Understanding the importance of atmospheric transformation in assessing the hazards of liquid crystal monomers

Wang, Jinlong; Wang, Shenghong; Zhang, Zhizhen; Wang, Xinkai; Xia, Kaihui; Li, Li; Liu, Qifan

doi:10.1039/d3em00424d

Cited by 1 publication

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References 47 publications

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“…LCMs have been hypothesized as a new class of persistent organic pollutants (POPs) given that their diphenyl backbones are structurally similar to known POPs such as polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs). ,,,, It is crucial to assess the environmental persistence of LCMs, i.e., the level of their resistance to chemical and biological transformation. Several methods have been developed to quantify the environmental persistence of chemicals.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Environmental Persistence of Liquid Crystal Monomers Indoors and Outdoors

Miramontes Gonzalez,

2023

Environ. Sci. Technol. Lett.

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Liquid crystal monomers (LCMs) exemplify a group of chemicals prevalent in indoor environments. However, current frameworks for assessing the environmental persistence of chemicals predominantly focus on outdoor environments, often overlooking indoor environments. Here, we model and compare the persistence of LCMs across indoor and outdoor multimedia environments. Our findings reveal that, when assessed in an outdoor context, <10% of the investigated LCMs exhibit overall persistence comparable to those of persistent organic pollutants regulated by the Stockholm Convention, and one-third to two-thirds of the investigated LCMs meet the Stockholm Convention's medium-specific half-life thresholds for persistence. However, we found a notable disparity between indoor and outdoor persistence: Approximately 90% of the investigated LCMs demonstrate substantially prolonged persistence indoors, 10 times longer on average, and up to ∼150 times longer in some cases, compared to outdoors. This long indoor persistence is mainly attributed to the low volatility of LCMs and their high affinity for indoor surface compartments. Our work highlights the indoor environment's role as both a continuous source of human exposure to LCMs and a potential reservoir for long-term regional contamination. Therefore, a tailored, fit-for-purpose assessment of "indoor persistence", focusing on chemicals predominantly found in indoor environments, carries profound implications for both human and ecological health.

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Section: Introductionmentioning

confidence: 99%

Evaluating the Environmental Persistence of Liquid Crystal Monomers Indoors and Outdoors

Miramontes Gonzalez,

2023

Environ. Sci. Technol. Lett.

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Understanding the importance of atmospheric transformation in assessing the hazards of liquid crystal monomers

Abstract: The results suggest that atmospheric transformation can significantly change the hazard properties of LCMs, emphasizing the importance of atmospheric transformation when evaluating the hazards of LCMs.

Cited by 1 publication

References 47 publications

Evaluating the Environmental Persistence of Liquid Crystal Monomers Indoors and Outdoors

Evaluating the Environmental Persistence of Liquid Crystal Monomers Indoors and Outdoors

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