Comparison between GC-MS-SIM and GC-ECD for the Determination of Residues of Organochlorine and Organophosphorus Pesticides in Brazilian Citrus Essential Oils

被引：19

作者：

Alves, Andrea A. R. ^{[1
]}

Rezende, Michelle J. C. ^{[1
]}

Hovell, Ana M. C. ^{[1
]}

Bizzo, Humberto R. ^{[2
]}

Oliveira, Ana Carolina L. ^{[3
]}

Rodrigues, Silvana V. ^{[3
]}

Rezende, Claudia M. ^{[1
]}

机构：

[1] Univ Fed Rio de Janeiro, Inst Quim, CT, BR-21941909 Rio De Janeiro, RJ, Brazil

[2] Embrapa Agroind Alimentos, BR-23020470 Rio De Janeiro, RJ, Brazil

[3] Univ Fed Fluminense, Inst Quim, BR-24220900 Niteroi, RJ, Brazil

来源：

JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY | 2012年 / 23卷 / 02期

关键词：

citrus essential oils; organophosphorus pesticides; organochlorine pesticides; GC-ECD; GC-MS-SIM; GAS-CHROMATOGRAPHY; MULTIRESIDUE ANALYSIS; PLASTICIZER RESIDUES; MASS-SPECTROMETRY; MEDICINAL-PLANTS; ELECTRON-CAPTURE; OLIVE OIL; CONTAMINATION; EXTRACTION;

D O I：

10.1590/S0103-50532012000200017

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Brazilian citrus essential oils (mandarin, orange, lemon, bergamot and tangerine) were analyzed for the determination of pesticides residues of organochlorine (aldrin, chlordane, dieldrin and dicofol) and organophosphorus (methyl chlorpyrifos, dimethoate, methidathion and methyl parathion). A comparative study between gas chromatography-mass spectrometry in selective ion monitoring mode (GC-MS-SIM) and gas chromatography-electron capture detector (GC-ECD) was performed using solid phase extraction (SPE) with Florisil (R) cartridge for the pre-concentration of pesticides. The average recovery of pesticides was from 71 to 83% as determined by GC-MS-SIM analysis and 99 to 104% by GC-ECD. The limit of quantification was from 0.93 to 3.93 mg L-1 in GC-MS-SIM and 0.09 to 0.12 mg L-1 in GC-ECD. Fifteen samples of commercial Brazilian citrus essential oils were analyzed and six samples showed contamination with values above the maximum residue limit (MRL) allowed by the Codex Alimentarius.

引用

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页码：306 / 314

页数：9

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