Objective: To analyze the research status of ground-level ozone pollution, explore research trends and hot spots, and provide references for future research on air pollution. Methods: Papers on ground-level ozone pollution research published before December 31, 2019 had been retrieved in SCI-E database of the "Web of Science Core Collection" in January 2020. The retrieval strategies were set as follows: TS= ( ("Tropospheric Ozone" OR "Low Level Ozone" OR "Ground Level Ozone") AND ("Air pollution*" OR "Air quality") ) . The survey included 2084 articles. By using bibliometric research and visual analysis tools, the research status of global ground-level ozone pollution was revealed from the aspects of time, discipline, journal, financing, institution, country and key words. Results: Cumulative publications increased in a cubic function of y=0.05x(3)+0.80x(2)+0.74x+4.55 (R(2)=0.999, P<0.01) . The most studied subject was Environmental sciences ecology (1401 articles, 67.23%) . Atmospheric Environment was the journal with the most articles (332 articles, 15.93%) . The United States was the country with the most publications (44.67%, 931/2084) , while China ranked second (17.13%, 357/2084) . 80.39% (287/357) of Chinese papers had funding information. Among the top 10 research institutions, 7 and 2 were affiliated to the United States and China respectively. Source apportionment and human health were high frequency keywords that had appeared in the last 5 years. Conclusion: The research on ground-level ozone pollution is in a good period of development. The United States has a leading position in this area, and China has a good prospect in this field. Pollution source apportionment and human health effects are new research directions.
目的： 分析近地面臭氧污染的研究现状，探索研究趋势与方向，为今后空气污染研究提供借鉴。 方法： 于2020年1月，以Web of Science核心合集中科学引文索引（SCI-E）数据库为数据源，以TS=（（"Tropospheric Ozone" OR "Low Level Ozone" OR "Ground Level Ozone"）AND（"Air pollution*" OR "Air quality"））为检索式，对2019年12月31日前发表的关于近地面臭氧污染研究的文献进行检索，共纳入文献2 084篇。运用文献计量学研究和可视化分析工具对全球近地面臭氧污染研究的年代、学科、期刊、资助情况、机构、国家和关键词等进行分析。 结果： 论文累积发表量以y=0.05x(3)+0.80x(2)+0.74x+4.55（R(2)=0.999，P<0.01）的三次函数模式增长；发文量最多的学科是生态环境科学（Environmental sciences ecology），共1 401篇（67.23%）；《大气环境》（Atmospheric Environment）是发文量最多的期刊（332篇，15.93%）；美国是发文量最多的国家（44.67%，931/2 084），中国居于第2位（17.13%，357/2 084），中国有80.39%（287/357）的论文有资助信息；发文量前10位研究机构中，分别有7所和2所隶属于美国和中国；源解析和人类健康等是近5年出现的高频关键词。 结论： 近地面臭氧污染研究呈现良好的发展态势，美国在该领域居于领先地位，中国具有良好的发展前景；污染源解析和人类健康效应研究是新的研究方向。.
Keywords: Air pollution; Bibliometrics; Citespace; Ozone; VOSviewer.