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Study Unveils Alarming Levels of Microplastics in Birds’ Lungs

Recent research conducted by the University of Texas at Arlington has revealed that airborne microscopic plastic pollutants are infiltrating the lungs of various bird species. The growing concern surrounding these pollutants underscores their widespread presence in the air we breathe and the food we consume.

Shane DuBay, an assistant professor of biology at UTA and a co-author of the research published in the Journal of Hazardous Materials, highlighted the rationale behind selecting birds for the study. Their global distribution and proximity to human habitats make them ideal subjects for understanding environmental health.

“Birds act as vital indicators of ecological conditions,” DuBay remarked, collaborating with experts from Sichuan University and Chengdu Tianfu International Airport in China. “They provide insight into environmental status, aiding in informed conservation efforts and pollution management.”

The research team examined 56 wild birds across 51 different species, all sourced from Chengdu’s Tianfu airport. They performed rigorous analyses of lung samples extracted from each bird.

Utilizing advanced laser direct infrared technology, the researchers detected and counted microplastics in the lungs, while pyrolysis gas chromatography-mass-spectrometry allowed for the identification of even smaller nanoplastics that can enter the bloodstream through the lungs. This comprehensive approach enabled the scientists to quantify the presence of plastic and classify the various types found.

The findings revealed alarmingly high concentrations of microplastics in the birds, averaging 221 particles per species and a staggering 416 particles per gram of lung tissue. The predominant types identified included chlorinated polyethylene, commonly used for insulation in pipes and wires, and butadiene rubber, often found in tires.

Despite the absence of a defined “safe” level for plastic particles in lung tissue, research indicates that elevated microplastic levels are associated with serious health complications such as cardiovascular disease, cancer, respiratory issues, and reproductive disorders.

“This study underscores the urgent necessity to confront plastic pollution in our ecosystems, as these pollutants pose significant threats to both environmental and human health,” DuBay emphasized. “Our findings advocate for additional research, increased funding, and proactive measures to reduce the dire consequences of plastic pollution, aiming for a healthier environment for all living beings.”

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