[Determination of fenbutatin oxide residue in orange products by gas chromatography].
Identifieur interne : 000B49 ( Ncbi/Merge ); précédent : 000B48; suivant : 000B50[Determination of fenbutatin oxide residue in orange products by gas chromatography].
Auteurs : Zhixing Liu [République populaire de Chine] ; Ping Guo ; Yuanxing Wang ; Chunrui Zhan ; Haigen ZuoSource :
- Se pu = Chinese journal of chromatography [ 1000-8713 ] ; 2009.
English descriptors
- KwdEn :
- MESH :
- chemical , analysis : Organotin Compounds, Pesticide Residues.
- chemistry : Citrus sinensis.
- Chromatography, Gas.
Abstract
An analytical method for the determination of fenbutatin oxide (FBT) residue in oranges by capillary gas chromatography-flame photometric detection (GC-FPD) was developed. The FBT was extracted with acetone-acetic acid (99:1, v/v) and hexane, filtered and evaporated by nitrogen evaporator in a water bath at 35 degrees C. The residue was dissolved in hexane. The FBT in the solvent was derivatized with ethyl magnesium bromide for 15 min, 1 mol/L hydrochloride was added, the supernatant was collected and the solvent was evaporated to get dry supernatants, then the supernatant was dissolved in hexane and cleaned up with a silica solid phase extraction column, eluted with 5 mL hexane-dichloromethane (4:1, v/v), determined by GC. The standard curve was linear in the range of 0.2-2.0 mg/L. The correlation coefficients (r) were more than 0. 999 5, the average recoveries were 79.6%-109.6% with the relative standard deviations (RSDs) of 3.60%-9.04% at the spiked levels of 0.1-0.4 mg/kg, and the detection limit of fenbutatin oxide was 0.1 mg/kg. This method is suitable for the analysis of fenbutatin oxide residue in orange products.
PubMed: 20352927
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pubmed:20352927Le document en format XML
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<author><name sortKey="Liu, Zhixing" sort="Liu, Zhixing" uniqKey="Liu Z" first="Zhixing" last="Liu">Zhixing Liu</name>
<affiliation wicri:level="1"><nlm:affiliation>State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.</nlm:affiliation>
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<author><name sortKey="Wang, Yuanxing" sort="Wang, Yuanxing" uniqKey="Wang Y" first="Yuanxing" last="Wang">Yuanxing Wang</name>
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<front><div type="abstract" xml:lang="en">An analytical method for the determination of fenbutatin oxide (FBT) residue in oranges by capillary gas chromatography-flame photometric detection (GC-FPD) was developed. The FBT was extracted with acetone-acetic acid (99:1, v/v) and hexane, filtered and evaporated by nitrogen evaporator in a water bath at 35 degrees C. The residue was dissolved in hexane. The FBT in the solvent was derivatized with ethyl magnesium bromide for 15 min, 1 mol/L hydrochloride was added, the supernatant was collected and the solvent was evaporated to get dry supernatants, then the supernatant was dissolved in hexane and cleaned up with a silica solid phase extraction column, eluted with 5 mL hexane-dichloromethane (4:1, v/v), determined by GC. The standard curve was linear in the range of 0.2-2.0 mg/L. The correlation coefficients (r) were more than 0. 999 5, the average recoveries were 79.6%-109.6% with the relative standard deviations (RSDs) of 3.60%-9.04% at the spiked levels of 0.1-0.4 mg/kg, and the detection limit of fenbutatin oxide was 0.1 mg/kg. This method is suitable for the analysis of fenbutatin oxide residue in orange products.</div>
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<Abstract><AbstractText>An analytical method for the determination of fenbutatin oxide (FBT) residue in oranges by capillary gas chromatography-flame photometric detection (GC-FPD) was developed. The FBT was extracted with acetone-acetic acid (99:1, v/v) and hexane, filtered and evaporated by nitrogen evaporator in a water bath at 35 degrees C. The residue was dissolved in hexane. The FBT in the solvent was derivatized with ethyl magnesium bromide for 15 min, 1 mol/L hydrochloride was added, the supernatant was collected and the solvent was evaporated to get dry supernatants, then the supernatant was dissolved in hexane and cleaned up with a silica solid phase extraction column, eluted with 5 mL hexane-dichloromethane (4:1, v/v), determined by GC. The standard curve was linear in the range of 0.2-2.0 mg/L. The correlation coefficients (r) were more than 0. 999 5, the average recoveries were 79.6%-109.6% with the relative standard deviations (RSDs) of 3.60%-9.04% at the spiked levels of 0.1-0.4 mg/kg, and the detection limit of fenbutatin oxide was 0.1 mg/kg. This method is suitable for the analysis of fenbutatin oxide residue in orange products.</AbstractText>
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