journal of hazardous materials
Study on the uptake enrichment and risk assessment of fruit trees with whole (poly)fluorinated compounds
I. Introduction. Total (poly)fluorinated compounds (PFCs) are a widely used class of chemical substances that are widely used in industry and daily life due to their excellent chemical stability and anti-corrosion properties. However, the environmental pollution problem of PFCs has gradually become prominent, especially in the absorption and enrichment of fruit trees. Therefore, it is of great significance to evaluate the absorption, enrichment and risk of PFCs in fruit trees for environmental protection and food safety.
2. Research Methodology.
In this study, apple orchards and pear orchards in a certain region of China were selected as research objects, and fruit tree samples at different growth stages were collected. By measuring the content of PFCs in the samples, combined with the growth environment of fruit trees and the emission data of PFCs, the absorption and enrichment of PFCs in fruit trees were analyzed. At the same time, the risk assessment model was used to evaluate the residual risk of PFCs in fruits.
III. Results and Discussion.
Absorption and enrichment of PFCs in fruit trees.
The results showed that the absorption and enrichment of PFCs in fruit trees were mainly affected by environmental factors and PFCs emissions. Within a certain range, the greater the emission of PFCs, the greater the amount of PFCs absorbed and enriched by fruit trees. In addition, the growth stage and species of fruit trees also affect the uptake and enrichment of PFCs. For example, fruit trees at the young fruiting stage are more sensitive to the uptake of PFCs.
Residual risk of PFCs in fruits.
The risk assessment results showed that the residues of PFCs in some fruits exceeded international standards and food safety standards. Long-term consumption of these fruits may pose potential threats to human health, such as affecting the immune system and nervous system. In addition, sensitive groups such as children and pregnant women are at higher risk.
IV. Conclusions. This study showed that the uptake and enrichment of PFCs in fruit trees could not be ignored. In order to reduce the risk of PFCs contamination to the environment and food, effective measures should be taken to control the discharge of PFCs and remediate the contaminated soil and water sources. In addition, it is important to strengthen the monitoring and supervision of PFCs residues in fruits and raise public awareness of the dangers of PFCs.
5. Suggestions and prospects.
In view of the above problems, the following suggestions are put forward: first, strengthen the supervision of PFCs emissions and restrict their use in industry and daily life;The second is to promote environmental protection technology and cleaner production to reduce PFCs emissions;The third is to carry out soil and water remediation work to reduce the PFCS content in polluted areas;The fourth is to establish a sound fruit quality and safety inspection system to ensure that fruits are safe and pollution-free.
Future research directions include: first, in-depth study of the migration and transformation of PFCs in soil-water-biological systems;The second is to carry out multi-media, multi-species and multi-scale comprehensive research to comprehensively assess the environmental risks of PFCs;The third is to explore cost-effective PFCS pollution control technologies. Through these studies, it is hoped to provide more powerful scientific basis and technical support for environmental protection and food safety.
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