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Principal Sources, Fate, and Mechanism of Chemical Mixtures in the Environment
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This review investigates the sources, formation pathways, and environmental fate of chemical mixtures, including how different pollutants interact when they coexist in natural settings. The study highlights that the combined effects of chemical mixtures on ecosystems and human health have been largely overlooked, even though real-world environmental contamination almost always involves multiple pollutants at once.
Chemicals have undoubtedly improved our quality of life, but the resulting environmental pollution poses potential risks to both our environment and our health. In natural environments, it is common for different types of pollutants with distinct properties to coexist, leading to the contamination of the environment by chemical mixtures. Surprisingly, the origin, formation mechanism, impact on environmental quality, and ecosystem health of chemical mixtures have been largely overlooked in previous studies. Therefore, this chapter aims to comprehensively investigate the sources, pathways, and mechanisms involved in the formation of chemical mixtures containing heavy metals (HMs) and pesticides in soil environments, as well as those comprising HMs, microplastics (MPs), and nanoparticles in various environmental media. Thus, it can provide clues for studying the toxicity of chemical mixtures and predicting their joint toxicity.
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