In the process of production and inspection of biological products, a large amount of relevant data will be generated, but there are problems such as low digital management and inconvenient work in the data processing process. This paper constructed a trend analysis system based on the characteristics of trend analysis in the quality control of biological products. Based on the research and development of laboratory information management system (LIMS) and FineReport (FR), the system integrated the relevant technologies of instrument data acquisition and inspection data cleaning, used the shewhart control chart to complete the collection, cleaning and summary of the detection data, and provided statistics, analysis and visual monitoring, alarm and other functions to improve the quality and efficiency of the trend analysis of biological products. The stability and variability in production and testing were tracked to provide reference for the scientific management of biological products.

The permanganate index is a titration analysis based on redox reactions used to characterize the degree of organic and inorganic reducing substances in water. The explores the reaction mechanism of the acidic potassium permanganate method and elucidates the possible sources of error in the detection of permanganate index, in order to improve the accuracy of water quality testing. In summary, the accuracy of the permanganate index can be affected by various factors, including titration errors, oxidation reaction errors, and other sources of error. The effective solutions and precautions for experimental operations based on an analysis of these sources of error.

Food safety has always been one of the focus of social concern, and elemental analysis of food testing laboratory as an important means to ensure product safety, its quality control is crucial. This paper first introduces the key role of food laboratory element analysis in ensuring product safety and the main ways of food testing laboratory element analysis. Then, the paper focuses on the problems in quality control and puts forward a series of effective quality control strategies. It is hoped to provide useful guidance for the quality control of elemental analysis in food testing laboratories to ensure food safety and public health.

Objective To understand the soil status of rural soil health in Fushun City from 2017 to 2020, and to provide specific data for formulating related policies and assessing soil risks. Methods The specific data of rural soil health in Fushun city from 2017 to 2020 were monitored and analyzed. 20 monitoring sites were randomly selected for soil monitoring, and the content of parasites, heavy metals and other related indexes in soil were determined. Results Lead content reached ${645}\mathrm{{mg}}/\mathrm{{kg}}$ in Dawang village in 2020; Zhongtong village reached ${2035}\mathrm{{mg}}/\mathrm{{kg}}$, cadmium content reached ${1.22}\mathrm{{mg}}/\mathrm{{kg}}$, and other indicators were not exceeded. Conclusion The results showed that the rural soil health status of Fushun city from 2017 to 2020 was generally good, but some areas in some years also exceeded the standard, and continued to strengthen monitoring to prevent problems.

Objective To analyze the impact of microbial detection technology on food inspection results. Method 100 samples of food to be tested from a testing institution between January 2023 and December 2023 were selected as the research subjects, all of which underwent fluorescence PCR and traditional national standard methods. The microbiological testing techniques were observed and recorded in the food inspection results. Result Among the 100 food samples to be tested, 52 were fruits, 34 were vegetables, and 14 were meat. Among the 10 food samples sampled, 4 were Escherichia coli, followed by 3 Staphylococcus aureus and 2 were Salmonella. According to the traditional national standard method, 4 were Escherichia coli, and 3 were Salmonella and Staphylococcus aureus; Among the 100 food samples from 3 categories, the highest contamination rates were found in raw animal meat, raw poultry meat, and aquatic products. A total of 17 samples were contaminated, and the most pathogenic bacteria detected were Escherichia coli, Staphylococcus aureus, and Salmonella. Conclusion Microbial detection technology can detect pathogenic microorganisms in food, distinguish specific types, and has good application value.

The gas chromatograph uses gas as the mobile phase, and the sample to be measured is brought into the column by the carrier gas after gasification in the gasification chamber, and the components are separated in the column and detected by the detector. The baseline is the comprehensive performance of the performance of the gas chromatograph in operation, and the failure of each part of the instrument, the change of operating conditions and external conditions and other factors will be reflected on the baseline, so the cause and location of the fault can be judged according to the baseline.

Objective To investigate the content of pesticide residues and exogenous heavy metal pollutants in 10 commonly used Chinese crude drugs (Morindae officinalis radix; Citri grandis exocarpium; Polygoni multiflori radix; Amomi Fructus; Pogostemonis Herba; Baphicacanthis Cusiae Rhizoma et Radix; Radix Kadsurae Coccineae; Bruceae Fructus; Arecae Semen; Alpiniae Oxyphyllae Fructus) from 200 batches from different regions in Lingnan, in order to provide a basis for quality control of southern medicine. Methods The content of the exogenous pollutants such as heavy metals, harmful elements, pesticides in 10 commonly used Chinese crude drugs was measured according to Pharmacopoeia of The People's Republic of China (2020 edition)(hereinafter referred to as Chinese Pharmacopoeia), in order to determine and analyze the measurement results. Result The pesticide residues and limits of lead, arsenic, cadmium, mercury, and copper in Polygoni multiflori radix, Baphicacanthis Cusiae Rhizoma et Radix, Radix Kadsurae Coccineae, Arecae Semen and Alpiniae Oxyphyllae Fructus all meet the requirement of the Chinese Pharmacopoeia. Morindae officinalis radix, Citri grandis exocarpium, and Amomi Fructus all have heavy metal non-compliance, while Pogostemonis Herba has pesticide residue non-compliance. Conclusion For the studied varieties, pesticide residue control is good, and it is necessary to focus on monitoring lead and mercury elements.

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 Therefore, the purpose of this study is to verify and optimize the microbial contamination control strategies during the production of sterile injections to ensure product safety and improve production quality. Methods A randomized trial design was conducted between January 2022 and December 2023, a traditional control strategy between January 2022 and December 2022, and a post-optimized strategy between January 2023 and December 2023. By comparing the microbial pollution under different strategies, combining with the production environment monitoring, process process analysis and operator behavior code assessment, the effectiveness of the control strategy is comprehensively evaluated, and the strategy is optimized. Results The study found that the optimized strategy greatly reduced the risk of microbial contamination and improved production efficiency and product quality. Conclusion The validation and optimized microbial contamination control strategy has significant results in the production of sterile injection, which provides a strong guarantee to ensure the sterility and safety of the injection products. In the future, the production process will be continuously monitored, and the control strategy will be dynamically adjusted according to the actual situation to meet the changing production environment and regulatory requirements.

Objective Judging the performance stability of atomic fluorescence spectrometer in the Laboratory. Methods We performed intermediate check to atomic fluorescence spectrometer. We test the detection limits, measurement repeatability, linear error and accuracy of the instrument for arsenic reference substances. Results Verifiable indicators are in line with the standard requirements. Conclusion This method is simple and feasible, and the performance of the atomic fluorescence spectrometer in the laboratory is stable.