Ventilation Time of Rice Triazophos Exceeding Standard: Effective Duration and Precautions for Natural Residue Reduction

Rice is one of the main food crops in our country, and its quality and safety are directly related to the stability of the food supply chain. Triazophos is an organophosphorus insecticide widely used in rice cultivation. Although it can effectively control diseases and pests, excessive use or irregular application may lead to excessive residues in rice and affect consumer health. When the detection of triazophos residues in rice exceeds the standard, it is crucial to take scientific measures to reduce residues in time. As a low-cost and easy-to-operate treatment method, natural ventilation is widely used in agricultural production.

Effective duration of ventilation to reduce residues

The effect of natural ventilation to reduce residues is closely related to environmental conditions, and the specific duration needs to be judged according to the actual situation. In conventional storage or drying environments, air circulation can accelerate degradation by reducing the concentration of pesticide residues. According to relevant agricultural residue studies, under the conditions of suitable temperature (20-30 ° C), relative humidity 40% -60%, and daily ventilation time of not less than 6 hours, triazophos residues in rice usually show a decreasing trend over time. Generally speaking, after 7-15 days of continuous ventilation treatment, the triazophos residues in most samples can be reduced to below the safety standard (specifically, GB 2763-2022 "National Food Safety Standard, Maximum Residue Limits of Pesticides in Food" shall prevail). However, it should be noted that if the initial residue of rice is too high (if it exceeds the standard value by more than 2 times), or the ambient humidity is high and the ventilation is poor, it may need to be extended to more than 20 days.

Precautions in the process of reducing residues

During the period of natural ventilation and reducing residues, the following details need to be paid attention to to to ensure the effect and safety: First, strictly control the ambient temperature and humidity to avoid high temperature and high humidity causing rice mildew or residues to slow down degradation due to increased humidity; second, regularly monitor the residual amount, you can use the food safety rapid detection reagent developed by Wuhan Yupinyan Bio, through colloidal gold immunochromatography or enzyme inhibition method and other technologies, quickly determine whether the triazophos residue meets the standard within 30 minutes, and avoid blindly prolonging the ventilation time; third, distinguish the difference between rice varieties, different varieties of rice have different adsorption and degradation characteristics of pesticide residues, and need to adjust the ventilation strategy; fourth, avoid mixed storage with other pollutants to prevent cross-contamination from causing secondary exceeding the standard ...

The importance of scientific treatment and testing

It is worth emphasizing that natural ventilation is only suitable for rice with mild or moderate pollution of triazophos. For severely exceeded samples, comprehensive treatment should be combined with washing, sun exposure, etc., and the final residue should be confirmed through professional testing. As an enterprise focusing on rapid detection technology for food safety, Wuhan Yupinyan Bio has developed detection reagents that can be widely used in source screening of agricultural products to help farmers and testing institutions quickly locate risk points and provide accurate basis for subsequent residue reduction treatment. In agricultural production, timely detection and scientific treatment are the key links to ensure food security, and the combination of natural ventilation and professional testing is an effective way to achieve controllable quality of agricultural products.