Publications by authors named "Cui-Xia Yuan"
Objective: To investigate the pollution of organophosphate esters(OPEs) and their metabolites in drinking water in Dongcheng District of Beijing, and to assess the exposure risk of adults in drinking water.
Methods: The contents of 14 OPEs and 7 metabolites in drinking water were determined by automatic solid phase extraction, isotope dilution and liquid chromatography tandem mass spectrometry. The average daily potential dose(ADD) were calculated based on the recommended intake of drinking water.
Article Synopsis
- The study aimed to develop an efficient method for detecting 21 organophosphate esters and their metabolites in drinking water using automatic solid phase extraction followed by liquid chromatography-tandem mass spectrometry.
- The method exhibited high sensitivity with detection limits between 0.01-0.24 ng/L and good recovery rates of 57.6%-121.2%, demonstrating its effectiveness when applied to various water samples, including tap and packaged water.
- Overall, the approach is characterized as simple and suitable for high-throughput analysis, highlighting potential risks associated with organophosphate exposure in drinking water.
Fruit size and shape are controlled by genes expressed during the early developmental stages of fruit. Although the function of ASYMMETRIC LEAVES 2 (AS2) in promoting leaf adaxial cell fates has been well characterized in Arabidopsis thaliana, the molecular mechanisms conferring freshy fruit development as a spatial-temporal expression gene in tomato pericarp remain unclear. In the present study, we verified the transcription of SlAS2 and SlAS2L, two homologs of AS2, in the pericarp during early fruit development.
View Article and Find Full Text PDFObjective: To explore the contamination characteristics of chloropropanol esters and glycidyl esters in infant formulas sold in Beijing in 2021, and to evaluate the exposure risk of chloropropanol esters and glycidyl esters for infants and toldders aged 0-36 months old.
Methods: The contents of chloropropanol esters and glycidyl esters in infant formula samples were determined using gas chromatography-mass spectrometry with deuterated internal standards. Combined with the recommended consumption of infant formulas, the exposure level of chloropropanol esters and glycidyl esters in infants and toddlers aged 0-36 months was calculated.