Exposure
Due to their use as plasticizers, diethyl phthalates are ubiquitous in the environment, especially near places of production and use. Biodegradation through microbially-mediated processes can result in products that can potentially harm microorganisms. There is also general evidence of widespread human exposure. Non-occupational exposure results from the diet, for example phthalate-coated medicines and nutritional supplements, and through consumer products. High occupational exposure was observed in workers directly manufacturing plasticizers. Studies suggest a high correlation between air and urine sample concentrations of short side-chain phthalates such as DEP, making inhalation an important route of exposure.
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