TY - JOUR
T1 - Characterization of the chemical components and bioreactivity of fine particulate matter produced during crop-residue burning in China
AU - Chuang, Hsiao Chi
AU - Sun, Jian
AU - Ni, Haiyan
AU - Tian, Jie
AU - Lui, Ka Hei
AU - Han, Yongming
AU - Cao, Junji
AU - Huang, Ru Jin
AU - Shen, Zhenxing
AU - Ho, Kin Fai
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2019/2
Y1 - 2019/2
N2 - Five types of crop residue (rice, wheat, corn, sorghum, and sugarcane) collected from different provinces in China were used to characterize the chemical components and bioreactivity properties of fine particulate matter (PM2.5) emissions during open-burning scenarios. Organic carbon (OC) and elemental carbon (EC) were the most abundant components, contributing 41.7%–54.9% of PM2.5 emissions. The OC/EC ratio ranged from 8.8 to 31.2, indicating that organic matter was the dominant component of emissions. Potassium and chloride were the most abundant components in the portion of PM2.5 composed of water-soluble ions. The coefficient of divergence ranged from 0.27 to 0.51 among various emissions profiles. All samples exposed to a high PM2.5 concentration (150 μg/mL) exhibited a significant reduction in cell viability (A549 lung alveolar epithelial cells) and increase in lactic dehydrogenase (LDH) and interleukin 6 levels compared with those exposed to 20 or 0 μg/mL. Higher bioreactivity (determined according to LDH and interleukin 6 level) was observed for the rice, wheat, and corn samples than for the sorghum straw samples. Pearson's correlation analysis suggested that OC, heavy metals (chromium, manganese, iron, nickel, copper, zinc, tin, and barium), and water-soluble ions (fluoride, calcium, and sulfate) are the components potentially associated with LDH production. The PM2.5 components emitted during biomass burning were characterized and proved to be correlated with oxidative and inflammatory responses in A549 cells.
AB - Five types of crop residue (rice, wheat, corn, sorghum, and sugarcane) collected from different provinces in China were used to characterize the chemical components and bioreactivity properties of fine particulate matter (PM2.5) emissions during open-burning scenarios. Organic carbon (OC) and elemental carbon (EC) were the most abundant components, contributing 41.7%–54.9% of PM2.5 emissions. The OC/EC ratio ranged from 8.8 to 31.2, indicating that organic matter was the dominant component of emissions. Potassium and chloride were the most abundant components in the portion of PM2.5 composed of water-soluble ions. The coefficient of divergence ranged from 0.27 to 0.51 among various emissions profiles. All samples exposed to a high PM2.5 concentration (150 μg/mL) exhibited a significant reduction in cell viability (A549 lung alveolar epithelial cells) and increase in lactic dehydrogenase (LDH) and interleukin 6 levels compared with those exposed to 20 or 0 μg/mL. Higher bioreactivity (determined according to LDH and interleukin 6 level) was observed for the rice, wheat, and corn samples than for the sorghum straw samples. Pearson's correlation analysis suggested that OC, heavy metals (chromium, manganese, iron, nickel, copper, zinc, tin, and barium), and water-soluble ions (fluoride, calcium, and sulfate) are the components potentially associated with LDH production. The PM2.5 components emitted during biomass burning were characterized and proved to be correlated with oxidative and inflammatory responses in A549 cells.
KW - Bioreactivity
KW - Crop residue
KW - Open burning
KW - PM
KW - Respiratory effects
UR - https://www.scopus.com/pages/publications/85057176230
U2 - 10.1016/j.envpol.2018.10.119
DO - 10.1016/j.envpol.2018.10.119
M3 - 文章
C2 - 30423537
AN - SCOPUS:85057176230
SN - 0269-7491
VL - 245
SP - 226
EP - 234
JO - Environmental Pollution
JF - Environmental Pollution
ER -