Cloud Point Extraction With Triton X-114 for Separation of Metsulfuron-Methyl, Chlorsulfuron, and Bensulfuron-Methyl From Water, Soil, and Rice and Analysis by High-Performance Liquid Chromatography.

19:41 EDT 22nd May 2015 | BioPortfolio

Summary of "Cloud Point Extraction With Triton X-114 for Separation of Metsulfuron-Methyl, Chlorsulfuron, and Bensulfuron-Methyl From Water, Soil, and Rice and Analysis by High-Performance Liquid Chromatography."

A new and efficient analytic methodology based on cloud point extraction (CPE) was developed for determination of pesticide residues of metsulfuron-methyl (MSM), chlorsulfuron (CS), and bensulfuron-methyl (BSM) in water, soil, and rice grain by high-performance liquid chromatography (HPLC). Multiple experimental conditions that affected CPE efficiency-including surfactant type and concentration, equilibration temperature and duration, ionic strength, and solution pH were identified. CPE conditions were optimized as follows: 1.5% Triton X-114 (w/v), 12% Na(2)SO(4) (w/v) solution (pH 2.0), and heat-assisted at 50°C for 15 min. The calibration curves for all analytes were linear, ranging from 0.05 to 4.0 mg L(-1), with the correlation coefficients >0.9995 by HPLC-ultraviolet detector and were linear, ranging from 0.004 to 2.0 mg L(-1), with correlation coefficients >0.9983 by CPE-HPLC. The average recoveries at the three spiked levels using CPE ranged from 86.0% to 94.5% for water samples with relative SDs (RSDs) of 0.4% to approximately 7.8%; from 85.6% to 94.8% for soil samples with RSDs of 1.2% to approximately 9.5%; and from 81.9% to 91.3% for rice samples with RSDs of 1.7% to approximately 5.8%. The proposed CPE-HPLC method can be successfully used to analyze MSM, CS, and BSM residues from contaminated water, soil, and rice grain samples.


Jiangsu Key Laboratory of Pesticide Science, College of Science, Nanjing Agricultural University, Nanjing, 210095, China.

Journal Details

This article was published in the following journal.

Name: Archives of environmental contamination and toxicology
ISSN: 1432-0703


PubMed Articles [8794 Associated PubMed Articles listed on BioPortfolio]

Application of mixed cloud point extraction for the analysis of six flavonoids in Apocynum venetum leaf samples by high performance liquid chromatography.

A simple, inexpensive and efficient method based on the mixed cloud point extraction (MCPE) combined with high performance liquid chromatography was developed for the simultaneous separation and deter...

Sorption, desorption and leaching potential of sulfonylurea herbicides in Argentinean soils.

The sulfonylurea (SUs) herbicides are used to control broadleaf weeds and some grasses in a variety of crops. They have become popular because of their low application rates, low mammalian toxicity an...

A Novel Method Applied in Determination and Assessment of Trace Amount of Lead and Cadmium in Rice from Four Provinces, China.

Heavy metal contamination of soils or water can lead to excessive lead (Pb) and cadmium (Cd) levels in rice. As cumulative poisons, consumption of Pb and Cd in contaminated rice may cause many toxic e...

Comparison of ultrasound-assisted cloud point extraction and ultrasound-assisted dispersive liquid liquid microextraction for copper coupled with spectrophotometric determination.

In this work, ultrasound-assisted cloud point extraction (UA-CPE) and ultrasound-assisted dispersive liquid liquid microextraction (UA-DLLME) were investigated and compared firstly as ultrasound-assis...

Application of Optimized Vortex-Assisted Surfactant-Enhanced DLLME for Preconcentration of Thymol and Carvacrol, and Their Determination by HPLC-UV: Response Surface Methodology.

A novel vortex-assisted surfactant-enhanced dispersive liquid-liquid microextraction combined with high-performance liquid chromatography (VASEDLLME-HPLC) was developed for the determination of thymol...

Clinical Trials [722 Associated Clinical Trials listed on BioPortfolio]

TAFF-Psychological Treatment of Separation Anxiety Disorder

The purpose of this study is to determine whether a specific family based cognitive behavioral treatment program is effective in the treatment of children with separation anxiety disorder.

An Assessment of Bone Augmentation in Post-Extraction Sockets

When a tooth is extracted the ridge of bone that held the tooth in place begins to heal and over time new bone grows to fill the empty space left by the missing tooth. Sometimes this proce...

Tooth Extraction With Deep Sedation in Children: A Retrospective Study

In this study it's aimed to evaluated the patients in whom dental local anesthetic attempts were failed due to anxiety or fear and referred to our clinic for tooth extraction with deep ...

Se-Methyl-Seleno-L-Cysteine or Selenomethionine in Preventing Prostate Cancer in Healthy Participants

This randomized phase I trial studies the side effects and the best dose of Se-methyl-seleno-L-cysteine or selenomethionine in preventing prostate cancer in healthy participants. Chemoprev...

1-Methyl-D-Tryptophan in Treating Patients With Metastatic or Refractory Solid Tumors That Cannot Be Removed By Surgery

RATIONALE: Biological therapies, such as 1-methyl-D-tryptophan, may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth and by stimulating the immune syst...

Medical and Biotech [MESH] Definitions

Use of various chemical separation and extraction methods, such as SOLID PHASE EXTRACTION; CHROMATOGRAPHY; and SUPERCRITICAL FLUID EXTRACTION; to prepare samples for analytical measurement of components.

The length of the face determined by the distance of separation of jaws. Occlusal vertical dimension (OVD or VDO) or contact vertical dimension is the lower face height with the teeth in centric occlusion. Rest vertical dimension (VDR) is the lower face height measured from a chin point to a point just below the nose, with the mandible in rest position. (From Jablonski, Dictionary of Dentistry, 1992, p250)

The selective extraction of deciduous teeth during the stage of mixed dentition in accordance with the shedding and eruption of the teeth. It is done over an extended period to allow autonomous adjustment to relieve crowding of the dental arches during the eruption of the lateral incisors, canines, and premolars, eventually involving the extraction of the first premolar teeth. (Dorland, 28th ed)

The separation of individuals or groups resulting in the lack of or minimizing of social contact and/or communication. This separation may be accomplished by physical separation, by social barriers and by psychological mechanisms. In the latter, there may be interaction but no real communication.

The separation of particles from a suspension by passage through a filter with very fine pores. In ultrafiltration the separation is accomplished by convective transport; in DIALYSIS separation relies instead upon differential diffusion. Ultrafiltration occurs naturally and is a laboratory procedure. Artificial ultrafiltration of the blood is referred to as HEMOFILTRATION or HEMODIAFILTRATION (if combined with HEMODIALYSIS).

Search BioPortfolio:

Searches Linking to this Article