Molecular distributions of dicarboxylic acids, oxocarboxylic acids and α-dicarbonyls in PM2.5 collected at the top of Mt. Tai, North China, during the wheat burning season of 2014
Molecular distributions of dicarboxylic acids, oxocarboxylic acids and α-dicarbonyls in PM2.5 collected at the top of Mt. Tai, North China, during the wheat burning season of 2014
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2014年烧麦季华北泰山山顶PM2.5中二羧酸、氧代羧酸和α-二羰基化合物的分子分布
DOI：
10.5194/acp-18-10741-2018
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发表时间：
2018-07
影响因子：
6.3
通讯作者：
Wenxing Wang
中科院分区：
文献类型：
--
作者：
Yanhong Zhu;Lingxiao Yang;Jianmin Chen;Kimitaka Kawamura;Mamiko Sato;Andreas Tilgner;Dominik van Pinxteren;Ying Chen;Likun Xue;Xinfeng Wang;Isobel J. Simpson;Hartmut Herrmann;Donald R. Blake;Wenxing Wang
。在芒特收集的细颗粒物 (PM2.5) 样本
对2014年夏季华北平原的泰山进行了分析
二羧酸和相关化合物（氧代羧酸和 α-二羰基）（DCRC）。 DCRCs总浓度为1050±580
白天和夜间分别为 1040±490 ng m−3。
尽管这些浓度比同类浓度低约 2 倍
根据 2006 年的测量，此处报告的浓度约为 1-13 倍
高于世界其他主要城市之前的测量值。
DCRC 的分子分布表明，草酸 (C2) 是
优势物种 (50 %)，其次是琥珀酸 (C4) (12 %)
和丙二酸 (C3) (8%)。 WRF模型显示泰山
在战役和远程运输期间主要在自由对流层
是控制测量化合物分布的主要因素
泰山。大多数样品 (79%) 的浓度相当
白天和晚上，其昼夜浓度比介于
0.9 和 1.1。多日运输被认为是造成这种情况的一个重要原因。
相似的浓度。 DCRC与其气体的相关性分析
前体以及 C2 和硫酸盐之间指示的前体排放和
长程运输过程中的水相氧化也可能发挥作用
发挥重要作用，尤其是在夜间。标明来源标识
光化学老化引起的人类活动造成了
约占总方差的 60%，是泰山的主要来源。
然而，生物质燃烧仅在上半年才重要。
测量周期。钾 (K+) 和 DCRC 的测量值约为
比测量期后半段高出 2 倍。这
左旋葡聚糖（一种生物质燃烧示踪剂）的浓度降低了约
2006 年至 2014 年间为 80%，表明生物质燃烧可能
2006年至2014年间有所下降。
. Fine particulate matter (PM2.5) samples collected at Mount
(Mt.) Tai in the North China Plain during summer 2014 were analyzed for
dicarboxylic acids and related compounds (oxocarboxylic acids and α-dicarbonyls) (DCRCs). The total concentration of DCRCs was 1050±580
and 1040±490 ng m−3 during the day and night, respectively.
Although these concentrations were about 2 times lower than similar
measurements in 2006, the concentrations reported here were about 1–13 times
higher than previous measurements in other major cities in the world.
Molecular distributions of DCRCs revealed that oxalic acid (C2) was the
dominant species (50 %), followed by succinic acid (C4) (12 %)
and malonic acid (C3) (8 %). WRF modeling revealed that Mt. Tai was
mostly in the free troposphere during the campaign and long-range transport
was a major factor governing the distributions of the measured compounds at
Mt. Tai. A majority of the samples (79 %) had comparable concentrations
during the day and night, with their day–night concentration ratios between
0.9 and 1.1. Multi-day transport was considered an important reason for the
similar concentrations. Correlation analyses of DCRCs and their gas
precursors and between C2 and sulfate indicated precursor emissions and
aqueous-phase oxidations during long-range transport also likely play an
important role, especially during the night. Source identification indicated
that anthropogenic activities followed by photochemical aging accounted for
about 60 % of the total variance and were the dominant source at Mt. Tai.
However, biomass burning was only important during the first half of the
measurement period. Measurements of potassium (K+) and DCRCs were about
2 times higher than those from the second half of the measurement period. The
concentration of levoglucosan, a biomass burning tracer, decreased by about
80 % between 2006 and 2014, indicating that biomass burning may have
decreased between 2006 and 2014.
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DOI：
10.1201/b10345-5
发表时间：
2010-11
期刊：
Encyclopedia of Autism Spectrum Disorders
影响因子：
--
作者：
Kim-Anh Lê Cao;Z. Welham
通讯作者：
Kim-Anh Lê Cao;Z. Welham
影响因子：
5
作者：
Gehui Wang;Liming Huang;Shixiang Gao;Songting Gao;Lian-sheng Wang
通讯作者：
Gehui Wang;Liming Huang;Shixiang Gao;Songting Gao;Lian-sheng Wang
DOI：
--
发表时间：
2013
期刊：
China Environmental Science
影响因子：
--
作者：
Mu Qua
通讯作者：
Mu Qua
影响因子：
8.8
作者：
M. Viana;X. Querol;A. Alastuey;J. Gil;M. Menéndez
通讯作者：
M. Viana;X. Querol;A. Alastuey;J. Gil;M. Menéndez
影响因子：
3.7
作者：
M. Timmerman
通讯作者：
M. Timmerman