Application of ionic-liquid supported cloud point extraction for the determination of microcystin-leucine-arginine in natural waters

Shruti Pavagadhi; Chanbasha Basheer; Rajasekhar Balasubramanian

doi:10.1016/j.aca.2010.11.039

Application of ionic-liquid supported cloud point extraction for the determination of microcystin-leucine-arginine in natural waters

Shruti Pavagadhi, Chanbasha Basheer, Rajasekhar Balasubramanian^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

A cloud point extraction method has been developed using an ionic liquid (1-butyl-3-methylimidazolium hexafluorophosphate, BMiM PF₆) for the determination of a widely studied cyanotoxin (microcystin leucine-arginine, MCLR) in natural waters. Extraction parameters such as sample pH, extraction temperature, extraction time, the amount of ionic liquid and the amount of extraction volume were investigated and optimized to achieve the maximum extraction efficiency. The results obtained indicated a good linearity with the correlation coefficient of 0.995 over the range of 0.5-50μgL^-1. The relative standard deviation (RSD) of the method was 7.5% (n=6). The calculated method detection limit was 0.03μgL^-1 (n=6). The practical applicability of the technique was demonstrated by analyzing water samples (n=9) collected from three different sites in local reservoirs.

Original language	English
Pages (from-to)	87-92
Number of pages	6
Journal	Analytica Chimica Acta
Volume	686
Issue number	1-2
DOIs	https://doi.org/10.1016/j.aca.2010.11.039
State	Published - 7 Feb 2011

Keywords

Environmental applications
Ionic liquids
Microcystin-LR
Microextraction
Preconcentration

ASJC Scopus subject areas

Analytical Chemistry
Biochemistry
Environmental Chemistry
Spectroscopy

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title = "Application of ionic-liquid supported cloud point extraction for the determination of microcystin-leucine-arginine in natural waters",

abstract = "A cloud point extraction method has been developed using an ionic liquid (1-butyl-3-methylimidazolium hexafluorophosphate, BMiM PF6) for the determination of a widely studied cyanotoxin (microcystin leucine-arginine, MCLR) in natural waters. Extraction parameters such as sample pH, extraction temperature, extraction time, the amount of ionic liquid and the amount of extraction volume were investigated and optimized to achieve the maximum extraction efficiency. The results obtained indicated a good linearity with the correlation coefficient of 0.995 over the range of 0.5-50μgL-1. The relative standard deviation (RSD) of the method was 7.5\% (n=6). The calculated method detection limit was 0.03μgL-1 (n=6). The practical applicability of the technique was demonstrated by analyzing water samples (n=9) collected from three different sites in local reservoirs.",

keywords = "Environmental applications, Ionic liquids, Microcystin-LR, Microextraction, Preconcentration",

author = "Shruti Pavagadhi and Chanbasha Basheer and Rajasekhar Balasubramanian",

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T1 - Application of ionic-liquid supported cloud point extraction for the determination of microcystin-leucine-arginine in natural waters

AU - Pavagadhi, Shruti

AU - Basheer, Chanbasha

AU - Balasubramanian, Rajasekhar

PY - 2011/2/7

Y1 - 2011/2/7

N2 - A cloud point extraction method has been developed using an ionic liquid (1-butyl-3-methylimidazolium hexafluorophosphate, BMiM PF6) for the determination of a widely studied cyanotoxin (microcystin leucine-arginine, MCLR) in natural waters. Extraction parameters such as sample pH, extraction temperature, extraction time, the amount of ionic liquid and the amount of extraction volume were investigated and optimized to achieve the maximum extraction efficiency. The results obtained indicated a good linearity with the correlation coefficient of 0.995 over the range of 0.5-50μgL-1. The relative standard deviation (RSD) of the method was 7.5% (n=6). The calculated method detection limit was 0.03μgL-1 (n=6). The practical applicability of the technique was demonstrated by analyzing water samples (n=9) collected from three different sites in local reservoirs.

AB - A cloud point extraction method has been developed using an ionic liquid (1-butyl-3-methylimidazolium hexafluorophosphate, BMiM PF6) for the determination of a widely studied cyanotoxin (microcystin leucine-arginine, MCLR) in natural waters. Extraction parameters such as sample pH, extraction temperature, extraction time, the amount of ionic liquid and the amount of extraction volume were investigated and optimized to achieve the maximum extraction efficiency. The results obtained indicated a good linearity with the correlation coefficient of 0.995 over the range of 0.5-50μgL-1. The relative standard deviation (RSD) of the method was 7.5% (n=6). The calculated method detection limit was 0.03μgL-1 (n=6). The practical applicability of the technique was demonstrated by analyzing water samples (n=9) collected from three different sites in local reservoirs.

KW - Environmental applications

KW - Ionic liquids

KW - Microcystin-LR

KW - Microextraction

KW - Preconcentration

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IS - 1-2

ER -

Application of ionic-liquid supported cloud point extraction for the determination of microcystin-leucine-arginine in natural waters

Abstract

Keywords

ASJC Scopus subject areas

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