PMID- 25255566 OWN - NLM STAT- MEDLINE DCOM- 20150901 LR - 20190923 IS - 1000-8713 (Print) IS - 1000-8713 (Linking) VI - 32 IP - 7 DP - 2014 Jul TI - [Determination of six phthalate acid esters in camellia oil by gas chromatography-mass spectrometry coupled with solid-phase extraction using single-walled carbon nanotubes as adsorbent]. PG - 735-40 AB - An analytical method based on solid-phase extraction with single-walled carbon nanotubes (SWCNTs) as adsorbent was developed for the simultaneous determination of six phthalate acid esters (PAEs) in camellia oil by gas chromatography-mass spectrometry (GC-MS). The samples were diluted by hexane and then cleaned up with a glass SWCNTs solid phase extraction (SPE) column. The PAEs were measured by GC-MS in selected ion monitoring (SIM) mode, using external standard method for quantitative analysis. The important factors affecting extraction efficiency, such as the dilution volume of hexane, the type of adsorbent material, the dosage of SWCNTs, the volume of wash solution, the type and volume of elution solution were optimized. The optimal conditions were as follows: the dilution volume of hexane was 5 mL, the dosage of SWCNTs was 0.6 g, the wash solution was 20 mL hexane, and the elution solution was 5 mL toluene. The six PAEs had a good linear range from 0.05 mg/L to 1.0 mg/L, with the correlation coefficients (r) all above 0.999 9. The average recoveries of the six targets in spiked camellia oil (from 0.05 mg/kg to 1.0 mg/kg) ranged from 86.4% to 111.7% with the relative standard deviations (RSDs) from 4.2% to 10.4%. The developed method is accurate, quick and suitable for the determination of the six PAEs in camellia oil. FAU - Zhang, Fan AU - Zhang F FAU - Li, Zhonghai AU - Li Z FAU - Zhang, Ying AU - Zhang Y FAU - Huang, Zhiqiang AU - Huang Z FAU - Wang, Xiaosong AU - Wang X LA - chi PT - Journal Article PL - China TA - Se Pu JT - Se pu = Chinese journal of chromatography JID - 9424804 RN - 0 (Esters) RN - 0 (Nanotubes, Carbon) RN - 0 (Phthalic Acids) RN - 0 (Plant Oils) RN - 6O7F7IX66E (phthalic acid) SB - IM MH - *Camellia MH - Esters/*analysis MH - Gas Chromatography-Mass Spectrometry MH - Nanotubes, Carbon MH - Phthalic Acids/*analysis MH - Plant Oils/*chemistry MH - Solid Phase Extraction EDAT- 2014/09/27 06:00 MHDA- 2015/09/02 06:00 CRDT- 2014/09/27 06:00 PHST- 2014/09/27 06:00 [entrez] PHST- 2014/09/27 06:00 [pubmed] PHST- 2015/09/02 06:00 [medline] AID - 10.3724/sp.j.1123.2014.04036 [doi] PST - ppublish SO - Se Pu. 2014 Jul;32(7):735-40. doi: 10.3724/sp.j.1123.2014.04036.