This page has only limited features, please log in for full access.

Dr. Na Li
Jilin Jianzhu University

Basic Info

Basic Info is private.

Research Keywords & Expertise

0 Aerosol
0 PM2.5
0 O3
0 Biomass and Carbon
0 human health assessment

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Research article
Published: 06 January 2020 in Environmental Science and Pollution Research
Reads 0
Downloads 0

The present study offers the first evaluation of organic and elemental carbon (OC and EC) of submicron (PM1) fraction in Changchun (Northeast China) during a year-long sampling period (October 24, 2016 to October 23, 2017). More than 288 PM1 (particulate matter with an aerodynamic diameter of less than 1 μm) samples were collected. The PM1 concentrations ranged from 3.78 to 451.08 μg·m−3, with an average of 57.73 μg·m−3, which was 1.65 times higher than the Chinese National Standard II. Following the concept of the well-known IMPROVE algorithm, OC and EC values were obtained. The OC values ranged from 1.18 to 82.54 μg∙m−3, and the EC values were from 0.30 to 14.19 μg∙m−3. Total carbon (TC = EC + OC) constituted 9.11–40.35% of the total PM1 mass, and OC dominated over EC. The average OC/EC ratio was 4.78, which implied a low percentage for vehicles and a high contribution of coal and biomass consumption to PM1. Among OC, the annual primary organic carbon (POC) value was 7.69 μg∙m−3, accounting for 63% of the OC, while secondary organic carbon (SOC) contributed 37% with 4.12 μg∙m−3. Among EC, CHAR (EC1) dominated over SOOT (EC2 + EC3), and the CHAR/SOOR ratio ranged from 2.91 to 28.55. The results of the OC and EC values as well as the OC/EC and CHAR/SOOT ratios suggest that possible sources of PM1 include vehicles, coal burning, cooking, and biomass burning.

ACS Style

Na Li; Xin Wei; Weizheng Han; Siyue Sun; Jinghui Wu. Characteristics and temporal variations of organic and elemental carbon aerosols in PM1 in Changchun, Northeast China. Environmental Science and Pollution Research 2020, 27, 8653 -8661.

AMA Style

Na Li, Xin Wei, Weizheng Han, Siyue Sun, Jinghui Wu. Characteristics and temporal variations of organic and elemental carbon aerosols in PM1 in Changchun, Northeast China. Environmental Science and Pollution Research. 2020; 27 (8):8653-8661.

Chicago/Turabian Style

Na Li; Xin Wei; Weizheng Han; Siyue Sun; Jinghui Wu. 2020. "Characteristics and temporal variations of organic and elemental carbon aerosols in PM1 in Changchun, Northeast China." Environmental Science and Pollution Research 27, no. 8: 8653-8661.

Journal article
Published: 27 August 2018 in International Journal of Environmental Research and Public Health
Reads 0
Downloads 0

Road dust, which contains trace elements and certain organic matter that can be harmful to human health, plays an important role in atmospheric pollution. In this paper, concentrations of 16 elements in the road dust of Changchun, China were determined experimentally. A total of 100 samples were collected using plastic brushes and dustpans, and the elements were analyzed by an inductively coupled plasma optical emission spectrometer (ICP-OES). It was indicated that the elements could be divided into major and trace elements. The concentration of trace elements followed the trend: mercury (Hg) > manganese (Mn) > zinc (Zn) > lead (Pb) > chromium (Cr) > copper (Cu) > vanadium (V) > arsenic (As) > nickel (Ni) > cobalt (Co) > cadmium (Cd). Contamination-level-assessment calculated by the geo-accumulation index (Igeo) showed that the pollution-level ranged from non-contaminated to extreme contamination, while the calculations of enrichment factor (EF) showed that EF values exhibited a decreasing trend: Cd > Hg > As > Pb > Cu > Co > Zn > Ni > Cr > V > Mn > Mg > Fe > Sr > Ba. In our study, ingestion was the greatest exposure pathway for humans to intake trace elements by calculating the average daily dose (ADD) from three routes (ingestion, inhalation, and dermal contact). According to the health risk assessment results, the non-carcinogenic risks that human beings suffered from these elements were insignificant. Additionally, the hazard quotient (HQ) values were approximately one-tenth in the case of children. Meanwhile, the total excess cancer risk (ECR) was also lower than the acceptable level (10−6–10−4) for both adults and children.

ACS Style

Na Li; Weizheng Han; Jie Tang; Jianmin Bian; Siyue Sun; Tiehong Song. Pollution Characteristics and Human Health Risks of Elements in Road Dust in Changchun, China. International Journal of Environmental Research and Public Health 2018, 15, 1843 .

AMA Style

Na Li, Weizheng Han, Jie Tang, Jianmin Bian, Siyue Sun, Tiehong Song. Pollution Characteristics and Human Health Risks of Elements in Road Dust in Changchun, China. International Journal of Environmental Research and Public Health. 2018; 15 (9):1843.

Chicago/Turabian Style

Na Li; Weizheng Han; Jie Tang; Jianmin Bian; Siyue Sun; Tiehong Song. 2018. "Pollution Characteristics and Human Health Risks of Elements in Road Dust in Changchun, China." International Journal of Environmental Research and Public Health 15, no. 9: 1843.