Spatiotemporal distribution of atmospheric polycyclic aromatic hydrocarbon emissions during 2013–2017 in mainland China

环境科学 多环芳烃 中国大陆 中国 排放清单 污染物 环境化学 大气科学 氮氧化物 空间分布 环境工程 环境保护 自然地理学 地理 化学 燃烧 遥感 考古 有机化学 地质学
作者
Teng Wang,Hong Liao,Hong Liao,Yan Li
出处
期刊:Science of The Total Environment [Elsevier BV]
卷期号:789: 148003-148003 被引量:38
标识
DOI:10.1016/j.scitotenv.2021.148003
摘要

Following implementation of the most stringent clean air policy in China, the emissions of NOx, SO2, and fine particles have greatly reduced since 2013. However, the emissions of polycyclic aromatic hydrocarbons (PAHs), which are highly toxic pollutants, and their spatiotemporal changes remain unclear. In this study, a 0.05° × 0.05° gridded PAH emission inventory was developed for mainland China during 2013-2017. The results show that the total PAH emissions have decreased from 112.92 Gg in 2013 to 100.09 Gg in 2017, with the fastest declines in the industrial (17.32%) and residential/commercial (10.58%) sectors. However, the decline in the PAH emissions is smaller than that of the NOX and SO2 emissions. The average emission density of PAHs in mainland China in 2017 was 10.43 kg/km2. North and East China have the largest PAH emissions. The residential/commercial, industrial, and transportation sectors are the major emission sources, accounting for 48.59%, 29.26%, and 17.21%, respectively. Carcinogenic PAH emissions accounted for 7.49% in mainland China, higher than those of developed countries (5.73%) and the global average (6.19%). Differences in the energy structures lead to significant differences in the spatial distribution of PAH emissions in various sectors. From 2013 to 2017, the emissions declined in most Chinese regions. The emission density in East China decreased the most, reaching 3.39 kg/km2, followed by North China (2.91 kg/km2). The magnitude of the decline in the PAH emissions and reasons for the decline significantly differ in different regions. Particular attention must be paid to the limited decline (5.22%) in Northwest China over the study period. Although China's emission density has been declining, it is still significantly higher than the global average. Therefore, China must further reduce the PAH emissions through technological innovation and reductions of energy consumption and, thus, reduce the regional lung cancer risk.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
yi完成签到 ,获得积分10
3秒前
wxnice完成签到,获得积分10
4秒前
量子星尘发布了新的文献求助10
6秒前
星辰大海应助大橙子采纳,获得10
15秒前
15秒前
七QI完成签到 ,获得积分10
16秒前
19秒前
褚香旋完成签到,获得积分10
19秒前
一只狗东西完成签到 ,获得积分10
21秒前
宇老师发布了新的文献求助10
22秒前
23秒前
qiqi发布了新的文献求助30
25秒前
大橙子发布了新的文献求助10
28秒前
wzhang完成签到,获得积分10
29秒前
ken131完成签到 ,获得积分10
32秒前
myl完成签到,获得积分10
33秒前
728完成签到,获得积分10
39秒前
xiaofeng5838完成签到,获得积分10
39秒前
ronnie完成签到,获得积分10
39秒前
42秒前
寒冷芷蕊完成签到,获得积分20
42秒前
42秒前
Jane完成签到,获得积分10
42秒前
一氧化二氢完成签到,获得积分10
48秒前
凡事发生必有利于我完成签到,获得积分10
49秒前
yihaiqin完成签到 ,获得积分10
53秒前
轩辕剑身完成签到,获得积分0
53秒前
coolkid完成签到 ,获得积分0
54秒前
你怎么那么美完成签到,获得积分10
54秒前
游艺完成签到 ,获得积分10
57秒前
冬月完成签到 ,获得积分10
57秒前
薛乎虚完成签到 ,获得积分10
58秒前
59秒前
大胖完成签到,获得积分10
59秒前
野火197完成签到,获得积分10
1分钟前
1分钟前
量子星尘发布了新的文献求助10
1分钟前
April完成签到,获得积分10
1分钟前
周舟完成签到 ,获得积分10
1分钟前
V_I_G完成签到 ,获得积分10
1分钟前
高分求助中
【提示信息,请勿应助】关于scihub 10000
Les Mantodea de Guyane: Insecta, Polyneoptera [The Mantids of French Guiana] 3000
徐淮辽南地区新元古代叠层石及生物地层 3000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Handbook of Industrial Diamonds.Vol2 1100
Global Eyelash Assessment scale (GEA) 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 550
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 4038157
求助须知:如何正确求助?哪些是违规求助? 3575869
关于积分的说明 11373842
捐赠科研通 3305650
什么是DOI,文献DOI怎么找? 1819255
邀请新用户注册赠送积分活动 892655
科研通“疑难数据库(出版商)”最低求助积分说明 815022