Simple and Rapid Method by Sensitive Value of UV-Visible Spectrophotometric Determination of Copper (II) by Cloud Point Extraction

2020 ◽  
Vol 12 (7) ◽  
pp. 755-767
Author(s):  
Inas J. Mahdi
Keyword(s):  
Cloud Point ◽  
Rapid Method ◽  
Spectrophotometric Determination ◽  
Cloud Point Extraction ◽  
Uv Visible ◽  
Determination Of Copper

Optimization of an analytical method for the spectrophotometric determination of copper in tea and water samples after ultrasonic assisted cloud point extraction using a benzothiazole fluorescein derivative complexing agent

RSC Advances ◽  
2015 ◽  
Vol 5 (80) ◽  
pp. 65321-65327 ◽  
Author(s):  
Chunlei Fan ◽  
Shengxu Luo ◽  
Rong Liu
Keyword(s):  
Cloud Point ◽  
Spectrophotometric Determination ◽  
Water Samples ◽  
Analytical Method ◽  
Cloud Point Extraction ◽  
Complexing Agent ◽  
Ultrasonic Assisted ◽  
Determination Of Copper

BTF is exists with spirolactone species with adding Cu2+, which leads to the absorbance intensity is decreased gradually and the decrease of the absorbance value is linear for Cu2+.

scholarly journals Room temperature cloud point extraction: An application to preconcentration and spectrophotometric determination of copper(II)

2020 ◽  
Vol 85 (1) ◽  
pp. 89-96 ◽  
Author(s):  
Denys Snigur ◽  
Alexander Chebotarev ◽  
Vitaliy Dubovyi ◽  
Dmytro Barbalat ◽  
Anastasiia Klochkova
Keyword(s):  
Sulfuric Acid ◽  
Cloud Point ◽  
Spectrophotometric Determination ◽  
Cloud Point Extraction ◽  
Limit Of Detection ◽  
Extraction Procedure ◽  
Rich Phase ◽  
Triton X ◽  
Determination Of Copper

The novel cloud point extraction procedure for preconcentration of copper(II) was discovered. A simple chemical method for initiating the cloud point extraction (CPE) has been proposed. The formation of surfactant rich phase in a system containing a nonionic surfactant Triton X-100, copper(II), 6,7-dihydroxy-4-methyl-2-phenylbenzopyrilium chloride (DHMPhB) and ammonium benzoate is observed immediately upon the sulfuric acid addition into solution. Under the optimal conditions (absorption band maximum was 540 nm, concentration 1.5?10-4 mol dm-3 of DHMPhB, 1.0 vol.% of Triton X-100, 2.0 cm3 of 0.75 mol dm-3 ammonium benzoate, and 1.0 cm3 of 0.5 mol dm-3 sulfuric acid solution for obtaining benzoic?benzoate buffer solution with pH 4.5 and initiation immediate surfactant rich phase formation) the calibration plot for spectrophotometric determination of copper(II) was linear in the range of copper(II) concentration 0.02?0.95 ?g cm?3. The limit of detection was calculated 0.006 ?g cm?3. The water samples were analyzed according to a suggested procedure with satisfactory results.

Determination of copper in water samples by atomic absorption spectrometry after cloud point extraction

2006 ◽  
Vol 157 (3-4) ◽  
pp. 215-222 ◽  
Author(s):  
Valfredo Azevedo Lemos ◽  
Moacy Selis Santos ◽  
Márcio José Silva dos Santos ◽  
Daniel Rodrigues Vieira ◽  
Cleber Galvão Novaes
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Cloud Point ◽  
Water Samples ◽  
Cloud Point Extraction ◽  
Absorption Spectrometry ◽  
Determination Of Copper
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