Comprehensive Characterization of Organic Light-Emitting Materials in Breast Milk by Target and Suspect Screening DOI
Shuping Zheng, Jingsheng Wang, Kai Luo

et al.

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(11), P. 5103 - 5116

Published: March 6, 2024

Organic light-emitting materials (OLEMs) are emerging contaminants in the environment and have been detected various samples. However, limited information is available regarding their contamination within human body. Here, we developed a novel QuEChERS (quick, easy, cheap, effective, rugged, safe) method coupled with triple quadrupole/high-resolution mass spectrometry to determine OLEMs breast milk samples, employing both target suspect screening strategies. Our analysis uncovered presence of seven out 39 targeted comprising five liquid crystal monomers two commonly used organic diode displays. The cumulative concentrations each sample ranged from ND 1.67 × 103 ng/g lipid weight, mean median concentration 78.76 0.71 respectively, which were higher compared that typical pollutants such as polychlorinated biphenyls polybrominated diphenyl ethers. We calculated estimated daily intake (EDI) rates for infants aged 0–12 months, EDI during lactation range 30.37 54.89 ng/kg bw/day. Employing approach, additionally identified 66 potential OLEMs, them, cholesteryl hydrogen phthalate benzoate, further confirmed using pure reference standards. These substances belong cholesteric raise concerns about endocrine-disrupting effects, indicated by silico predictive models. Overall, our present study established robust identification shedding light on findings indicate exposure should be investigated, including health risks.

Language: Английский

Fluorinated liquid-crystal monomers in paired breast milk and indoor dust: A pilot prospective study DOI Creative Commons

Runhui Yang,

Xinyi Wang, Yumin Niu

et al.

Environment International, Journal Year: 2023, Volume and Issue: 176, P. 107993 - 107993

Published: May 26, 2023

Fluorinated liquid-crystal monomers (FLCMs), one class of emerging persistent, bioaccumulative and toxic (PBT) compounds, are widely used in displays (LCDs). As a result, they have been found the environment serum from occupational workers. However, little is known about their occurrence non-occupational exposing populations. Herein, we provided an evaluation health risks FLCMs for infants based on breastfeeding exposure dust ingestion. The detection frequencies (DF) indoor breast milk was 100 %, with median concentrations 12.00 ng/g dry weight (dw) 133.40 lipid (lw), respectively. 1-butoxy-2,3-difluoro-4-(trans-4-propylcyclohexyl)benzene (BDPrB) predominant pollutant human milk. Significant positive correlations were observed between seven including BDPrB, (r = 0.275–0.660, P < 0.05). Further, associations also some demographic behavioral factors (P highest EDI ∑FLCMs who 1 month age, intake 700.35 ng/kg bw/day, which 1-ethoxy-2,3-difluoro-4-(trans-4-propylcyclohexyl)benzene (EDPrB), 4′-[(trans, trans)-4′-butyl[1,1′-bicyclohexyl]-4-yl]-3,4-difluoro-1,1′-biphenyl (BBDB) collectively contributed 94.4 % total EDIs. Notably, lactational higher than that environmental pollutants (EPs). Overall, our results suggest route daily infants.

Language: Английский

Citations

32
A review of liquid crystal monomers: Environmental occurrence, degradation, toxicity, and human exposure of an emerging class of E-waste pollutants DOI

Jiali Ge,

Bibai Du,

Mingjie Shen

et al.

Environmental Pollution, Journal Year: 2023, Volume and Issue: 335, P. 122267 - 122267

Published: July 25, 2023

Language: Английский

Citations

24
Occurrence, behavior and fate of liquid crystal monomers in municipal wastewater DOI
Yuting Zhan, Qianqian Jin, Huiju Lin

et al.

Water Research, Journal Year: 2023, Volume and Issue: 247, P. 120784 - 120784

Published: Oct. 26, 2023

Language: Английский

Citations

21
Aquatic photolysis of high-risk fluorinated liquid crystal monomers: Kinetics, toxicity evaluation, and mechanisms DOI
Jingyi Wu,

Weibiao Ye,

Yiping Feng

et al.

Water Research, Journal Year: 2024, Volume and Issue: 255, P. 121510 - 121510

Published: March 23, 2024

Language: Английский

Citations

7
A method for the determination of 60 liquid crystal monomers in biotic and abiotic samples DOI Creative Commons
Yuan Liu, Wenlong Li, Zhongmin Li

et al.

Environmental Chemistry and Ecotoxicology, Journal Year: 2024, Volume and Issue: 6, P. 51 - 64

Published: Jan. 1, 2024

Liquid crystal monomers (LCMs) are synthetic organic chemicals widely used in the manufacture of liquid displays (LCDs) digital electronic devices. As human interactions with electronics like computers and cell phones intensify, exposure to LCMs is concern. Nevertheless, there limited research on occurrence biological non-biological matrices. We developed a method determine 60 electronic-waste panels, indoor dust, feces, urine using gas chromatography–mass spectrometry (GC–MS). Solid matrices (i.e., dust feces) were extracted solid-liquid extraction (SLE) whereas urine) solid phase (SPE). Indoor feces extracts purified by passage through silica gel packed gravity columns. The instrument limits detection (LODs) quantification (LOQs) ranges 0.05–13.0 0.18–39.1 ng/mL, respectively. Recoveries all target analytes fortified at concentrations 10 100 ng/mL LCD range 71.1–130%, standard deviations 0.01–33%. Repeated analyses similarly samples yielded intra-day inter-day variations (CV) 0.32–12.6% 0.76–14.3%, Matrix effects, calculated from matrices, ranged −28.5% 28.5%. was applied analysis dog urine, which found contain 22, 42, 46, 18 targeted LCMs, panels (∑LCM = 1780 ± 165 ng/cm2 for desktop computer monitors; 166,900 80,100 smartphone screens), 2030 1260 ng/g), 1990 2000 ng/g dw), 24.0 14.6 ng/mL). can be wide environmental samples.

Language: Английский

Citations

6
A ratiometric fluorescent probe with 1,2,4-triazole recognition unit for fluoride ion detection based on synchronous fluorescence spectroscopy DOI
Na Jiang, Xiao Zhang, Yi Qu

et al.

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1308, P. 138108 - 138108

Published: March 20, 2024

Language: Английский

Citations

6
Informal E-waste dismantling activities accelerated the releasing of liquid crystal monomers (LCMs) in Pakistan: Occurrence, distribution, and exposure assessment DOI
Yanhui Ge,

Jingren Cui,

Lianying Zhang

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 932, P. 172987 - 172987

Published: May 10, 2024

Language: Английский

Citations

6
Aquatic toxicity, ecological effects, human exposure pathways and health risk assessment of liquid crystal monomers DOI
Wei He,

Yuhan Cui,

Hao Yang

et al.

Journal of Hazardous Materials, Journal Year: 2023, Volume and Issue: 461, P. 132681 - 132681

Published: Sept. 30, 2023

Language: Английский

Citations

14
Accumulation characteristics of liquid crystal monomers in plants: A multidimensional analysis DOI
Wei He,

Yuhan Cui,

Yunxiang Li

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 468, P. 133848 - 133848

Published: Feb. 22, 2024

Language: Английский

Citations

5
A new class of contaminants of concern? A comprehensive review of liquid crystal monomers DOI Creative Commons

Bianca Stadelmann,

P.E.G. Leonards, S. Brandsma

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 947, P. 174443 - 174443

Published: July 2, 2024

Liquid crystal monomers (LCMs) are a class of emerging contaminants concern predicted to be persistent, bioaccumulative and toxic (PBT). Being one the key components in liquid displays (LCDs), disposal LCD containing devices is closely related emission LCMs into environment. have been detected wide range environmental matrices including dust, sediment, soil, sewage leachate, air, with concentration ranges between 17 2121 ng/g found indoor residential dust. Furthermore, they on human skin at concentrations up 2,071,000 ng/m

Language: Английский

Citations

5