Distribution and origin of carbonaceous aerosol over a rural high-mountain lake area, Northern China and its transport significance

Y. M. Han; Z. W. Han; J. J. Cao; J. C. Chow; J. G. Watson; Z. S. An; S. X. Liu; R. J. Zhang

doi:10.1016/j.atmosenv.2007.12.020

Distribution and origin of carbonaceous aerosol over a rural high-mountain lake area, Northern China and its transport significance

Y. M. Han
, Z. W. Han
, J. J. Cao
, J. C. Chow
, J. G. Watson
, Z. S. An
, S. X. Liu
, R. J. Zhang

School of Human Settlements and Civil Engineering

CAS - Institute of Earth Environment
CAS - Institute of Atmospheric Physics
Desert Research Institute

Research output: Contribution to journal › Article › peer-review

87 Scopus citations

Abstract

PM_2.5 and TSP samples were collected at Lake Daihai, a rural high-mountain area in China, in four seasons during 2005-2007. Organic carbon (OC), elemental carbon (EC), char-EC, and soot-EC were analyzed using the thermal/optical reflectance (TOR) method with different temperature plateaus and oxidation atmospheres. TC, OC, EC, and char-EC concentrations of TSP and PM_2.5 showed seasonal variations with the highest concentrations in winter and the lowest in summer, while soot-EC reveals a little different variation, with the highest concentration in spring, indicating different source contributions from other parameters. OC/EC correlations were weaker at Daihai than those from urban areas. Although little differences existed in TSP and PM_2.5, average OC/EC ratios varied seasonally and ranged from ∼9.0 in winter to ∼5.0 in spring. Char-/soot-EC ratios showed similar pattern, with the highest average ratios (>3.0) in winter, consistent with the contributions from residential biomass burning and coal combustion. Back trajectories related the highest carbon concentrations with the southeasterly air masses and the lowest carbon levels with northward flows.

Original language	English
Pages (from-to)	2405-2414
Number of pages	10
Journal	Atmospheric Environment
Volume	42
Issue number	10
DOIs	https://doi.org/10.1016/j.atmosenv.2007.12.020
State	Published - Mar 2008

Keywords

Black carbon
Char
Char-/soot-EC ratios
Soot
Thermal/optical reflectance (TOR) method

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10.1016/j.atmosenv.2007.12.020

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@article{611df3bf37c0451ab86bd1652bb7d873,

title = "Distribution and origin of carbonaceous aerosol over a rural high-mountain lake area, Northern China and its transport significance",

abstract = "PM2.5 and TSP samples were collected at Lake Daihai, a rural high-mountain area in China, in four seasons during 2005-2007. Organic carbon (OC), elemental carbon (EC), char-EC, and soot-EC were analyzed using the thermal/optical reflectance (TOR) method with different temperature plateaus and oxidation atmospheres. TC, OC, EC, and char-EC concentrations of TSP and PM2.5 showed seasonal variations with the highest concentrations in winter and the lowest in summer, while soot-EC reveals a little different variation, with the highest concentration in spring, indicating different source contributions from other parameters. OC/EC correlations were weaker at Daihai than those from urban areas. Although little differences existed in TSP and PM2.5, average OC/EC ratios varied seasonally and ranged from ∼9.0 in winter to ∼5.0 in spring. Char-/soot-EC ratios showed similar pattern, with the highest average ratios (>3.0) in winter, consistent with the contributions from residential biomass burning and coal combustion. Back trajectories related the highest carbon concentrations with the southeasterly air masses and the lowest carbon levels with northward flows.",

keywords = "Black carbon, Char, Char-/soot-EC ratios, Soot, Thermal/optical reflectance (TOR) method",

author = "Han, \{Y. M.\} and Han, \{Z. W.\} and Cao, \{J. J.\} and Chow, \{J. C.\} and Watson, \{J. G.\} and An, \{Z. S.\} and Liu, \{S. X.\} and Zhang, \{R. J.\}",

year = "2008",

month = mar,

doi = "10.1016/j.atmosenv.2007.12.020",

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TY - JOUR

T1 - Distribution and origin of carbonaceous aerosol over a rural high-mountain lake area, Northern China and its transport significance

AU - Han, Y. M.

AU - Han, Z. W.

AU - Cao, J. J.

AU - Chow, J. C.

AU - Watson, J. G.

AU - An, Z. S.

AU - Liu, S. X.

AU - Zhang, R. J.

PY - 2008/3

Y1 - 2008/3

N2 - PM2.5 and TSP samples were collected at Lake Daihai, a rural high-mountain area in China, in four seasons during 2005-2007. Organic carbon (OC), elemental carbon (EC), char-EC, and soot-EC were analyzed using the thermal/optical reflectance (TOR) method with different temperature plateaus and oxidation atmospheres. TC, OC, EC, and char-EC concentrations of TSP and PM2.5 showed seasonal variations with the highest concentrations in winter and the lowest in summer, while soot-EC reveals a little different variation, with the highest concentration in spring, indicating different source contributions from other parameters. OC/EC correlations were weaker at Daihai than those from urban areas. Although little differences existed in TSP and PM2.5, average OC/EC ratios varied seasonally and ranged from ∼9.0 in winter to ∼5.0 in spring. Char-/soot-EC ratios showed similar pattern, with the highest average ratios (>3.0) in winter, consistent with the contributions from residential biomass burning and coal combustion. Back trajectories related the highest carbon concentrations with the southeasterly air masses and the lowest carbon levels with northward flows.

AB - PM2.5 and TSP samples were collected at Lake Daihai, a rural high-mountain area in China, in four seasons during 2005-2007. Organic carbon (OC), elemental carbon (EC), char-EC, and soot-EC were analyzed using the thermal/optical reflectance (TOR) method with different temperature plateaus and oxidation atmospheres. TC, OC, EC, and char-EC concentrations of TSP and PM2.5 showed seasonal variations with the highest concentrations in winter and the lowest in summer, while soot-EC reveals a little different variation, with the highest concentration in spring, indicating different source contributions from other parameters. OC/EC correlations were weaker at Daihai than those from urban areas. Although little differences existed in TSP and PM2.5, average OC/EC ratios varied seasonally and ranged from ∼9.0 in winter to ∼5.0 in spring. Char-/soot-EC ratios showed similar pattern, with the highest average ratios (>3.0) in winter, consistent with the contributions from residential biomass burning and coal combustion. Back trajectories related the highest carbon concentrations with the southeasterly air masses and the lowest carbon levels with northward flows.

KW - Black carbon

KW - Char

KW - Char-/soot-EC ratios

KW - Soot

KW - Thermal/optical reflectance (TOR) method

UR - https://www.scopus.com/pages/publications/40049099258

U2 - 10.1016/j.atmosenv.2007.12.020

DO - 10.1016/j.atmosenv.2007.12.020

M3 - 文章

AN - SCOPUS:40049099258

SN - 1352-2310

VL - 42

SP - 2405

EP - 2414

JO - Atmospheric Environment

JF - Atmospheric Environment

IS - 10

ER -

Distribution and origin of carbonaceous aerosol over a rural high-mountain lake area, Northern China and its transport significance

Abstract

Keywords

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