Determination of ultra-trace levels of cobalt in water and wheat flour samples using cloud point extraction coupled with laser thermal lens spectrometry

2018 ◽  
Vol 10 (6) ◽  
pp. 634-640 ◽  
Author(s):  
Quan Han ◽  
Yanyan Huo ◽  
Xiaohui Yang ◽  
Yaping He ◽  
Jiangyan Wu ◽  
...  
Keyword(s):  
Cloud Point ◽  
Wheat Flour ◽  
Thermal Lens ◽  
Cloud Point Extraction ◽  
Thermal Lens Spectrometry ◽  
Highly Sensitive ◽  
Ultra Trace ◽  
Sensitive Method

A highly sensitive method for the determination of ultra-trace levels of cobalt using cloud point extraction (CPE) coupled with thermal lens spectrometry was proposed.

Determination of Cobalt in Water by Thermal Lens Spectrometry with Cloud Point Extraction

2015 ◽  
Vol 48 (13) ◽  
pp. 2096-2106 ◽  
Author(s):  
Quan Han ◽  
Yanyan Huo ◽  
Na Yang ◽  
Xiaohui Yang ◽  
Tiantian Hao
Keyword(s):  
Cloud Point ◽  
Thermal Lens ◽  
Cloud Point Extraction ◽  
Thermal Lens Spectrometry

scholarly journals Determination of Palladium in Water Samples Using Cloud Point Extraction Coupled with Laser Thermal Lens Spectrometry

2015 ◽  
Vol 59 (5) ◽  
pp. 407-412 ◽  
Author(s):  
Quan Han ◽  
Yanyan Huo ◽  
Na Yang ◽  
Xiaohui Yang ◽  
Yunhui Zhai ◽  
...  
Keyword(s):  
Cloud Point ◽  
Thermal Lens ◽  
Water Samples ◽  
Cloud Point Extraction ◽  
Thermal Lens Spectrometry

scholarly journals Enhanced dispersive solid phase extraction assisted by cloud point strategy prior to fluorometric determination of anti-hepatitis C drug velpatasvir in pharmaceutical tablets and body fluids

RSC Advances ◽  
2018 ◽  
Vol 8 (24) ◽  
pp. 13292-13300 ◽  
Author(s):  
Mohamed M. El-Wekil ◽  
Hassan Refat H. Ali ◽  
Adel A. Marzouk ◽  
Ramadan Ali
Keyword(s):  
Solid Phase Extraction ◽  
Cloud Point ◽  
Cloud Point Extraction ◽  
Solid Phase ◽  
Biological Fluids ◽  
Phase Extraction ◽  
Fluorometric Determination ◽  
Pharmaceutical Tablets ◽  
Highly Sensitive

Highly sensitive and selective solid phase extraction method combined with cloud point extraction strategy was developed for analysis of velpatasvir in its pharmaceutical tablets and biological fluids.

scholarly journals Cloud Point Extraction and Determination of Silver Ion in Real Sample using Bis((1H-benzo[d]imidazol-2yl)methyl)sulfane

2011 ◽  
Vol 8 (1) ◽  
pp. 435-442 ◽  
Author(s):  
Farshid Ahmadi ◽  
Khodabakhsh Niknam ◽  
Ebrahim Niknam ◽  
Saeid Delavari ◽  
Azadeh Khanmohammadi
Keyword(s):  
Cloud Point ◽  
High Efficiency ◽  
Cloud Point Extraction ◽  
Chelating Agent ◽  
Bath Temperature ◽  
Silver Ion ◽  
Complexing Agent ◽  
Ionic Surfactant ◽  
Ultra Trace

Bis((1H-benzo[d]imidazol-2yl)methyl)sulfane (BHIS) was used as a complexing agent in cloud point extraction for the first time and applied for selective pre-concentration of trace amounts of silver. The method is based on the extraction of silver at pH 8.0 by using non-ionic surfactant T-X114 and bis((1H-benzo[d]imidazol-2yl)methyl)sulfane as a chelating agent. The adopted concentrations for BHIS, Triton X-114 and HNO3, bath temperature, centrifuge rate and time were optimized. Detection limits (3SDb/m) of 1.7 along with enrichment factor of 39 for silver ion was achieved. The high efficiency of cloud point extraction to carry out the determination of analytes in complex matrices was demonstrated. The proposed method was successfully applied to the ultra-trace determination of silver in real samples.

Sign in / Sign up

Export Citation Format

Share Document