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Rapid determination of estrogens in milk samples based on magnetite nanoparticles/polypyrrole magnetic solid-phase extraction coupled with liquid chromatography-tandem mass spectrometry.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Gao, Qiang Chen, Zongwei Feng, Yu-Qi |
| Copyright Year | 2011 |
| Abstract | In this study, a nanocomposite of polypyrrole-coated magnetite nanoparticles (denoted as MNPs/PPy) was prepared and employed as magnetic solid-phase extraction (MSPE) sorbent for extraction of estrogens from milk samples. Because the polypyrrole coating possessed a highly π-conjugated structure and hydrophobicity, MNPs/PPy showed excellent performance for the estrogen extraction. Estrogens could be captured directly by MNPs/PPy from milk samples without protein precipitation. Moreover, the extraction could be carried out within 3 min. Thus, a rapid, simple, and effective method for the analysis of estrogens in milk samples was established by coupling MNPs/PPy-based MSPE with liquid chromatography-tandem mass spectrometry (LC-MS/MS). The limits of detections for estrogens investigated were in the range of 5.1-66.7 ng/L. The recoveries of estrogens (concentration range of 0.5-20 ng/mL) from milk samples were in the range of 83.4-108.5%, with relative standard deviations ranging between 4.2 and 15.4%. |
| File Format | PDF HTM / HTML |
| DOI | 10.1021/jf201372r |
| Alternate Webpage(s) | http://lib3.dss.go.th/fulltext/E_content/0021-8561/2011v59n16.pdf |
| PubMed reference number | 21749040 |
| Alternate Webpage(s) | https://doi.org/10.1021/jf201372r |
| Journal | Medline |
| Volume Number | 59 |
| Issue Number | 16 |
| Journal | Journal of agricultural and food chemistry |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
