CLOUD POINT EXTRACTION PROCEDURE FOR FLAME ATOMIC ABSORPTION SPECTROMETRIC DETERMINATION OF HEAVY METALS IN SURFACE SEDIMENTS OF CHAOHU LAKE, CHINA

2014 ◽  
Vol 13 (5) ◽  
pp. 1041-1046 ◽  
Author(s):  
Zhixia Zheng ◽  
Wanli Huang
Keyword(s):  
Heavy Metals ◽  
Atomic Absorption ◽  
Cloud Point ◽  
Surface Sediments ◽  
Cloud Point Extraction ◽  
Extraction Procedure ◽  
Chaohu Lake ◽  
Flame Atomic Absorption ◽  
Atomic Absorption Spectrometric

Development of a new sequential injection in-line cloud point extraction system for flame atomic absorption spectrometric determination of manganese in food samples

Talanta ◽  
2008 ◽  
Vol 77 (1) ◽  
pp. 388-393 ◽  
Author(s):  
Valfredo Azevedo Lemos ◽  
Patrícia Xavier Baliza ◽  
Anaildes Lago de Carvalho ◽  
Rafael Vasconcelos Oliveira ◽  
Leonardo Sena Gomes Teixeira ◽  
...  
Keyword(s):  
Atomic Absorption ◽  
Cloud Point ◽  
Cloud Point Extraction ◽  
Food Samples ◽  
Extraction System ◽  
Sequential Injection ◽  
Flame Atomic Absorption ◽  
Atomic Absorption Spectrometric

scholarly journals A Cloud Point Extraction Procedure for Preconcentration/Flame Atomic Absorption Spectrometric Determination of Silver, Zinc, and Lead at Subtrace Levels in Environmental Samples

2009 ◽  
Vol 92 (3) ◽  
pp. 907-913 ◽  
Author(s):  
Mehrorang Ghaedi ◽  
Ardeshir Shokrollahi ◽  
Khodabakhsh Niknam ◽  
Ebrahim Niknam ◽  
Somayyeh Derki ◽  
...  
Keyword(s):  
Atomic Absorption ◽  
Cloud Point ◽  
Cloud Point Extraction ◽  
Extraction Procedure ◽  
Absorption Spectrometry ◽  
Effective Parameters ◽  
Rich Phase ◽  
Flame Atomic Absorption ◽  
Triton X

Abstract A cloud point extraction (CPE) procedure was presented for the preconcentration of silver, zinc, and lead ions in various samples. The complexes of these metal ions with 2-(((1H-benzo[d]imidazol-2-yl)methoxy)methyl)-1H-benzo[d]imidazole (BIMMBI) are quantitatively extracted into the Triton X-114-rich phase after centrifugation. A solution of 1.0 M HNO3 in methanol was added to the surfactant-rich phase as the effective eluant before analysis by flame atomic absorption spectrometry. The influence of effective parameters such as the concentrations of BIMMBI, Triton X-114, and HNO3, pH, bath temperature, centrifuge rate, and time on method sensitivity and efficiency was optimized. Detection limits of 2.8, 1.7, and 1.1 ng/mL for Pb2+, Ag+, and Zn2+, respectively, along with a preconcentration factor of 30 and enrichment factors of 33, 48, and 53 for Pb2+, Ag+, and Zn2+, respectively, were obtained. The present CPE method is suitable for accurate and precise determination of trace amounts of analyte ions in complex matrixes. The proposed CPE procedure was applied to the determination of these ions in biological, natural water, wastewater, soil, and blood samples.

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