Study optimizes gas chromatographic method for detecting 22 pesticide residues in rice, enhancing food safety and regulatory compliance.

? Based on long-term investigations and practical research, 22 commonly used organophosphorus and organic nitrogen pesticides such as methamidophos and dimethoate were selected, and a high-performance gas chromatograph was used to screen and optimize a method that can simultaneously detect 22 pesticide residues in rice. Analytical detection methods. The results show that the method has high separation and wide linear range. The minimum detection amount of the method is 5.18¡Á10-12¡«8.541¡Á10-11g, the recovery rate of addition is 73.04%¡«109.16%, and the coefficient of variation is 1.16%¡«12.58%. , fully meets the technical requirements for pesticide residue detection, is a fast and feasible analytical detection method, and can be applied in actual production.

Introduction to Pesticide Residue Detection

The increasing application of organophosphorus and organic nitrogen pesticides in agricultural practices raises significant concerns regarding food safety and public health. Given the ubiquitous use of such compounds, including methamidophos, dimethoate, and others, it is imperative to establish robust analytical methodologies capable of detecting minute quantities of pesticide residues in food products. This study focuses on the optimization of a high-performance gas chromatographic technique tailored for the simultaneous detection of 22 commonly utilized pesticide residues in rice, a staple food consumed globally.

Methodology: Selecting Pesticides and Optimizing Detection

Drawing on extensive empirical research and methodological advancements, this investigation meticulously selected 22 pesticides based on their prevalence and potential impact on human health. Utilizing a state-of-the-art gas chromatograph, the research aimed to refine and validate a detection method that could efficiently and accurately quantify the presence of these pesticides in rice samples. The criteria for method optimization included parameters such as separation efficiency, sensitivity, linear range, recovery rate, and precision.

Results: Sensitivity, Recovery Rates, and Precision

The outcomes of this comprehensive study are promising, demonstrating that the optimized method exhibits exceptional separation capabilities and a broad linear range, which are critical for the accurate quantification of diverse pesticide residues. The method achieved detection limits ranging from 5.18×10^-12 to 8.541×10^-11 g, highlighting its remarkable sensitivity. Furthermore, the recovery rates spanned from 73.04% to 109.16%, indicating the method’s reliability and reproducibility across different concentration levels. The coefficient of variation, an indicator of precision, was maintained between 1.16% and 12.58%, underscoring the method’s consistency and accuracy.

Practical Application and Advantages

Notably, the optimized gas chromatographic technique fulfills and surpasses the technical specifications required for pesticide residue detection. Its superior performance characteristics make it a valuable tool for routine monitoring and quality control in the agricultural and food sectors. The method’s efficiency, coupled with its fast turnaround time, renders it not only feasible but also highly practical for implementation in actual production settings. This capability is crucial for ensuring the safety of rice, thereby protecting consumer health and facilitating compliance with international food safety standards.

Implications for Food Safety and Regulatory Standards

The implications of this study extend beyond the immediate context of rice production. By providing a robust framework for pesticide residue analysis, this research contributes significantly to the broader efforts aimed at enhancing food safety protocols and regulatory mechanisms. It underscores the importance of continuous innovation and methodological refinement in analytical chemistry, particularly in response to the evolving challenges posed by agricultural practices and food production processes.

Conclusion: Advancing Public Health Through Scientific Innovation

In conclusion, the development and validation of this high-performance gas chromatographic method represent a significant advancement in the field of food safety analysis. By offering a rapid, sensitive, and reliable approach to detecting pesticide residues in rice, this method stands as a testament to the critical role of scientific research in safeguarding public health and ensuring the integrity of our food supply.

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Original research was done by Zhao Weixing, Gong Daoxin, Yang Renbin, Guo Zhengyuan, Zou Yazhu

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