Paraquat was born to help farmers get rid of weeds in the fields and make crops grow better. As a herbicide, its weeding effect is definitely one of the best, and it will wither quickly as long as it is sprayed with a little weed, which shows how powerful its toxicity is. But magically, it will only poison weeds and will not affect the land.
It is a quick-acting bipyridine herbicide. Effective components are extremely destructive to chloroplast membrane, which quickly stops photosynthesis and chlorophyll synthesis. 2-3 hours after application, the leaves began to change color. Paraquat has a strong destructive effect on the green tissues of monocotyledonous and dicotyledonous plants, and has a certain conductive effect on the destruction of green plant tissues, but it can not penetrate the thick bark and is easy to passivate after contacting with soil.
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Harm of paraquat to human body;
After paraquat enters the human body, it will combine with human tissues and cells, resulting in strong oxidation and lipid peroxidation. In this process, patients produce a lot of oxygen free radicals, which damage tissues and cells, leading to cell apoptosis and necrosis. Among them, paraquat is the most harmful to the lung, which can cause pulmonary congestion, bleeding, edema, fibrosis, and finally suffocate. What's more, there is no effective medical rescue method.
The lethal dose of paraquat to adults at 20% concentration is 5 to 15 ml. After taking it by mistake, it can be absorbed into the blood through the digestive tract, which will damage many organs of the whole body and often lead to multiple organ failure. The lung is the most seriously damaged organ, and fibrosis of alveoli and interstitial lung can occur gradually, leading to "paraquat lung" and severe dyspnea.
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