This paper aims to explore the safety management construction of engineering laboratories in higher education, focusing on two aspects: safety management in engineering laboratories and the efficiency of laboratory equipment use. Specifically, safety management construction includes equipment usage safety, safety protocols for high-altitude operations in engineering testing venues, and management of external personnel. A scientifically sound management system can effectively reduce equipment usage risks and ensure testing safety. For high-altitude operations, which are common high-risk activities, strict safety regulations and emergency plans must be established to ensure the safety of operators. Additionally, managing the access of external personnel should not be neglected; it is essential to clarify their access rights and safety responsibilities to enhance the overall safety measures of the laboratory. By strengthening these three aspects of management and improving equipment usage efficiency while reducing idle and loss rates, we can not only effectively enhance the safety of the laboratory but also promote the high-quality development of engineering education.

Objective To establish a method for the determination of total boron in soil by alkali fusion-inductively coupled plasma emission spectrometry to meet the quality control requirements of the third national soil census. Methods In this experiment, the alkali fusion method was used for sample pretreatment. By optimizing experimental conditions and screening the optimal curve preparation method, three standard substances with different contents were determined by inductively coupled plasma atomic emission spectrometry. Results The linear equation and correlation coefficient of the calibration curve prepared with experimental water are$y ={1171.470x}+ {12.981}\left({{r}^{2}= {1.000}}\right)$. The accuracy test was carried out with national standard substances, and the relative error is 13%~33%. The linear equation and correlation coefficient of the curve prepared with matrix matching solution are$y ={818.529x}+ {10.124}\left({{r}^{2}= {0.999}}\right)$. The accuracy test was carried out with national standard substances, and the relative error is${1.9}\%\sim {7.7}\%$. Conclusion This shows that preparing the calibration curve with matrix matching solution can eliminate the matrix interference caused by alkali fusion and obtain satisfactory results.

Due to the strong randomness of fault distribution and low reliability of detection results in zinc oxide lightning arresters, a fault detection method for zinc oxide lightning arresters based on infrared thermal imaging technology is proposed. The FLIR T600 infrared thermal imager with a resolution of${640}\times {480}$pixels is used to capture thermal sensing images of lightning arresters. The fault area is identified through temperature characteristics of the fault location and binary image processing, and the detection output of temperature abnormal areas is obtained. The test results show that the detection results of different areas of the zinc oxide lightning arrester device are completely consistent with the manual detection results, and there are no missed or false detections.

Objective In order to ensure the quality control of enterprise production products and improve detection efficiency, a high-performance liquid chromatography method for Benzyl Propionate Oxadiazon Granules is established. Methods The HPLC method was used to separate and determine the contents of Benzyl Propionate Oxadiazon Granules which contained the active ingredients mentioned above. In the method, the column ZORBAX Eclipse Plus${\mathrm{C}}_{18}$(${4.6}\mathrm{\;{mm}}\times {50}\mathrm{\;{mm}},{1.8}\mathrm{\;{\mu m}},{600}\mathrm{\;{Bar}}$) was used and the mixture of acetonitrile, isopropanol and 0.05% phosphoric acid solution was used as the mobile phase, and${245}\mathrm{\;{nm}}$was the selected wavelength in the determination. Results It has been found that bensulfuron methyl, pretilachlor, and oxadiazon not only have high chromatographic peak purity under this analytical method, but also have a good linear relationship. The peak purity of bensulfuron methyl in this product is 992, with a recovery rate of 98.82%. The peak purity of pretilachlor is 993.3, with a recovery rate of 99.88%. The peak purity of oxadiazon is 999.3, and the recovery rate is 99.22%. Conclusion This chromatographic method is stable and suitable for quality control analysis of this product.

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.

Against the backdrop of rapid global urbanization and booming construction industry, the demand for various materials in construction projects is showing explosive growth. Whether it is the concrete used to build sturdy foundations, the steel bars that bear the structural strength, or the sand, gravel, and cement used to construct foundations, their roles in the construction blueprint are crucial. They must meet the strictest quality specifications and performance indicators to ensure the stability and durability of the project. However, the fierce competition in the market, the complexity of the supply chain, and the lack of regulatory oversight have made the quality of the building materials market quite delicate. This may not only breed engineering defects and bury safety hazards, but also cause unnecessary loss of valuable resources. This article first analyzes the important role of building material testing in construction engineering, discusses the content of building material testing and the hazards caused by inadequate testing work, and focuses on exploring optimization strategies for building material testing in construction engineering for reference.

ABSTRACT: With the wide application of electronic products in life, its radiation safety has gradually become the focus of public attention. In order to ensure personal health, equipment safety and electromagnetic environment, as well as to protect the interests of users and consumers, it is necessary to rectify the products with unqualified radiation emission. Through the analysis of the reasons for the excessive radiation emission of electronic products, it can be concluded that the excessive radiation emission of products is usually caused by three factors, interference source, interference coupling path and sensitive equipment. According to relevant national radiation safety standards, this paper used advanced electromagnetic compatibility principles and shielding effect theory to locate the radiation source of electronic equipment, analyzed its radiation characteristics, and took corresponding measures to reduce the radiation emission value of the tested product to within the specified limit, put forward the three major directions for radiation emission rectification at present were shielding, filtering, and isolation, which providing further reference for related research.

Against the backdrop of continuous socio-economic progress in China, the public has set higher standards and requirements for the quality and safety of food. In view of this, food safety issues have gradually become a focus of social attention. Given the diversity and vast quantity of food in the market, consumers often find it difficult to accurately assess its safety when selecting food. Therefore, inspection agencies must increase investment in food safety inspections and use advanced testing techniques to ensure the effective protection of China's food safety level. In this regard, this article first outlines rapid detection technology, analyzes the application significance of food safety rapid detection technology, explores the key points of rapid detection technology in food safety testing, and proposes measures to promote the application of food safety rapid detection technology for reference.

In this paper, the application and recent progress of mass spectrometry in pesticide residue detection were systematically reviewed. Firstly, the basic principle, instrument composition, advantages and limitations of mass spectrometry technology are introduced, and its remarkable characteristics of high sensitivity and high resolution are emphasized. Then, the application of conventional detection methods such as GC-MS and LC-MS, as well as new mass spectrometry technologies such as HRMS and LC-MS/MS in pesticide residue detection was discussed in detail, especially the ability of these technologies to detect trace pesticide residues in complex substrates. Next, sample preparation and processing methods, such as QuEChERS, as well as key steps for data analysis and results processing. Finally, the reliability and repeatability of test results were ensured through methodological validation and optimization strategies. The research in this paper not only provides comprehensive technical support for pesticide residue detection, but also lays a foundation for further development in the field of food safety and environmental monitoring. The innovation is the integration of a variety of new mass spectrometry technology application cases, demonstrating its powerful capabilities in multi-component simultaneous analysis and trace detection.

Objective To investigate the interference effect of lipid turbidity on the detection of prealbumin by Immunotransparency turbidimetry. Methods 40 non-lipid turbidity serum samples from patients with cholesterosis cutis were selected from February 2021 to January 2024 in Shanghai Fengxian District Dermatology Prevention and Control Institute, an additional 40 samples of turbid serum from patients with xanthelasma were selected. Immunotransmission turbidimetry was used to measure prealbumin levels in 80 serum samples, and then the method repeatability of 40 serum samples without lipid turbidity was analyzed, and the lipid turbidity interference effect of 40 lipid turbidity serum samples was analyzed. Results The intra-batch precision of prealbumin was less than 1/4TEa (CLIA’88), and the total precision was less than 1/3TEa (CLIA’88). There was no significant difference in prealbumin in 40 fat-free turbid serum samples after low-speed centrifugation and high-speed centrifugation followed by immunotransmission nephelometry, respectively$\left({P >{0.05}}\right)$. Lipid turbidity did not interfere with the accuracy of prealbumin detection in blood samples treated by high-speed centrifugation. For blood samples treated by low-speed centrifugation, when the lipid turbidity index was$<{43}\mathrm{{mg}}/\mathrm{{dL}}$, it did not interfere with the effect of prealbumin examination, and when the lipid turbidity index was$\geq {43}\mathrm{{mg}}/\mathrm{{dL}}$, it interfered with the effect of prealbumin examination. The detection result of prealbumin in blood samples treated by high-speed centrifugation was higher than that of low-speed centrifugation samples$\left({P <{0.05}}\right)$. Conclusion Lipid turbidity interferes with the accuracy of albumin level before immunotransmission turbidimetry, but the interference effect of mild lipid turbidity is not significant. When the lipid turbidity index is$\geq {43}\mathrm{{mg}}/\mathrm{{dL}}$, the interference effect on prealbumin is obvious.