{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,18]],"date-time":"2026-07-18T05:13:32Z","timestamp":1784351612851,"version":"3.55.0"},"reference-count":61,"publisher":"Public Library of Science (PLoS)","issue":"4","license":[{"start":{"date-parts":[[2021,4,20]],"date-time":"2021-04-20T00:00:00Z","timestamp":1618876800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Strategic Priority Research Program of Chinese Academy of Sciences, Pan-Third Pole Environment Study for a Green Silk Road","award":["XDA20040400"],"award-info":[{"award-number":["XDA20040400"]}]},{"name":"Research Plan of Universities in Xinjiang Province","award":["XJEDU2020Y008"],"award-info":[{"award-number":["XJEDU2020Y008"]}]},{"name":"Research and Innovation Program for Postgraduates in Xinjiang Province","award":["XJ2019g054"],"award-info":[{"award-number":["XJ2019g054"]}]}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS ONE"],"abstract":"<jats:p>The arid zone of central Asia secluded inland and has the typical features of the atmosphere. Human activities have had a significant impact on the air quality in this region. Urumqi is a key city in the core area of the Silk Road and an important economic center in Northwestern China. The urban environment is playing an increasingly important role in regional development. To study the characteristics and influencing factors of the main atmospheric pollutants in Urumqi, this study selected Urumqi\u2019s daily air quality index (AQI) data and observation data of six major pollutants including fine particulate matter (PM<jats:sub>2.5<\/jats:sub>), breathable particulate matter (PM<jats:sub>10<\/jats:sub>), sulfur dioxide (SO<jats:sub>2<\/jats:sub>), nitrogen dioxide (NO<jats:sub>2<\/jats:sub>), carbon monoxide (CO), and ozone (O<jats:sub>3_8h<\/jats:sub>) from 2014 to 2018 in conjunction with meteorological data to use a backward trajectory analysis method to study the main characteristics of atmospheric pollutants and their sources in Urumqi from 2014 to 2018. The results showed that: (1) From 2014 to 2018, the annual average of PM<jats:sub>2.5<\/jats:sub>, PM<jats:sub>10<\/jats:sub>, SO<jats:sub>2<\/jats:sub>, NO<jats:sub>2<\/jats:sub> and CO concentrations showed a downward trend, and O<jats:sub>3_8h<\/jats:sub> concentrations first increased, then decreased, and then increased, reaching the highest value in 2018 (82.15 \u03bcg\u00b7m<jats:sup>-3<\/jats:sup>); The seasonal changes of PM<jats:sub>2.5<\/jats:sub>, PM<jats:sub>10<\/jats:sub>, SO<jats:sub>2<\/jats:sub>, NO<jats:sub>2<\/jats:sub> and CO concentrations were characterized by low values in summer and fall seasons and high values in winter and spring seasons. The concentration of O<jats:sub>3_8h<\/jats:sub>, however, was in the opposite trend, showing the high values in summer and fall seasons, and low values in winter and spring seasons. From 2014 to 2018, with the exception of O<jats:sub>3_8h<\/jats:sub>, the concentration changes of the other five major air pollutants were high in December, January, and February, and low in May, June, and July; the daily changes showed a \u201cU-shaped\u201d change during the year. The high-value areas of the \"U-shaped\" mode formed around the 50th day and the 350th day. (2) The high-value area of AQI was from the end of fall (November) to the beginning of the following spring (March), and the low-value area was from April to October. It showed a U-shaped change trend during the year and the value was mainly distributed between 50 and 100. (3) The concentrations of major air pollutants in Urumqi were significantly negatively correlated with precipitation, temperature, and humidity (<jats:italic>P<\/jats:italic>&lt;0.01), and had the highest correlation coefficients with temperature. (4) Based on the above analysis results, this study analyzed two severe pollution events from late November to early December. Analysis showed that the PM<jats:sub>2.5<\/jats:sub>\/PM<jats:sub>10<\/jats:sub> ratio in two events remained at about 0.1 when the pollution occurred, but was higher before and after the pollution (up to 1.46). It was shown that the pollution was a simple sandstorm process. Backward trajectory analysis clustered the airflow trajectories reaching Urumqi into 4 categories, and the trajectories from central Asia contributed the maximum values of average PM<jats:sub>2.5<\/jats:sub> and PM<jats:sub>10<\/jats:sub> concentrations.<\/jats:p>","DOI":"10.1371\/journal.pone.0249563","type":"journal-article","created":{"date-parts":[[2021,4,20]],"date-time":"2021-04-20T20:28:23Z","timestamp":1618950503000},"page":"e0249563","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":25,"title":["Characteristics and sources of atmospheric pollutants in typical inland cities in arid regions of central Asia: A case study of Urumqi city"],"prefix":"10.1371","volume":"16","author":[{"given":"Zongying","family":"Li","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yao","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhonglin","family":"Xu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8548-8046","authenticated-orcid":true,"given":"Yue\u2019e","family":"Cao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"340","published-online":{"date-parts":[[2021,4,20]]},"reference":[{"key":"pone.0249563.ref001","volume-title":"Urbanization Process and Its Eco-environmental Effects in Typical Regions of China","author":"Z. Weiqi","year":"2017"},{"key":"pone.0249563.ref002","doi-asserted-by":"crossref","first-page":"82","DOI":"10.1016\/j.cities.2016.04.002","article-title":"Sustainable urbanization in China: A comprehensive literature review.","volume":"55","author":"Y. Tan","year":"2016","journal-title":"Cities"},{"key":"pone.0249563.ref003","doi-asserted-by":"crossref","first-page":"97","DOI":"10.1016\/j.habitatint.2017.11.009","article-title":"Assessment on the urbanization strategy in China: Achievements, challenges and reflections.","volume":"71","author":"X. Guan","year":"2018","journal-title":"Habitat International"},{"issue":"08","key":"pone.0249563.ref004","first-page":"3447","article-title":"Effects of Urban Expansion and Changes in Urban Characteristics on PM2. 5 Pollution in China.","volume":"40","author":"W. Guilin","year":"2019","journal-title":"Environmental Science"},{"issue":"3","key":"pone.0249563.ref005","first-page":"594","article-title":"United nations department of economic and social affairs, population division world mortality report 2005.","volume":"32","author":"J. Bongaarts","year":"2006","journal-title":"Population and Development Review"},{"key":"pone.0249563.ref006","doi-asserted-by":"crossref","first-page":"789","DOI":"10.1016\/j.scitotenv.2018.06.094","article-title":"Urbanization strategy and environmental changes: An insight with relationship between population change and fine particulate pollution.","volume":"642","author":"L. Han","year":"2018","journal-title":"Science of the Total Environment"},{"key":"pone.0249563.ref007","first-page":"1","article-title":"Urban air pollution in China: destination image and risk perceptions.","author":"S. Becken","year":"2017","journal-title":"Journal of Sustainable Tourism"},{"key":"pone.0249563.ref008","first-page":"S0048969716315108","article-title":"Long-term exposure to urban air pollution and lung cancer mortality: A 12-year cohort study in Northern China.","author":"X. Chen","year":"2016","journal-title":"Science of the Total Environment"},{"key":"pone.0249563.ref009","doi-asserted-by":"crossref","first-page":"117066","DOI":"10.1016\/j.atmosenv.2019.117066","article-title":"A comprehensive analysis of the spatio-temporal variation of urban air pollution in China during 2014\u20132018.","volume":"220","author":"H. Fan","year":"2020","journal-title":"Atmospheric Environment"},{"issue":"1","key":"pone.0249563.ref010","first-page":"397","volume":"27","author":"K. He","year":"2011","journal-title":"URBAN AIR POLLUTION IN CHINA: Current Status, Characteristics, and Progress"},{"key":"pone.0249563.ref011","doi-asserted-by":"crossref","first-page":"312","DOI":"10.1016\/j.jclepro.2018.03.293","article-title":"Changes in urban air quality during urbanization in China.","volume":"188","author":"B. Lin","year":"2018","journal-title":"Journal of Cleaner Production"},{"issue":"3","key":"pone.0249563.ref012","doi-asserted-by":"crossref","first-page":"257","DOI":"10.1093\/nsr\/nwv003","article-title":"Insight into characteristics and sources of PM2. 5 in the Beijing\u2013Tianjin\u2013Hebei region, China.","volume":"2","author":"M. Hu","year":"2015","journal-title":"National Science Review"},{"key":"pone.0249563.ref013","doi-asserted-by":"crossref","first-page":"714","DOI":"10.1016\/j.envpol.2017.10.123","article-title":"Temporal-spatial characteristics and source apportionment of PM2. 5 as well as its associated chemical species in the Beijing-Tianjin-Hebei region of China.","volume":"233","author":"J. Gao","year":"2018","journal-title":"Environmental pollution"},{"issue":"oct.","key":"pone.0249563.ref014","first-page":"598","article-title":"Spatial and temporal variability of PM_(2.5) and PM_(10) over the North China Plain and the Yangtze River Delta, China.","volume":"95","author":"J. Hu","year":"2015","journal-title":"Atmospheric Environment"},{"key":"pone.0249563.ref015","doi-asserted-by":"crossref","first-page":"625","DOI":"10.1016\/j.envres.2017.04.026","article-title":"Air pollution characteristics and health risks in Henan Province, China.","volume":"156","author":"F. Shen","year":"2017","journal-title":"Environmental Research"},{"key":"pone.0249563.ref016","doi-asserted-by":"crossref","first-page":"1157","DOI":"10.4209\/aaqr.2012.01.0003","article-title":"Indoor and outdoor chemical components of PM2. 5 in the rural areas of Northwestern China.","volume":"12","author":"C.-S. Zhu","year":"2012","journal-title":"Aerosol Air Qual. Res"},{"issue":"02","key":"pone.0249563.ref017","first-page":"401","article-title":"Analysis of air pollution episodes over different cites in the Yangtze River Delta.","volume":"38","author":"D. Farong","year":"2018","journal-title":"China Environmental Science"},{"issue":"06","key":"pone.0249563.ref018","first-page":"150","article-title":"The study of characteristics of air pollution and meteorological factors in Hohhot.","volume":"33","author":"X. Lina","year":"2019","journal-title":"Journal of Arid Land Resources and Environmental"},{"issue":"07","key":"pone.0249563.ref019","first-page":"1119","article-title":"Analysis of the driving factors of PM2.5 in Jiangsu province based on grey correlation model.","volume":"71","author":"H. Xiang","year":"2016","journal-title":"Acta Geographica Sinica"},{"issue":"09","key":"pone.0249563.ref020","first-page":"1","article-title":"Analysis of Beijing Air Quality Based on Time Series.","author":"Z. Huan","year":"2019","journal-title":"Science and Technology Innovation"},{"issue":"12","key":"pone.0249563.ref021","doi-asserted-by":"crossref","first-page":"2050","DOI":"10.1016\/j.atmosenv.2011.01.060","article-title":"A novel, fuzzy-based air quality index (FAQI) for air quality assessment.","volume":"45","author":"M.H. Sowlat","year":"2011","journal-title":"Atmospheric Environment"},{"issue":"38","key":"pone.0249563.ref022","doi-asserted-by":"crossref","first-page":"8442","DOI":"10.1016\/j.atmosenv.2007.07.003","article-title":"A novel air pollution index based on the relative risk of daily mortality associated with short-term exposure to common air pollutants.","volume":"41","author":"E.K. Cairncross","year":"2007","journal-title":"Atmospheric environment"},{"key":"pone.0249563.ref023","doi-asserted-by":"crossref","first-page":"1342","DOI":"10.1016\/j.jclepro.2018.06.108","article-title":"The driving factors of air quality index in China.","volume":"197","author":"D. Zhan","year":"2018","journal-title":"Journal of Cleaner Production"},{"key":"pone.0249563.ref024","article-title":"The driving factors of air quality index in China.","author":"D. Zhan","year":"2018","journal-title":"Journal of Cleaner Production"},{"issue":"05","key":"pone.0249563.ref025","first-page":"986","article-title":"Spatial Distributions of Atmospheric Contaminations and Effect of Surface Wind in Urumqi.","author":"W. Yan","year":"2008","journal-title":"Journal of Desert Research"},{"issue":"2","key":"pone.0249563.ref026","article-title":"MeteoInfo: GIS software for meteorological data visualization and analysis.","volume":"21","author":"Y.Q. Wang","year":"2014","journal-title":"Meteorological Applications"},{"key":"pone.0249563.ref027","volume-title":"The climate of China","author":"M. Domr\u00f6s","year":"2012"},{"issue":"33","key":"pone.0249563.ref028","doi-asserted-by":"crossref","first-page":"6380","DOI":"10.1016\/j.atmosenv.2006.05.056","article-title":"A preliminary assessment of major air pollutants in the city of Suzhou, China.","volume":"40","author":"F. Costabile","year":"2006","journal-title":"Atmospheric Environment"},{"issue":"05","key":"pone.0249563.ref029","first-page":"2002","article-title":"Inventory of SO2 emission in Xi\u2019an and its contribution to the PM2.5 of the municipality area.","volume":"18","author":"Y. Dongjie","year":"2018","journal-title":"Journal of Safety and Environment"},{"key":"pone.0249563.ref030","volume-title":"Impacts of Relocation, Developmentand West-East Transmission of Energy and Resource Industry in Western China on SO2 Emission and Contamination in Northwestern, China","author":"L. Zaili","year":"2018"},{"issue":"3","key":"pone.0249563.ref031","doi-asserted-by":"crossref","first-page":"396","DOI":"10.3390\/ijerph16030396","article-title":"Seasonal Characteristics and Particle-size Distributions of Particulate Air Pollutants in Urumqi.","volume":"16","author":"X. Meng","year":"2019","journal-title":"International journal of environmental research and public health"},{"key":"pone.0249563.ref032","doi-asserted-by":"crossref","first-page":"202","DOI":"10.1016\/j.envpol.2016.03.073","article-title":"Assessment of microbial communities in PM1 and PM10 of Urumqi during winter.","volume":"214","author":"H. Gou","year":"2016","journal-title":"Environmental Pollution"},{"key":"pone.0249563.ref033","doi-asserted-by":"crossref","first-page":"1767","DOI":"10.1016\/j.jclepro.2015.08.015","article-title":"Implications of the 11th and 12th Five-Year Plans for energy conservation and CO2 and air pollutants reduction: a case study from the city of Urumqi, China.","volume":"112","author":"J. Zhou","year":"2016","journal-title":"Journal of Cleaner Production"},{"issue":"3","key":"pone.0249563.ref034","first-page":"169","article-title":"Change Trend on Environmental Air Quality in Shihezi City [J].","volume":"18","author":"Y. Wang","year":"2004","journal-title":"Arid Environmental Monitoring"},{"key":"pone.0249563.ref035","doi-asserted-by":"crossref","first-page":"379","DOI":"10.1007\/1-4020-4232-9_32","volume-title":"Problems of Air Quality in Tashkent City, in Environmental Simulation Chambers: Application to Atmospheric Chemical Processes","author":"G. Tolkacheva","year":"2006"},{"issue":"1","key":"pone.0249563.ref036","first-page":"49","article-title":"Assessment of the air quality of Almaty. Focussing on the traffic component.","volume":"5","author":"L. Carlsen","year":"2013","journal-title":"International Journal of Biology and Chemistry"},{"issue":"23","key":"pone.0249563.ref037","doi-asserted-by":"crossref","first-page":"5063","DOI":"10.1016\/j.scitotenv.2011.08.049","article-title":"Air pollution episodes associated with East Asian winter monsoons.","volume":"409","author":"P. Hien","year":"2011","journal-title":"Science of the total environment"},{"key":"pone.0249563.ref038","doi-asserted-by":"crossref","first-page":"87","DOI":"10.1007\/978-3-319-59489-7_5","volume-title":"Connection Between East Asian Air Pollution and Monsoon System, in Air Pollution in Eastern Asia: An Integrated Perspective","author":"M. Chin","year":"2017"},{"issue":"2","key":"pone.0249563.ref039","doi-asserted-by":"crossref","first-page":"80","DOI":"10.1111\/j.1600-0668.1998.t01-2-00003.x","article-title":"Impact of temperature and humidity on the perception of indoor air quality.","volume":"8","author":"L. Fang","year":"1998","journal-title":"Indoor air"},{"key":"pone.0249563.ref040","doi-asserted-by":"crossref","first-page":"68","DOI":"10.1016\/j.envpol.2014.11.028","article-title":"Humidity plays an important role in the PM2. 5 pollution in Beijing.","volume":"197","author":"Y. Cheng","year":"2015","journal-title":"Environmental pollution"},{"key":"pone.0249563.ref041","doi-asserted-by":"crossref","first-page":"75","DOI":"10.1016\/j.envpol.2014.03.020","article-title":"Spatial and temporal analysis of Air Pollution Index and its timescale-dependent relationship with meteorological factors in Guangzhou, China, 2001\u20132011.","volume":"190","author":"L. Li","year":"2014","journal-title":"Environmental Pollution"},{"issue":"1\u20133","key":"pone.0249563.ref042","doi-asserted-by":"crossref","first-page":"267","DOI":"10.1007\/s10661-007-9865-1","article-title":"Investigating the impacts of some meteorological parameters on air pollution in Balikesir, Turkey.","volume":"140","author":"N. Ilten","year":"2008","journal-title":"Environmental monitoring and assessment"},{"issue":"3","key":"pone.0249563.ref043","doi-asserted-by":"crossref","first-page":"179","DOI":"10.1016\/S0378-7788(96)00992-9","article-title":"Influence of some meteorological factors on air pollution in Trabzon city.","volume":"25","author":"B. Cuhadaroglu","year":"1997","journal-title":"Energy and buildings"},{"issue":"16","key":"pone.0249563.ref044","doi-asserted-by":"crossref","first-page":"2871","DOI":"10.1016\/S1352-2310(01)00071-1","article-title":"Air pollution forecast in cities by an air pollution index highly correlated with meteorological variables.","volume":"35","author":"E. Cogliani","year":"2001","journal-title":"Atmospheric Environment"},{"issue":"7","key":"pone.0249563.ref045","doi-asserted-by":"crossref","first-page":"1277","DOI":"10.1016\/j.scitotenv.2010.12.010","article-title":"Air pollution and meteorological processes in the growing dryland city of Urumqi (Xinjiang, China).","volume":"409","author":"B. Mamtimin","year":"2011","journal-title":"Science of the Total Environment"},{"issue":"6","key":"pone.0249563.ref046","doi-asserted-by":"crossref","first-page":"668","DOI":"10.1007\/s40333-014-0069-6","article-title":"Ambient TSP concentration and dustfall variation in Urumqi, China.","volume":"6","author":"X. Zhang","year":"2014","journal-title":"Journal of Arid Land"},{"issue":"3","key":"pone.0249563.ref047","doi-asserted-by":"crossref","first-page":"1699","DOI":"10.5194\/acp-17-1699-2017","article-title":"Dust deposition and ambient PM&lt;sub&gt;10&lt;\/sub&gt; concentration in northwest China: spatial and temporal variability.","volume":"17","author":"X.-X. Zhang","year":"2017","journal-title":"Atmospheric Chemistry and Physics"},{"issue":"5","key":"pone.0249563.ref048","doi-asserted-by":"crossref","first-page":"686","DOI":"10.1007\/s40333-018-0096-9","article-title":"Characteristics of air pollution events over Hotan Prefecture at the southwestern edge of Taklimakan Desert, China.","volume":"10","author":"J. Li","year":"2018","journal-title":"Journal of Arid Land"},{"issue":"7","key":"pone.0249563.ref049","doi-asserted-by":"crossref","first-page":"1277","DOI":"10.1016\/j.scitotenv.2010.12.010","article-title":"Air pollution and meteorological processes in the growing dryland city of Urumqi (Xinjiang, China).","volume":"409","author":"B. Mamtimin","year":"2011","journal-title":"Sci Total Environ"},{"issue":"Pt A","key":"pone.0249563.ref050","doi-asserted-by":"crossref","first-page":"115907","DOI":"10.1016\/j.envpol.2020.115907","article-title":"Spatio-temporal characteristics of air pollutants over Xinjiang, northwestern China.","volume":"268","author":"D. Rupakheti","year":"2021","journal-title":"Environ Pollut"},{"issue":"4","key":"pone.0249563.ref051","doi-asserted-by":"crossref","first-page":"796","DOI":"10.1093\/nsr\/nwz031","article-title":"Linking atmospheric pollution to cryospheric change in the Third Pole region: current progress and future prospects.","volume":"6","author":"S. Kang","year":"2019","journal-title":"National Science Review"},{"issue":"8","key":"pone.0249563.ref052","doi-asserted-by":"crossref","first-page":"557","DOI":"10.1038\/ngeo583","article-title":"Asian dust transported one full circuit around the globe.","volume":"2","author":"I. Uno","year":"2009","journal-title":"Nature Geoscience"},{"issue":"D16","key":"pone.0249563.ref053","doi-asserted-by":"crossref","first-page":"18317","DOI":"10.1029\/2000JD900788","article-title":"Asian dust events of April 1998.","volume":"106","author":"R.B. Husar","year":"2001","journal-title":"Journal of Geophysical Research: Atmospheres"},{"issue":"8","key":"pone.0249563.ref054","doi-asserted-by":"crossref","first-page":"938","DOI":"10.1016\/j.envsoft.2009.01.004","article-title":"TrajStat: GIS-based software that uses various trajectory statistical analysis methods to identify potential sources from long-term air pollution measurement data.","volume":"24","author":"Y. Wang","year":"2009","journal-title":"Environmental Modelling & Software"},{"issue":"7","key":"pone.0249563.ref055","doi-asserted-by":"crossref","first-page":"4995","DOI":"10.1007\/s11356-013-2445-8","article-title":"Ionic composition of PM 2.5 at urban sites of northern Greece: secondary inorganic aerosol formation.","volume":"21","author":"D. Voutsa","year":"2014","journal-title":"Environmental Science and Pollution Research"},{"key":"pone.0249563.ref056","doi-asserted-by":"crossref","first-page":"1319","DOI":"10.1016\/j.jclepro.2015.04.054","article-title":"Comparative analysis of chemical composition and sources of aerosol particles in urban Beijing during clear, hazy, and dusty days using single particle aerosol mass spectrometry.","volume":"112","author":"L. Ma","year":"2016","journal-title":"Journal of Cleaner Production"},{"issue":"1","key":"pone.0249563.ref057","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1016\/j.atmosres.2006.10.003","article-title":"Assessment of potential long-range transport of particulate air pollution using trajectory modeling and monitoring data.","volume":"85","author":"P. Pongkiatkul","year":"2007","journal-title":"Atmospheric Research"},{"key":"pone.0249563.ref058","doi-asserted-by":"crossref","first-page":"72","DOI":"10.1016\/j.jhazmat.2013.07.017","article-title":"Tracking hazardous air pollutants from a refinery fire by applying on-line and off-line air monitoring and back trajectory modeling.","volume":"261","author":"R.-H. Shie","year":"2013","journal-title":"Journal of hazardous materials"},{"key":"pone.0249563.ref059","doi-asserted-by":"crossref","first-page":"136194","DOI":"10.1016\/j.scitotenv.2019.136194","article-title":"The characteristics of air pollution induced by the quasi-stationary front: Formation processes and influencing factors.","volume":"707","author":"X. Wu","year":"2020","journal-title":"Science of The Total Environment"},{"issue":"9","key":"pone.0249563.ref060","doi-asserted-by":"crossref","first-page":"2023","DOI":"10.1016\/j.atmosenv.2007.12.002","article-title":"Mechanism of formation of the heaviest pollution episode ever recorded in the Yangtze River Delta, China.","volume":"42","author":"Q. Fu","year":"2008","journal-title":"Atmospheric Environment"},{"issue":"06","key":"pone.0249563.ref061","first-page":"123","article-title":"Analysis on Seasonal Differences of Pollution Characteristics and Potential Sources of PM2.5 of Zhenjiang.","volume":"37","author":"Q. Jian","year":"2019","journal-title":"Environmental Engineering"}],"container-title":["PLOS ONE"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/dx.plos.org\/10.1371\/journal.pone.0249563","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,4,20]],"date-time":"2021-04-20T20:29:09Z","timestamp":1618950549000},"score":1,"resource":{"primary":{"URL":"https:\/\/dx.plos.org\/10.1371\/journal.pone.0249563"}},"subtitle":[],"editor":[{"given":"Juan A.","family":"A\u00f1el","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"editor"}]}],"short-title":[],"issued":{"date-parts":[[2021,4,20]]},"references-count":61,"journal-issue":{"issue":"4","published-online":{"date-parts":[[2021,4,20]]}},"URL":"https:\/\/doi.org\/10.1371\/journal.pone.0249563","relation":{},"ISSN":["1932-6203"],"issn-type":[{"value":"1932-6203","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,4,20]]}}}