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Spider Webs as Passive Monitors of Microplastic and Its Copollutants in Indoor Environments
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Researchers tested indoor spider webs as passive monitors for microplastic contamination and found significantly higher microplastic concentrations in webs (up to 33,570 particles per gram) compared to household dust. A strong correlation between microplastic levels in webs and dust suggests spider webs are effective bioindicators of indoor plastic pollution. The study also detected chemical co-pollutants like bisphenol A and phthalates in both webs and dust, highlighting the complex mixture of contaminants in indoor environments.
Indoor environments are particularly vulnerable to microplastics (MPs) and associated copollutants due to limited air circulation and particulate matter accumulation. Continuous monitoring is essential to evaluate exposure levels and health risks. We propose using indoor spider webs as passive monitors for MPs and their copollutants. MPs were found in both web and dust samples with nonuniform distribution (p < 0.05), indicating contamination hotspots. Web samples had significantly higher MP levels (138-33,570 MPs/g) compared to dust samples (59-9324 MPs/g). A strong positive correlation (r = 0.93, p < 0.05) between MPs in dust and webs suggests that spider webs are effective bioindicators of indoor MP contamination. The study also revealed the presence of Bisphenol A and various phthalic acid esters (PAEs). Co-pollutant concentrations ranged from 52.02-1971.78 μg/kg in webs and 43.18-518.42 μg/kg in dust. Diethyl phthalate (DEP) was more common in webs, while Dibutyl phthalate (DBP) predominated in dust. These findings highlight spider webs' potential as both effective biomonitoring tools and significant sinks for MPs and their cocontaminants in indoor environments.
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An integrative analysis of microplastics in spider webs and road dust in an urban environment–webbed routes and asphalt Trails
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Researchers analyzed microplastics in spider webs and road dust collected from urban environments, finding that spider webs are an effective and low-cost way to monitor airborne microplastic pollution, with indoor parking lots showing microplastic counts 31 times higher than outdoor lots. The study demonstrates that spider webs can serve as natural passive samplers to track plastic particle pollution in city air.
Plastic in the air?! - Spider webs as spatial and temporal mirror for microplastics including tire wear particles in urban air
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Spider webs collected from urban environments were analyzed as passive biomonitors for airborne microplastics including tire wear particles, with results showing that webs captured diverse plastic types reflecting local traffic and industrial sources. The study proposes spider webs as a low-cost tool for spatial and temporal mapping of atmospheric plastic pollution.
Microplastic atmospheric pollution in an urban Southern Brazil region: What can spider webs tell us?
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Researchers used spider webs as a passive sampling tool to monitor airborne microplastic pollution across urban areas in southern Brazil. They found microplastics in webs from all sampling locations, with fibers being the most common type, reflecting contributions from synthetic textiles. The study demonstrates that spider webs can serve as a simple and effective method for tracking atmospheric microplastic contamination in cities.
Plastic in the Air?! – Spider webs as spatial mirrors for microplastics and tire wear in urban air
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Spider webs collected from urban areas were used as passive samplers for airborne microplastics and tire wear particles, with the sticky silk capturing particles from the surrounding air over time. Analysis found microplastics and tire-derived particles in all webs tested, with concentrations reflecting traffic intensity in the surrounding area. The study presents spider webs as a novel, inexpensive, and spatially flexible tool for monitoring atmospheric microplastic pollution.
Integrated GC–MS and ATR–FTIR analysis of airborne microplastics captured by spider webs
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Scientists used spider webs like tiny air filters to check for microplastic pollution in a Polish city, and found tire particles, rubber, and various plastic materials (like nylon and polypropylene) in every single web they tested — whether downtown or in the suburbs. This matters because it shows these tiny plastic bits are floating in the air all around us pretty evenly, which means we're likely breathing them in no matter where we live in a city, and cheap, everyday spider webs could become an easy tool for tracking this invisible pollution.
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