Comprehensive chemical characterization of indoor dust by target, suspect screening and nontarget analysis using LC-HRMS and GC-HRMS

Dubocq, Florian; Kärrman, Anna; Gustavsson, Jakob; Wang, Thanh

doi:10.1016/j.envpol.2021.116701

Cited by 54 publications

(26 citation statements)

References 51 publications

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“…Satisfactory method performance characteristics in terms of recovery (90%–111%), accuracy (RSD < 13%), LODs (0.3–0.33 μg/L), and LOQs (1.0–100 μg/L) were obtained, which indicate the sensitivity and efficiency of direct UPLC-MS/MS in the PAEs determination. Perhaps MS/MS continues to be the method of choice; liquid chromatography-high resolution mass spectrometry (LC-HRMS) has been recently used for the determination of PAEs and their metabolites in seafood species [ 33 , 111 ] and to dust samples from different indoor environments [ 128 ]. HRMS coupled to LC for PAEs determination allows better selectivity and sensitivity compared to the low resolution of MS due to accurate masses.…”

Section: Analytical Approachesmentioning

confidence: 99%

Comprehensive Insight from Phthalates Occurrence: From Health Outcomes to Emerging Analytical Approaches

Luís

Algarra

Câmara

2021

Toxics

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Phthalates are a group of chemicals used in a multitude of important industrial products (e.g., medical devices, children’s toys, and food packages), mainly as plasticizers to improve mechanical properties such as flexibility, transparency, durability, and longevity of polyvinyl chloride (PVC). The wide occurrence of phthalates in many consumer products, including foods (e.g., bottled water, soft drinks, wine, milk, and meat) brings that most people are exposed to phthalates every day, which raises some concerns. Adverse health outcomes from phthalates exposure have been associated with endocrine disruption, deformities in the human reproductive system, increased risk of preterm birth, carcinogen exposure, among others. Apprehension related to the health risks and ubiquitous incidence of phthalates in foods inspires the development of reliable analytical approaches that allow their detection and quantification at trace levels. The purpose of the current review is to provide information related to the presence of phthalates in the food chain, highlighting the health risks associated with their exposure. Moreover, an overview of emerging extraction procedures and high-resolution analytical approaches for a comprehensive quantification of phthalates is presented.

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Section: Analytical Approachesmentioning

confidence: 99%

Comprehensive Insight from Phthalates Occurrence: From Health Outcomes to Emerging Analytical Approaches

Luís

Algarra

Câmara

2021

Toxics

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“…Environmental data concerning LCMs are currently scarce. Recently, researchers from China, Sweden, and Canada provided evidence of environmental occurrences of LCMs in the general household dust and/or swipe samples ,, and proved extensively used LCDs as an emission source for indoor LCMs, indicating potential human exposure to these emerging contaminants. The researchers from China further found LCMs present in sediments from three typical areas .…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Identification of Liquid Crystal Monomers—Biphenyls, Cyanobiphenyls, Fluorinated Biphenyls, and their Analogues—in Waste LCD Panels and the First Estimate of their Global Release into the Environment

Liang

Xie

Zhu

et al. 2021

Environ. Sci. Technol.

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Our previous study demonstrated massive emissions of liquid crystal monomers (LCMs) from liquid crystal display (LCD)-associated ewaste dismantling; however, the compositions, priority list, and inventory of LCMs in waste LCD panels remain unknown. Herein, we conducted the first comprehensive identification covering a broader range of LCMs, including 21 biphenyls and analogues (BAs), 28 cyanobiphenyls and analogues (CBAs), and 44 fluorinated biphenyls and analogues (FBAs), in waste television/ computer LCD panels. A total of 64 of the 93 target LCMs, including 19 BAs, 6 CBAs, and 39 FBAs, were widely detected in collected waste LCD panels. Approximately 10−18 of the 64 detectable LCMs were identified as the main compositions in various waste LCD panels, which contributed to >90% of the total LCMs. Total concentrations of FBAs in the television/computer LCD panel samples were comparable to those of BAs but much higher than those of CBAs, indicating FBAs and BAs being the commonly used LCM categories. The composition distribution of LCMs varied between television/computer LCDs and among different brands of television/computer LCDs. A preliminary estimate of the globally direct release of LCMs from waste television/computer LCD panels into various environmental compartments was about 1.07−107 kg/year, which will increase considerably in the near future.

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“…LCDs are typically designed with large colorful display screens. Recent studies found liquid crystal monomers (LCMs), a group of synthetic organic chemicals extensively used in LCD screens with potential toxic effects on humans (21), were present in indoor dust (21,22), indicating that LCMs could be released to the indoor environment during the utilization of LCDs. Given this, it is reasonable to assume that other chemicals within LCD screens may also be released to the surrounding air and become a component of indoor VOCs.…”

mentioning

confidence: 99%

Liquid crystal display screens as a source for indoor volatile organic compounds

Liu

Abbatt

2021

Proc. Natl. Acad. Sci. U.S.A.

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Liquid crystal displays (LCDs) have profoundly shaped the lifestyle of humans. However, despite extensive use, their impacts on indoor air quality are unknown. Here, we perform flow cell experiments on three different LCDs, including a new computer monitor, a used laptop, and a new television, to investigate whether their screens can emit air constituents. We found that more than 30 volatile organic compounds (VOCs) were emitted from LCD screens, with a total screen area–normalized emission rate of up to (8.25 ± 0.90) × 109 molecules ⋅ s–1 ⋅ cm–2. In addition to VOCs, 10 liquid crystal monomers (LCMs), a commercial chemical widely used in LCDs, were also observed to be released from those LCD screens. The structural identification of VOCs is based on a “building block” hypothesis (i.e., the screen-emitted VOCs originate from the “building block chemicals” used in the manufacturing of liquid crystals), which are the key components of LCD screens. The identification of LCMs is based upon the detailed information of 362 currently produced LCMs. The emission rates of VOCs and LCMs increased by up to a factor of 9, with an increase of indoor air humidity from 23 to 58% due to water–organic interactions likely facilitating the diffusion rates of organics. These findings indicate that LCD screens are a potentially important source for indoor VOCs that has not been considered previously.

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Comprehensive chemical characterization of indoor dust by target, suspect screening and nontarget analysis using LC-HRMS and GC-HRMS

Cited by 54 publications

References 51 publications

Comprehensive Insight from Phthalates Occurrence: From Health Outcomes to Emerging Analytical Approaches

Comprehensive Insight from Phthalates Occurrence: From Health Outcomes to Emerging Analytical Approaches

Comprehensive Identification of Liquid Crystal Monomers—Biphenyls, Cyanobiphenyls, Fluorinated Biphenyls, and their Analogues—in Waste LCD Panels and the First Estimate of their Global Release into the Environment

Liquid crystal display screens as a source for indoor volatile organic compounds

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