by the colorimetric method of AOAC 973.31, and the proposed spectrophotometric method. Statistical analysis show that results do not differ significantly. A better linear calibration range is obtained using this new method. The main advantage is the reagents that are used are cheaper.</p>

Modified spectrophotometric method for the determination of copper in urine

1980 ◽  
Vol 61 (6) ◽  
pp. 58-59
Author(s):  
N. A. Roshina
Keyword(s):  
Ion Exchange ◽  
Spectrophotometric Method ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Free Metal ◽  
Determination Of Copper

The principle of our proposed method consists in the sorption of copper-containing urine compounds on an ion-exchange resin (Elgostat type) with the subsequent liberation of the free metal and its spectrophotometry determination in the form of a diethyldithio-carbamate complex.

An automated in-chip-catalytic–spectrophotometric method for determination of copper(ii) using a multisyringe flow injection analysis-multipumping flow system

2014 ◽  
Vol 6 (21) ◽  
pp. 8494-8504 ◽  
Author(s):  
Piyawan Phansi ◽  
Camelia Henríquez ◽  
Edwin Palacio ◽  
Duangjai Nacapricha ◽  
Víctor Cerdà
Keyword(s):  
Flow Injection ◽  
Flow Injection Analysis ◽  
Spectrophotometric Method ◽  
Flow System ◽  
Multisyringe Flow Injection Analysis ◽  
System P ◽  
Determination Of Copper

An automated in-chip-catalytic–spectrophotometric method for determination of copper(ii) using a multisyringe flow injection analysis-multipumping flow system (Chip–MSFIA–MPFS).

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