叶子表面尘埃中的可呼吸矿物纤维:微型表征和地质起源的证据
Wenxia Wendy Fan1, Kim N Dirks2, Alessandro F Gualtieri3
1The University of Auckland School of Environment, Auckland, New Zealand.
Chemosphere
|December 4, 2025
概括
空气中的矿物纤维,包括致癌性埃里奥尼特,从公路附近的火山岩中释放出来. 大多数纤维是可呼吸的,构成环境健康风险,需要进一步评估.
科学领域:
- 环境科学 环境科学
- 地质地质地质地质地质地
- 公共卫生 公共卫生
背景情况:
- 自然存在的纤维矿物质,如埃里奥尼特和两石,是第一组致癌物.
- 在火山级地区的道路砍伐可以暴露含纤维的岩石,通过气候和人类活动释放空气中的纤维.
研究的目的:
- 调查新西兰火山级环境中的路边环境中空气中矿物纤维的释放和特性.
- 为了确定岩石来源与表面尘埃中的空气纤维之间的联系.
主要方法:
- 从路边环境收集了表面尘埃和岩石样本.
- 分析的纤维丰度,特征 (大小,尺寸比) 和化学/晶体构成.
- 尘埃中的纤维丰度与岩石样本的矿物质相关.
主要成果:
- 在所有11个地点的路边灰尘中检测到纤维颗粒,含量很高.
- 93%的纤维是可呼吸的,15%符合世卫组织对危险纤维的标准.
- 摩登石是占主导地位的纤维类型,与其在岩石样本中的度相关.
结论:
- 火山喷发的路边暴露是可呼吸矿物纤维的未被认可的途径.
- 在自然存在纤维矿物质的火山地区,需要进一步的监测和健康风险评估.
更多相关视频
09:29An Air-liquid Interface Bronchial Epithelial Model for Realistic, Repeated Inhalation Exposure to Airborne Particles for Toxicity Testing
Published on: May 13, 2020
12.4K
05:18Measuring Carbon Content in Airway Macrophages Exposed to Carbon-Containing Particulate Matters
Published on: July 12, 2024
677
相关概念视频
02:21Globular and Fibrous Proteins
Many proteins can be classified into two distinct subtypes - globular or fibrous. These two types differ in their shapes and solubilities.
Globular proteins are also known as spheroproteins and typically are approximately round in shape. They contain a mix of amino acid types and contain differing sequences in their primary structures. Globular proteins have many different functions, such as enzymes, cellular messengers, and molecular transporters. These roles often require the proteins to be...
Globular proteins are also known as spheroproteins and typically are approximately round in shape. They contain a mix of amino acid types and contain differing sequences in their primary structures. Globular proteins have many different functions, such as enzymes, cellular messengers, and molecular transporters. These roles often require the proteins to be...
01:26Alveoli and Alveolar Ducts
The respiratory zone of the human body, which stands in contrast to the conducting zone, comprises the structures that actively participate in the exchange of gases. The initiation of this zone is marked by the terminal bronchioles converging into respiratory bronchioles, the tiniest bronchiole classification. The respiratory bronchioles give way to the alveolar ducts that opens into a congregation of alveoli. Actively involved in gas exchange, alveoli resemble tiny sacs similar to clusters of...