引用本文:
矫立萍, 劳齐斌, 孙霞, 张可欣, 卜德志, 陈法锦, 陈立奇, 林红梅, 赵美训. 福建省沿海独立岛屿(东山岛)大气颗粒物中多氯联苯的区域背景[J]. 环境化学, 2018, 37(10): 2199-2206
JIAO Liping, LAO Qibin, SUN Xia, ZHANG Kexin, BU Dezhi, CHEN Fajin, CHEN Liqi, LIN Hongmei, ZHAO Meixun. Regional background of polychlorinated biphenyls in the isolated island (Dongshan Island) of Fujian Province[J]. Environmental Chemistry, 2018, 37(10): 2199-2206

福建省沿海独立岛屿(东山岛)大气颗粒物中多氯联苯的区域背景
矫立萍1,2,3, 劳齐斌2,3,4,5, 孙霞2,3, 张可欣2,3, 卜德志2,3, 陈法锦4, 陈立奇2,3, 林红梅2,3, 赵美训1
1. 海洋化学理论与工程技术教育部重点实验室(中国海洋大学), 海洋国家实验室海洋生态与环境科学功能实验室, 青岛, 266071;
2. 国家海洋局第三海洋研究所, 厦门, 361005;
3. 国家海洋局海洋-大气化学与全球变化重点实验室, 厦门, 361005;
4. 广东海洋大学, 广东省近海海洋变化与灾害预警重点实验室, 湛江, 524088;
5. 国家海洋局 北海海洋环境监测中心站, 北海, 536000
摘要:
为了研究海洋背景区域大气中多氯联苯(PCBs)的污染状况,于冬、春和夏季在福建省沿海岛屿东山岛连续采集大气颗粒物样品.结果显示,东山岛大气颗粒物中PCBs浓度范围为0.11-16.95 pg·m-3,平均值5.53±4.31 pg·m-3.通过对比其他区域发现,东山岛大气颗粒物中PCBs处于较低水平,其含量与海洋背景区域相当.PCBs浓度季节变化明显,表现为冬春季高而夏季低.冬季,PCBs以高氯取代化合物为主,而春、夏季以低氯取代化合物为主.气团来源的季节性变化、气象条件参数(如降雨量、温度、大气压、风速、相对湿度、水气压)是影响PCBs浓度变化的主要因素.东山岛大气颗粒物中PCBs的干沉降通量为1.34 ng·m-2·d-1,冬春季沉降通量明显高于夏季,按照东山岛海域覆盖面积(36200 km2)估算,每年PCBs以干沉降入海通量约为12.84 kg.
关键词:    多氯联苯    大气颗粒物    干沉降通量    气象条件    沿海区域   
Regional background of polychlorinated biphenyls in the isolated island (Dongshan Island) of Fujian Province
JIAO Liping1,2,3, LAO Qibin2,3,4,5, SUN Xia2,3, ZHANG Kexin2,3, BU Dezhi2,3, CHEN Fajin4, CHEN Liqi2,3, LIN Hongmei2,3, ZHAO Meixun1
1. Key Laboratory of Marine Chemistry Theory and Technology(Ocean University of China), Ministry of Education;Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China;
2. Third Institute of Oceanography, State Oceanic Administration(SOA), Xiamen, 361005, China;
3. Key Laboratory of Global Change and Marine-Atmospheric Chemistry of SOA, Xiamen, 361005, China;
4. Guangdong Ocean University, Guangdong Province Key Laboratory for Coastal Ocean Variation and Disaster Prediction, Zhanjiang, 524088, China;
5. Marine Environmental Monitoring Center of Beihai, SOA, Beihai, 536000, China
Abstract:
To investigate the pollution status of polychlorinated biphenyls (PCBs) in the marine background area, atmospheric particulate matter samples were collected from June to August 2006 and January to August 2007 in Dongshan Island, Fujian province. The results showed that the concentrations of ∑28PCBs in the atmospheric particulates of Dongshan Island ranged from 0.11-16.95 pg·m-3, with an average of 5.53 ±4.31 pg·m-3. Compared with other areas, the average concentration of PCBs in Dongshan Island was lower. Higher concentrations of PCBs were observed in the winter and spring whereas lower in the summer. PCBs in atmospheric particles were dominated by higher chlorinated PCBs in winter, while lower chlorinated PCBs were the main component in the spring and summer. The major factors that influence PCBs concentrations were the air mass origins and meteorological parameters (such as rainfall, temperature, atmospheric pressure, wind speed, relative humidity and water vapor pressure). Dry deposition fluxes of PCBs in Dongshan Island were 1.34 ng·m-2·d-1, and the fluxes in the winter and spring were significantly higher than in the summer. According to the coverage area of Dongshan Island (36200 km2), PCBs in atmospheric particles deposition fluxes into the surface waters were 12.84 kg per year.
Key words:    polychlorinated biphenyls (PCBs)    atmospheric particles    dry deposition fluxes    meteorological parameters    coastal area   
收稿日期: 2017-12-17
基金项目: 国家海洋局第三海洋研究所基本科研业务费专项资金项目(海科三2009011,2013012,2013023),国家自然科学基金(41602360),国家社会公益研究专项(2004DIB5J178)和广东海洋大学创新强校项目(GDOU2014050201)资助.
赵美训,Tel:0532-66782103,E-mail:maxzhao@ouc.edu.cn
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