A method for the determination of seven bisphenol compounds in disposable tableware was established based on solid-phase extraction-supercritical fluid chromatography. The effects of extraction conditions and purification conditions on the extraction efficiency of bisphenol from disposable tableware were investigated. Disposable tableware samples were extracted by ultrasonic with acetone as a solvent, purified by HLB solid-phase extraction column, analyzed by supercritical fluid chromatography, and quantified by external standard method. The actual samples of disposable tableware of different materials were analyzed, and it was found that there were residues of BPA, BPF, and BADGE with a content of 0.45-4.10 mg/kg. The method was green and efficient, which was suitable for the determination of bisphenol compounds in disposable tableware.
Objective:To investigate the oropharyngeal function recovery of oropharyngeal squamous cell carcinoma repaired by anterolateral thigh flap and forearm flap. Methods:Retrospective study between September 2016 and September 2020 complete line 37 cases of oropharyngeal cancer postoperative soft tissue defect of femoral anterolateral flap or forearm flap to repair the patient data, in which 22 cases, using the forearm skin flap to repair 15 cases with femoral anterolateral flap, flap survival rate of preparation, compare the two groups, the incidence of vascular crisis, The functions of swallowing, speech, and velopharyngeal closure were evaluated. Results:21 cases of forearm flaps survived, and 1 case had vascular crisis. After surgical exploration, the contralateral forearm flaps survived transplantation. Fourteen anterolateral femoral flaps survived, 2 flaps had vascular crisis, and 1 flap survived after thrombus removal. The other one was repaired with pectoralis major myocutaneous flap for necrosis. Swallowing, speech, palatopharyngeal closure and other functions of the patients after the two kinds of flap repair had higher satisfaction. Conclusion:Forearm flap and anterolateral thigh flap are good choices for soft tissue defect after oropharyngeal cancer, Must act according to the special details choice appropriate therapeutic schedule.目的：探讨股前外侧皮瓣与前臂皮瓣修复口咽鳞状细胞癌术后缺损的口咽功能恢复情况。 方法：回顾性研究2016年9月—2020年9月在山西医科大学第一医院口腔科完成的37例口咽癌术后软组织缺损行股前外侧皮瓣或前臂皮瓣修复的患者资料，其中22例采用前臂皮瓣修复，15例采用股前外侧皮瓣修复，比较2组皮瓣制备成活率、血管危象发生率，并评估患者术后的吞咽、言语、腭咽闭合等功能。 结果：21例前臂皮瓣成活，1例出现血管危象，手术探查后未能成活，取对侧前臂皮瓣移植后成活。14例股前外侧皮瓣成活，2例皮瓣出现血管危象，其中1例手术探查去除血栓后皮瓣成活，另1例皮瓣坏死，改为胸大肌皮瓣修复。2种皮瓣修复术后患者的吞咽、言语、腭咽闭合等功能均有较高的满意度。 结论：对于口咽癌术后的软组织缺损，前臂皮瓣或股前外侧皮瓣可达到良好的功能修复，需根据具体情况选择。.
A method for the determination of four acrylate monomers in food packaging paper was established based on high performance liquid chromatography (HPLC) method. The effects of extraction solvent, ultrasonic time, ultrasonic temperature and other pre-treatment conditions on the extraction efficiency of acrylate monomers were investigated. Under the optimal conditions, the samples of food packaging paper were extracted by ultrasonic treatment, analyzed by HPLC, and quantified by external standard method. The results suggested that the four acrylate monomers showed good linearity in the range of 0.1-50.0 mg/L (R2 ≥ 0.999), and the detection limits (LODs) were 0.03-0.08 mg/L. The blank samples were used as the matrix for standard addition experiment, and the recoveries were 89.2%-108.1% with relative standard deviations of 1.3%-4.8%. The method was simple, accurate and reliable, which can provide technical support for daily detection of acrylic monomers in food packaging paper.
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