Guoying Chen
United States Department of Agriculture
14 Papers
81 Citations
Guoying Chen is an academic researcher from United States Department of Agriculture. The author has contributed to research in topics: European union & Detection limit. The author has an hindex of 9, co-authored 14 publications. Previous affiliations of Guoying Chen include Shanghai Jiao Tong University.
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Papers
HPLC determination and MS confirmation of malachite green, gentian violet, and their leuco metabolite residues in channel catfish muscle.
Guoying Chen,Shui Miao +1 more
TL;DR: This detection scheme obviates a PbO(2) reactor that converts leuco forms to chromatic forms for absorbance detection, therefore eliminating uncertainties in oxidant depletion and data integrity and meets the sensitivity requirements set by the Food and Drug Administration and the European Union.
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SPE speciation of inorganic arsenic in rice followed by hydride-generation atomic fluorescence spectrometric quantification.
Guoying Chen,Tuanwei Chen +1 more
TL;DR: HG-AFS, at 10% budget and operation cost of a typical inductively-couple plasma mass spectrometer (ICPMS), proved highly sensitive and specific for iAs quantification.
54
Europium-sensitized luminescence determination of oxytetracycline in catfish muscle
TL;DR: An europium-sensitized time-resolved luminescence (TRL) method was developed to determine oxytetracycline (OTC) in cultivated catfish muscle andurred catfish samples were used to demonstrate the performance of the method around 100ngg(-1), the European Union maximum residue level.
31
Mercury speciation by differential photochemical vapor generation at UV-B vs. UV-C wavelength
TL;DR: In this paper, the authors proposed a sample introduction scheme for volatile mercury (Hg) using differential photochemical vapor generation under UV-B vs. UV-C wavelength and applied to fish oil supplements.
22
Determination of inorganic arsenic in algae using bromine halogenation and on-line nonpolar solid phase extraction followed by hydride generation atomic fluorescence spectrometry
Weihong Zhang,Qi Yuehan,Deyuan Qin,Jixin Liu,Mao Xuefei,Guoying Chen,Chao Wei,Qian Yongzhong +7 more
TL;DR: A novel analytical method for iAs in algae was reported, using bromine halogenation and on-line nonpolar solid phase extraction (SPE) followed by hydride generation atomic fluorescence spectrometry (HG-AFS).
15