College electrical and electronic laboratories play a crucial role in conducting fundamental and advanced education and teaching activities. In order to improve the overall safety of electrical and electronic laboratories in colleges and universities, eliminate safety hazards and prevent safety accidents. This paper analyzes and summarizes the common unsafe factors in electrical and electronic laboratories in colleges and universities. These unsafe factors include physical unsafe factors and human unsafe factors. Physical related unsafe factors involve experimental equipment and experimental environment, while human related unsafe factors involve laboratory managers, experimental instructors and students. Based on an analysis of these unsafe factors, this paper puts forward specific measures for electrical and electronic laboratory safety management, including strengthening the safety management of experimental equipment and experimental environment, improving the safety management level of laboratory staff, enhancing the awareness of safety responsibility of experimental instructors, and eliminating unsafe behavior of students. These measures provide a certain security guarantee for the construction and development of electrical and electronic laboratories.

College pharmacy teaching laboratory is an important place to train pharmaceutical technology practical talents, involving many disciplines, equipment and chemicals, which will bring a large number of unsafe factors, and a little carelessness will cause personal, property and environmental safety accidents. Therefore, safety management should be strengthened. Based on the practice of laboratory safety management, this paper analyzes the current situation and problems of safety management, and believes that it can be improved from the aspects of safety system, safety education, hardware construction and targeted management of each laboratory, so as to effectively improve the safe operation of the laboratory.

Traditional textile testing methods have problems of subjectivity and inefficiency, and the testing method based on artificial intelligence technology provides a new way to solve these problems. This paper first summarizes the traditional textile inspection methods, including visual inspection, manual inspection and traditional machine vision inspection technology. Then, the textile testing and analysis methods based on artificial intelligence technology are introduced, including data acquisition and preprocessing, feature extraction and selection, testing model design and training, and testing result analysis and evaluation. Through the application of artificial intelligence technology, the automation, efficiency and accuracy of the textile testing process can be achieved, which brings new possibilities for the quality control and production optimization of the textile industry. Experimental results show that the detection accuracy of the proposed method is improved by 23.5% compared with the traditional method. Therefore, the textile testing method based on artificial intelligence technology can be widely promoted and applied in practice.

With the rapid development of digital technology, digital in the field of education online learning platform, manufacturing factory automation, financial industry mobile payment and other industries widely and far-reaching application. The digital transformation and upgrading of university laboratory asset management can realize real-time tracking and monitoring of assets, automated management processes, data analysis and optimization of decision-making, improve security and accuracy, and provide convenient query and traceability functions, improve management efficiency, reduce costs, and promote the compliance and efficient circulation and use of data assets. This paper analyzes the current situation of laboratory assets management in universities, discusses the significance and challenges of the digital transformation of laboratory assets management in the new era, and puts forward specific countermeasures for the digital transformation of laboratory assets management in universities.

With the increasingly serious environmental pollution, food may be affected by various new pollutants, such as microplastics and heavy metals. Therefore, it is necessary to continuously study the detection methods of new pollutants to ensure the overall safety of food. This article makes a deep thinking and innovative discussion on food testing work under the background of food safety.

Objective To establish a high performance liquid chromatography (HPLC) method for the determination of paeoniflorin in a natural Chinese herbal medicine. Methods The chromatographic column was${\mathrm{C}}_{18}$column (${250}\mathrm{\;{mm}}\times$ ${4.6}\mathrm{\;{mm}},{5\mu }\mathrm{m}$), the mobile phase was acetonitrile -0.05% phosphoric acid aqueous solution $\left({{20}: {80}, V/V}\right)$, the flow rate was ${0.8}\mathrm{\;{mL}}/\mathrm{{min}}$, the column temperature was ${30}^{\circ }\mathrm{C}$, the detection wavelength is ${237}\mathrm{\;{nm}}$, and the injection volume was${10\mu }\mathrm{L}$. Results The linear range of paeoniflorin was ${24.68}\sim {246.8\mu }\mathrm{g}/\mathrm{{mL}}$, the linearity of paeoniflorin was good $\left({{r}^{2}= {0.9999}}\right.$, $n = 5$), the results of precision, stability and repeatability experiment were good, and the RSD values were less than $2\%$, the average recovery was ${102.0}\%$, RSD was ${1.49}\%\left({n = 9}\right)$. Conclusion The method is simple, convenient, easy to operate, and with strong specific, good separationand, good repeatability. It is suitable for the determination of paeoniflorin in natural Chinese herbal medicine, and provides a reference for the determination of paeoniflorin in compound preparations with Radix Paeoniae rubra as raw material.

Objective This study aims to explore the application of gel permeation chromatography in determining the content of xylene-soluble substances in polypropylene. Methods The study employed gel chromatography to accurately measure the content of xylene-soluble substances in polypropylene and conducted a comparative analysis with the volumetric method to verify the accuracy and reliability of gel chromatography. Results The experimental results indicated that the absolute difference between the measurement results obtained by gel chromatography and the volumetric method did not exceed 0.07%, meeting the accuracy requirements. Furthermore, gel chromatography significantly shortened the analysis time from approximately 8 hours with the volumetric method to 3 hours, and the operation was more straightforward. The amount of xylene used during sample processing was greatly reduced, demonstrating its efficiency and environmental friendliness. Conclusion This study successfully validated the feasibility and superiority of gel chromatography in determining the content of xylene-soluble substances in polypropylene. This method is not only simple to operate and fast in analysis but also highly environmentally friendly, with minimal impact on the environment and operators. It provides strong support for the rapid detection and control of polypropylene product quality and holds broad industrial application prospects.

Objective To establish a gas-mass spectrometry method for determination of epichlorohydrin in Metoprolol succinate tablets. Methods The chromatographic column is HP-1MS. Injection temperature is${220}^{\circ }\mathrm{C}$; The injection method is split injection, and the split ratio is${10}: 1$. The heating procedure is to keep the initial temperature at${50}^{\circ }\mathrm{C}$for$3\mathrm{\;{min}}$, then raise the temperature to${80}^{\circ }\mathrm{C}$at a rate of${20}^{\circ }\mathrm{C}/\mathrm{{min}}$for$5\mathrm{\;{min}}$, and to${280}^{\circ }\mathrm{C}$at a rate of${40}^{\circ }\mathrm{C}/\mathrm{{min}}$for$8\mathrm{\;{min}}$. The sample intake capacity is${1\mu }\mathrm{L}$. The ion source is electron bombardment source (EI), ion source temperature is${230}^{\circ }\mathrm{C}$. Mass spectrometry interface temperature is${260}^{\circ }\mathrm{C}$; the monitoring mode of mass spectrometry is SIM. The mass to charge ratios (m/z) are 49, 57 and 62. Results The linear range of epichlorohydrin concentration is${30}\sim {120}\mathrm{{ng}}/\mathrm{{mL}}\left({r >{0.99}}\right)$. The detection limit is${32.37}\mathrm{{ng}}/\mathrm{{mL}}$. The limit of quantitation is${107.89}\mathrm{{ng}}/\mathrm{{mL}}$. RSD of precision is${1.8}\%\left({n = 6}\right)$. The average recovery is${103.8}\%$with RSD of${2.5}\%\left({n = 6}\right)$. Epichlorohydrin was not detected in 3 batches of Metoprolol succinate tablets. Conclusion The established gas-mass coupling method is simple, practical, accurate and reliable, and can be used for the determination of epichlorohydrin in Metoprolol succinate tablets.

Objective To explore the simultaneous determination of the contents of nine components in Xintong Oral Liquid using high-performance liquid chromatography-tandem mass spectrometry. Methods A Phenomenex Luna-C18 column (${250}\mathrm{\;{mm}}\times {4.6}\mathrm{\;{mm}},{5\mu }\mathrm{m}$) was used with acetonitrile-methanol-${0.02}\mathrm{{mol}}/\mathrm{L}$ammonium acetate as the mobile phase for gradient elution at a flow rate of${0.9}\mathrm{\;{mL}}/\mathrm{{min}}$. Mass spectrometry conditions: ESI source, MRM mode, quantification was performed using the peak area of the quantitative ion pairs. Results The linear ranges of the nine components, including ferulic acid, diphenylethylene glycoside, puerarin, etc., were from 15.22 to 15220 ng/mL to 25.36 to${25360}\mathrm{\;{ng}}/\mathrm{{mL}}$. The recovery rates were from 98.15% to 101.84%, with RSDs ranging from 0.67% to 1.64%. In nine batches of samples, the mass concentration ranges of the nine index components were from 0.180 to 4.699 mg/mL. Conclusion This study innovatively applies the HPLC-MS/MS technique to efficiently and accurately determine the nine core components in Xintong Oral Liquid, simplifying the process, accelerating quality control, and aiding in standardized production.