TITLE

Ultrasonic extraction followed by sulfuric acid silica gel cleanup for the determination of a-hexachlorocyclohexane enantiomers in biota samples

AUTHOR(S)
Rusong Zhao; Shaogang Chu; Rongbiao Zhao; Xiaobai Xu; Xiufen Liu
PUB. DATE
March 2005
SOURCE
Analytical & Bioanalytical Chemistry;Mar2005, Vol. 381 Issue 6, p1248
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Interest in the analysis of a-hexachlorocyclohexane (a-HCH) enantiomers as an alternative or complementary approach to elucidating isomer ratios of a/?-HCH has grown in recent years because it can provide useful information to evaluate the influence of different degradation and transformation processes. In this paper, a simple and rapid method for the determination of a-HCH enantiomers in biota samples is described. The method developed consists of ultrasonic extraction, sulfuric acid silica gel cleanup, solid-phase extraction (SPE) column fractionation, and final determination with chiral high-resolution gas chromatography. Ultrasonic extraction greatly shortens the extraction process time, and the sulfuric acid silica gel and SPE cleanup perfectly remove lipids and other interference compounds in the lipid-rich samples. The method is found to be simple, less time-consuming, and easy to operate, thus providing a useful alternative method to assess the enantioselective breakdown of a-HCH in biota system.
ACCESSION #
16526162

 

Related Articles

  • Solid-Phase Extraction.  // LC-GC North America;Jan2008, Vol. 26 Issue 1, p14 

    The article provides information on the market trend of the solid-phase extraction (SPE) in the U.S. SPE regulates the capability of the vendors to provide specific application support, especially in clinical sciences, toxicology and pesticides. It can be divided into three product types such as...

  • GC-MS investigations. II. Lipid composition of Stevia rebaudiana. Korobko, N. V.; Turko, Ya. A.; Shokun, V. V.; Chernyak, E. N.; Pokrovskii, L. M.; Smetankina, O. N.; Kerimzhanova, B. F.; Baltaev, U. A. // Chemistry of Natural Compounds;May2008, Vol. 44 Issue 3, p359 

    The article presents a study which examines the components from leaves of Stevia rebaudiana Bertoni and the composition of fatty acids and alcohol of neutral lipids. The extractions of air-dried and ground raw materials with petroleum ether is done at room temperature. Substances that were used...

  • Adsorption of Anions V(V), Cr(VI), Mo(VI) and W(VI) by Silica Gel with Anchored Carboxymethylated Polyhexamethyleneguanidine. Dadashev, A. D.; Tertykh, V. A.; Yanovska, E. S.; Gil, A. A.; Yanova, K. V.; Kutjanina, V. S. // Chemistry, Physics & Technology of Surface / Khimiya, Fizyka ta ;Oct2011, Vol. 2 Issue 3, p331 

    Carboxymethylated polyhexamethyleneguanidine has been chemically bound with modified silica surface and synthesized composite has been characterized. Adsorption properties of obtained adsorbent have been studied with respect to metal-containing anions of V(V), Cr(VI), Mo(VI) and W(VI). The...

  • Extraction of lipids and purification of linoleic acid from Clarias macrocephalus oil. Zainuddin, Noorul Jannah; Babji, Abdul Salam; Said, Mamot // Aquaculture, Aquarium, Conservation & Legislation - Internationa;Jul2011, Vol. 4 Issue 3, p423 

    Fatty acid composition of "keli" (Clarias macrocephalus) oil has been shown to contain 18.4% of linoleic acid (LA). Oil was obtained from three types of extraction methods namely Blight & Dryer method, Soxhlet method, and pressing method. Blight & Dryer method produced acceptable total lipid...

  • Solid-Phase Microextraction. Hinshaw, John V. // LC-GC Europe;Dec2003, Vol. 16 Issue 12, p803 

    Discusses solid-phase microextraction (SPME). Potential to reduce or eliminate solvent consumption; Various applications of SPME; Use of SPME in gas chromatography and liquid chromatography separations; Difference from solid-phase extraction; Advantages of SPME over other sample preparation and...

  • Automated method for the determination of vitamin D3 hydroxymetabolites in serum. Mata-Granados, J. M.; Caballo-L�pez, A.; Luque de Castro, M. D.; Quesada, J. M. // Analytical & Bioanalytical Chemistry;Sep2003, Vol. 377 Issue 2, p287 

    An almost automated method for the determination of hydroxymetabolites of vitamin D3 (cholecalciferol) in human serum is reported. The method consists of three steps: 1) a batch liquid�liquid extraction step with 2-propanol and hexane, and drying of the extract and reconstitution with...

  • High Throughput Extraction of Melamine using EVOLUTE CX Mixed-mode SPE Plates. Williams, Lee; Caulfield, Joanna // LC-GC Europe;Jul/Aug2009, Vol. 22 Issue 7, p16 

    The use of EVOLUTE CX mixed-mode columns provides high and consistent recoveries across a range of complex matrices, from biological fluids to milk products. The dual retention mechanism ensures that matrix components such as proteins, salts and phospholipids are removed, resulting in lower ion...

  • Solid-Phase Extraction.  // LC-GC North America;Jan2010, Vol. 28 Issue 1, p14 

    The article discusses the development of the laboratory technique solid-phase extraction (SPE). It notes that SPE provides the chromatography market a specific application support which includes clinical sciences, pharmaceuticals, and residues analysis. It mentions on the three segments of...

  • Amberlite XAD-4 Impregnated With a New Pentadentate Schiff base: a Chelating Collector for Separation and Preconcentration of Trace Amounts of Gallium (III) and Indium (III). Saberyan, Kamal; Zolfonoun, Ehsan; Shamsipur, Mojtaba; Salavati-Niasari, Masoud // Acta Chimica Slovenica;2010, Vol. 57 Issue 1, p222 

    A new solid-phase extraction method for separation and preconcentration of trace amounts of Ga(III) and In(III) in biological and water samples is proposed. The procedure is based on the adsorption of Ga(III) and In(III) ions on a column of Amberlite XAD-4 resin loaded with newly-synthesized...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics