Abstract
The photo-induced toxicity of pesticide has drawn increasing attention as the development of environmental risk research. Some pesticides were designed to utilize the property of photo-response, which made the light radiation acting as a switch to control the toxic activity. However, photo-induced toxicity is unwanted for a part of pesticides due to the generation of more toxic photo products under sunlight radiation (wavelength >290 nm), which were 2.5–1265.4 times toxic than corresponding parent compounds in present studies. Here, a comprehensive review was presented for photo-induced toxicity of pesticides. Based on present studies, the photo-induced toxicity modes and the influence factors were summarized and analyzed. In addition, a possible theoretical developing conception for avoiding photo-induced toxicity of pesticide was proposed based on the mechanism analysis. In the next step, the studies on photo-induced toxicity of pesticides need more samples which facilitates the modeling and projection of the photo-induced toxicity and development of novel environmentally friendly pesticides. Besides, the influence of complexation and joint photo-induced toxicity will be a further research direction because the pesticides usually co-exist with other solutes in surface runoff. The research will be of great significance to promote the environmental security and the sustainable development of agriculture.
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