A simple method for the determination of organochlorine pollutants and the enantiomers in oil seeds based on matrix solid-phase dispersion.

A simple method for the determination of organochlorine pollutants and the enantiomers in oil seeds based on matrix solid-phase dispersion.

Food chemistry (2015-10-17)

Jing Zhan, Jindong Li, Donghui Liu, Chang Liu, Genggeng Yang, Zhiqiang Zhou, Peng Wang

ZUSAMMENFASSUNG

A simple, rapid and effective method was developed based on matrix solid-phase dispersion (MSPD) for the determination of organochlorine pollutants including sixteen organochlorine pesticides (OCPs) and seven polychlorinated biphenyls (PCBs) in oil seeds (peanuts and soybeans). Among the organochlorine pollutants selected, α-HCH, heptachlor, o,p'-DDT, o,p'-DDD, trans-chlordane and cis-chlordane were chiral and their enantiomers were determined by GC-ECD with a chiral column. The MSPD procedure was optimized focusing on the type and amount of dispersion sorbent, co-column sorbent and eluting solvent. Under the optimized condition, good recoveries were obtained in the range of 68.9-103.3% with relative standard deviations (RSD) values below 16.1% in all cases. LODs and LOQs were in range of 0.1-2.0ngg(-1) and 0.4-6.7ngg(-1) respectively. In summary, the method set up was qualified to be used for the determination of the pollutants and the enantiomers in oil seeds.

MATERIALIEN

Produktnummer

Marke

Produktbeschreibung

258105

Sigma-Aldrich

Schwefelsäure, ACS reagent, 95.0-98.0%

D65100

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Dichlormethan, contains 40-150 ppm amylene as stabilizer, ACS reagent, ≥99.5%

199443

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Aluminiumoxid, activated, basic, Brockmann I

139386

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Hexan, ReagentPlus^®, ≥99%

339741

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Schwefelsäure, 99.999%

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Aluminiumoxid, activated, neutral, Brockmann I

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Hexan, Laboratory Reagent, ≥95%

32293

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Hexan, puriss. p.a., ACS reagent, reag. Ph. Eur., ≥99% (GC)

32222

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Dichlormethan, puriss. p.a., ACS reagent, reag. ISO, ≥99.9% (GC)

320269

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Dichlormethan, ACS reagent, ≥99.5%, contains 40-150 ppm amylene as stabilizer

30743

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544833

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24233

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Dichlormethan, puriss., meets analytical specification of Ph. Eur., NF, ≥99% (GC)

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Aluminiumoxid, nanoparticles, <50 nm particle size (DLS), 20 wt. % in isopropanol

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Dichlormethan, ACS reagent, ≥99.5%, contains 40-150 ppm amylene as stabilizer

270997

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Dichlormethan, anhydrous, ≥99.8%, contains 40-150 ppm amylene as stabilizer

84736

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Schwefelsäure -Lösung, puriss. p.a., ≥25% (T)

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