High Hydroquinone Emissions from Burning Manzanita
High Hydroquinone Emissions from Burning Manzanita
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DOI：
10.1021/acs.estlett.8b00222
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发表时间：
2018-05
影响因子：
10.9
通讯作者：
C. Jen;Yutong Liang;L. Hatch;N. Kreisberg;C. Stamatis;K. Kristensen;J. Battles;S. Stephens;R. York;K. Barsanti;A. Goldstein
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文献类型：
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作者：
C. Jen;Yutong Liang;L. Hatch;N. Kreisberg;C. Stamatis;K. Kristensen;J. Battles;S. Stephens;R. York;K. Barsanti;A. Goldstein
由于气候变化和历史上的灭火，加州的野火正变得更大、更频繁。2017年的火灾季节在金钱损失、烧毁面积和人员伤亡方面都是创纪录的。此外，约有2000万人连续数天暴露在浓密的野火烟雾中。要了解野火烟雾对健康的影响，需要对不同燃料产生的烟雾进行详细的化学分类。这项研究展示了在燃烧曼扎尼塔产生的烟雾中观察到的独特化学指纹，曼扎尼塔是一种常见的茶树和森林下层灌木，在加利福尼亚州的几个生态系统中发现。在FIREX火灾实验室的实验中，燃烧manzanita会排放对苯二酚(1，4-二苯二酚，排放系数为0.4 g/kg)和两种甾醇/三萜类示踪化合物，其水平比加利福尼亚州其他常见的野生燃料，如松树、其他灌木、草和木屑高出100倍。此外，在加州伯克利也检测到了这些化合物。
California wildfires are becoming larger and more frequent because of climate change and historical fire suppression. The 2017 fire season was record-breaking in terms of monetary damage, area burned, and human casualties. In addition, roughly 20 million people were exposed to dense wildfire smoke for days. Understanding the health impacts of wildfire smoke requires detailed chemical speciation of smoke produced from different fuels. This study demonstrates the unique chemical fingerprint observed in smoke from burning manzanita, a common chaparral and forest understory shrub found in several ecosystems of California. Burning manzanita during the FIREX Fire Laboratory experiments emitted hydroquinone (1,4-dihydroxybenzene with an emission factor of 0.4 g/kg) and two sterol/triterpenoid tracer compounds at levels up to 100 times higher than those of the other common wildland fuels in California such as pine trees, other shrubs, grasses, and duff. Additionally, these compounds were detected in Berkeley, CA,...