Progress in the Study of Distribution,Sources and Environmental Risks of Aspartame in the Environment
Aspartame(ASP),a widely used artificial sweetener,is of increasing concern as an emerging contaminant due to its fre-quent detection in the environment and potential adverse effects on human health and aquatic ecosystems.ASP has been listed as a pos-sible carcinogen by the International Agency for Research on Cancer,emphasizing the importance of studying its pollution levels,sources,and health risks in the natural environment.This article systematically reviews the current research status on the distribution,sources,and environmental risks of ASP in both domestic and international studies.The results indicate that:1)ASP is widely distrib-uted in various environmental media worldwide,with concentrations at ng/L or ng/g levels,categorizing it as a trace organic pollutant;2)ASP tends to distribute in solid organic matrices in water systems,such as suspended particulate matter,river sediments,and sludge.Changes in environmental conditions can lead to the re-release of adsorbed ASP into the water,resulting in higher concentra-tions of ASP in the ambient water than those in wastewater treatment plant effluents;3)Risk assessments show that ASP in the envi-ronment is currently at low or no risk levels;iv)Solid-phase extraction coupled with liquid chromatography-tandem mass spectrometry(SPE-LC-MS/MS)is an effective analytical method for accurate quantification of ASP in environmental samples.Based on the existing literatures,future research should focus on the biogeochemical behavior,toxic effects,and human health risks associated with ASP.
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