- Book学术

发布求助

文献互助智能选刊最新文献

IF 7.6 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Building and Environment Pub Date : 2025-09-23 DOI:10.1016/j.buildenv.2025.113766

Zongyan Li , Yumiao Li , Yitong Luo , Ke Zhang , Chuan Xiong , Tao Yu , Rongjiang Ma , Yuhao Yi , Mengsi Deng

{"title":"Fugitive emissions of fine particulate matter from yak dung stove in the Qinghai-Tibet Plateau Region: Dynamic characteristics and chemical composition","authors":"Zongyan Li , Yumiao Li , Yitong Luo , Ke Zhang , Chuan Xiong , Tao Yu , Rongjiang Ma , Yuhao Yi , Mengsi Deng","doi":"10.1016/j.buildenv.2025.113766","DOIUrl":null,"url":null,"abstract":"<div><div>Most rural residents in the Qinghai Tibet Plateau region use yak dung stoves for cooking and heating, which release a large amount of PM2.5, and part of them can escape into the room through the gaps in the stove body, leading to severe household air pollution. The PM2.5 fugitive emission characteristics of yak dung stoves are important for further human exposure evaluation and indoor air quality improvement, but have been rarely addressed. Therefore, we tested a typical yak dung stove in a local household, used the mass balance method to calculate the dynamic PM2.5 fugitive emission rate, and analyzed its chemical composition. The results indicated that the average effective PM2.5 fugitive emission rate was 6.42±4.36 mg/min, and the average fraction of effective PM2.5 fugitive emission to total PM2.5 emission was 12.4%±6.59%. During a whole combustion activity, the effective PM2.5 fugitive emission rate rose rapidly in the early phase, reaching one or more peaks, and then declined to the low level. Frequent ignition and loading events led to higher PM2.5 fugitive emission rates. The stove switched between an indoor PM2.5 emission source and a sink during the whole combustion event under the chimney exhaust effect and stove operation. Organic carbon (OC) and water-soluble ions were the main components of net PM2.5 fugitive emissions, contributing to 20.43%±8.11% and 20.09%±15.40%, respectively. This study can provide basic information for further evaluating the household PM2.5 pollution attributed to yak dung stoves in the Qinghai-Tibet Plateau region and optimizing stove structures to reduce PM2.5 fugitive emissions.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"287 ","pages":"Article 113766"},"PeriodicalIF":7.6000,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Building and Environment","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0360132325012363","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}

引用次数: 0

摘要

5、其中一部分可通过炉身缝隙逸入室内，导致室内空气污染严重。牛粪炉PM2.5逸散性排放特征对进一步评价人体暴露和改善室内空气质量具有重要意义，但研究较少。因此，我们对当地某户典型牦牛粪炉进行了测试，采用质量平衡法计算了PM2.5的动态逸散排放率，并对其化学成分进行了分析。结果表明，北京市PM2.5平均有效逸散排放率为6.42±4.36 mg/min, PM2.5有效逸散排放占PM2.5总排放的平均比例为12.4%±6.59%。在整个燃烧活动中，PM2.5有效逸散排放率在早期快速上升，达到一个或多个峰值，然后下降到较低水平。频繁的点火和加载事件导致PM2.5逸散性排放率升高。在整个燃烧过程中，炉子在烟囱排气效应和炉子运行的作用下，在室内PM2.5排放源和汇之间切换。有机碳（OC）和水溶性离子是PM2.5净无组织排放的主要成分，分别占20.43%±8.11%和20.09%±15.40%。本研究可为进一步评价居民PM2.5逸散性排放提供基础信息。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Fugitive emissions of fine particulate matter from yak dung stove in the Qinghai-Tibet Plateau Region: Dynamic characteristics and chemical composition

Most rural residents in the Qinghai Tibet Plateau region use yak dung stoves for cooking and heating, which release a large amount of PM_2.5, and part of them can escape into the room through the gaps in the stove body, leading to severe household air pollution. The PM_2.5 fugitive emission characteristics of yak dung stoves are important for further human exposure evaluation and indoor air quality improvement, but have been rarely addressed. Therefore, we tested a typical yak dung stove in a local household, used the mass balance method to calculate the dynamic PM_2.₅ fugitive emission rate, and analyzed its chemical composition. The results indicated that the average effective PM_2.5 fugitive emission rate was 6.42±4.36 mg/min, and the average fraction of effective PM_2.5 fugitive emission to total PM_2.5 emission was 12.4%±6.59%. During a whole combustion activity, the effective PM_2.5 fugitive emission rate rose rapidly in the early phase, reaching one or more peaks, and then declined to the low level. Frequent ignition and loading events led to higher PM_2.5 fugitive emission rates. The stove switched between an indoor PM_2.5 emission source and a sink during the whole combustion event under the chimney exhaust effect and stove operation. Organic carbon (OC) and water-soluble ions were the main components of net PM_2.5 fugitive emissions, contributing to 20.43%±8.11% and 20.09%±15.40%, respectively. This study can provide basic information for further evaluating the household PM_2.5 pollution attributed to yak dung stoves in the Qinghai-Tibet Plateau region and optimizing stove structures to reduce PM_2.5 fugitive emissions.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Building and Environment 工程技术-工程：环境

CiteScore

12.50

自引率

23.00%

发文量

1130

审稿时长

27 days

期刊介绍： Building and Environment, an international journal, is dedicated to publishing original research papers, comprehensive review articles, editorials, and short communications in the fields of building science, urban physics, and human interaction with the indoor and outdoor built environment. The journal emphasizes innovative technologies and knowledge verified through measurement and analysis. It covers environmental performance across various spatial scales, from cities and communities to buildings and systems, fostering collaborative, multi-disciplinary research with broader significance.