Publications by authors named "Minheng He"

A novel analytical method for the simultaneous determination of seven naphthalenediols (2,6-naphthalenediol, 1,5-naphthalenediol, 1,6-naphthalenediol, 2,7-naphthalenediol, 1,7-naphthalenediol, 1,3-naphthalenediol and 2,3-naphthalenediol) in cosmetics by reversed-phase high performance liquid chromatography (RP-HPLC) with a diode array detector was established. The moisturizer, cream, emulsion and water-like cosmetic samples were extracted with 95% ethanol (v/v), and the powder-like cosmetic samples were extracted with 95% ethanol-0.1% acetic acid (3: 2, v/v), then the extracts were centrifuged, filtrated, and analyzed by RP-HPLC using a C18 column, employing methanol-0.

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A method based on solid-phase microextraction (SPME) and gas chromatography with mass spectrometry (GC/MS) for the determination of 18 organophosphorus pesticides (OPPs) in textiles is described. Commercially available SPME fibers, 100 microm PDMS and 85 microm PA, were compared and 85 microm PA exhibited better performance to the OPPs. Various parameters affecting SPME, including extraction and desorption time, extraction temperature, salinity and pH, were studied.

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