An overview of the development of vertical sampling technologies for ambient volatile organic compounds (VOCs)

Hien, Vo Thi Dieu; Lin, Chitsan; Thanh, Vu Chi; Oanh, Nguyen Thi Kim; Bui, Xuan‐Thanh; Weng, Chien-Erh; Yuan, Chung-Shin; Rene, Eldon R.

doi:10.1016/j.jenvman.2019.06.090

Cited by 39 publications

(20 citation statements)

References 121 publications

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“…Another critical component, VOCs, are organic substances that can easily evaporate under ambient air conditions, and most of them are toxic. The VOCs can cause skin irritation, cancer, respiratory diseases, chronic obstructive pulmonary disease, bronchial asthma, and systolic plus diastolic hypertension [ 194 , 195 , 196 ]. The increased concentration of VOCs will lead to decreased respiratory and lung function in children and cardiopulmonary dysfunction in susceptible populations [ 197 ].…”

Section: Health Effects Of Indoor Pmmentioning

confidence: 99%

Indoor Particulate Matter in Urban Households: Sources, Pathways, Characteristics, Health Effects, and Exposure Mitigation

Zhang

Magana-Arachchi

et al. 2021

IJERPH

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Particulate matter (PM) is a complex mixture of solid particles and liquid droplets suspended in the air with varying size, shape, and chemical composition which intensifies significant concern due to severe health effects. Based on the well-established human health effects of outdoor PM, health-based standards for outdoor air have been promoted (e.g., the National Ambient Air Quality Standards formulated by the U.S.). Due to the exchange of indoor and outdoor air, the chemical composition of indoor particulate matter is related to the sources and components of outdoor PM. However, PM in the indoor environment has the potential to exceed outdoor PM levels. Indoor PM includes particles of outdoor origin that drift indoors and particles that originate from indoor activities, which include cooking, fireplaces, smoking, fuel combustion for heating, human activities, and burning incense. Indoor PM can be enriched with inorganic and organic contaminants, including toxic heavy metals and carcinogenic volatile organic compounds. As a potential health hazard, indoor exposure to PM has received increased attention in recent years because people spend most of their time indoors. In addition, as the quantity, quality, and scope of the research have expanded, it is necessary to conduct a systematic review of indoor PM. This review discusses the sources, pathways, characteristics, health effects, and exposure mitigation of indoor PM. Practical solutions and steps to reduce exposure to indoor PM are also discussed.

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Section: Health Effects Of Indoor Pmmentioning

confidence: 99%

Indoor Particulate Matter in Urban Households: Sources, Pathways, Characteristics, Health Effects, and Exposure Mitigation

Zhang

Magana-Arachchi

et al. 2021

IJERPH

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“…Another alternative is the stainless steel canister (SS canister). The sample is introduced under pressure into a canister coated with inert inner-wall material, allowing sample storage for weeks [84]. In addition, cuvettes manufactured in glass are suitable devices for enclosure without sorption due to its chemical inertness, but configurations including sorbent materials are more frequent.…”

Section: Tools For Sampling Semiochemicals To Study Insect Interacmentioning

confidence: 99%

Tools in the Investigation of Volatile Semiochemicals on Insects: From Sampling to Statistical Analysis

Barbosa-Cornelio

Cantor

Coy-Barrera

et al. 2019

Insects

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The recognition of volatile organic compounds (VOCs) involved in insect interactions with plants or other organisms is essential for constructing a holistic comprehension of their role in ecology, from which the implementation of new strategies for pest and disease vector control as well as the systematic exploitation of pollinators and natural enemies can be developed. In the present paper, some of the general methods employed in this field are examined, focusing on their available technologies. An important part of the investigations conducted in this context begin with VOC collection directly from host organisms, using classical extraction methods, by the employment of adsorption materials used in solid-phase micro extraction (SPME) and direct-contact sorptive extraction (DCSE) and, subsequently, analysis through instrumental analysis techniques such as gas chromatography (GC), nuclear magnetic resonance (NMR) and mass spectrometry (MS), which provide crucial information for determining the chemical identity of volatile metabolites. Behavioral experiments, electroantennography (EAG), and biosensors are then carried out to define the semiochemicals with the best potential for performing relevant functions in ecological relationships. Chemical synthesis of biologically-active VOCs is alternatively performed to scale up the amount to be used in different purposes such as laboratory or field evaluations. Finally, the application of statistical analysis provides tools for drawing conclusions about the type of correlations existing between the diverse experimental variables and data matrices, thus generating models that simplify the interpretation of the biological roles of VOCs.

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“…For instance, the combined utilization of aircraft and online spectrometer (such as PTR-MS) has been widely used in North America to measure VOCs concentrations in the lower troposphere (Hornbrook et al, 2011;Müller et al, 2016;Yuan et al, 2016;Koss et al, 2017;Fry et al, 2018;Chen et al, 2019), while it is quite difficult in China due to the lack of professional research aircraft and the strict control of airspace. Tethered balloons and UAVs are generally not suitable for online VOCs measurements due to their limited payloads (Dieu Hien et al, 2019)…”

Section: Introductionmentioning

confidence: 99%

Variations and sources of volatile organic compounds (VOCs) in urban region: insights from measurements on a tall tower

Yuan

Wang

et al. 2022

Preprint

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Abstract. Volatile organic compounds (VOCs) are key precursors of ozone and particulate matter that are the two dominant air pollutants in urban environments. However, compositions and sources of VOCs in urban air aloft were rarely reported by far. To address this matter, highly time-resolved measurements of VOCs were made by proton-transfer-reaction time-of-flight mass spectrometer (PTR-ToF-MS) at a 450-m platform on the Canton Tower in Guangzhou, China. A combination of in-situ measurements and modeling techniques was used to characterize variations and sources of VOCs. Five sources were identified from positive matrix factorization (PMF) analysis, namely daytime-mixed (e.g., biogenic emissions and secondary formation), visitor-related (e.g., human breath and volatilization of ethanol-containing products), vehicular+industrial, regional transport, and volatile chemical product (VCP)-dominated (i.e., volatilization of personal care products), contributing on average to 22 %, 30 %, 28 %, 10 %, and 11 % of total VOC (TVOC) mixing ratios, respectively. We observe that contributions of the visitor-related source, mainly composed of ethanol, followed well with the variation patterns of visitor number on the tower. The VCP-dominated source only had an average contribution of ~5.7 ppb during the campaign, accounting for a small fraction (11 %) of TVOC mixing ratios. However, large fractions of some VOC species, e.g., monoterpenes (49 %), were attributed to the VCP-dominated source, indicating significant contributions of VCPs to ambient concentrations of these species in urban environments. Vertical profiles of air pollutants (including NOx, ozone, Ox, and PM2.5), measured at 5 m, 118 m, 168 m, and 488 m, exhibited more evident gradients at night than in the daytime owing to stronger stability of the nocturnal boundary layer. Mixing ratios of VOC species during the nighttime generally decreased with time when the 450-m platform was located in the nocturnal residual layer and significantly increased when impacted by emissions at ground. The results in this study demonstrated composition characteristics and sources of VOCs in urban air aloft, which could provide valuable implications in making control strategies of VOCs and secondary air pollutants.

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An overview of the development of vertical sampling technologies for ambient volatile organic compounds (VOCs)

Cited by 39 publications

References 121 publications

Indoor Particulate Matter in Urban Households: Sources, Pathways, Characteristics, Health Effects, and Exposure Mitigation

Indoor Particulate Matter in Urban Households: Sources, Pathways, Characteristics, Health Effects, and Exposure Mitigation

Tools in the Investigation of Volatile Semiochemicals on Insects: From Sampling to Statistical Analysis

Variations and sources of volatile organic compounds (VOCs) in urban region: insights from measurements on a tall tower

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