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Evaluation of leafy vegetables as bioindicators of gaseous mercury pollution in sewage-irrigated areas
Zheng, Shun-an1,2; Wu, Zeying2,3; Chen, Chun4; Liang, Junfeng1; Huang, Hongkun2; Zheng, Xiangqun1
2018
Source PublicationENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN0944-1344
Volume25Issue:1Pages:413-421
Corresponding AuthorZheng, Xiangqun(xqzheng_aepi@163.com)
AbstractMercury (Hg) can evaporate and enter the plants through the stomata of plant leaves, which will cause a serious threat to local food safety and human health. For the risk assessment, this study aimed to investigate the concentration and accumulation of total gaseous mercury (TGM) in five typical leafy vegetables (Chinese chives (Allium tuberosum Rottler), amaranth (Amaranthus mangostanus L.), rape (Brassica campestris L.), lettuce (Lactuca sativa L.), and spinach (Spinacia oleracea L.)) grown on sewage-irrigated areas in Tianjin, China. The following three sites were chosen to biomonitor Hg pollution: a paddy field receiving sewage irrigation (industrial and urban sewage effluents) for the last 30 years, a vegetable field receiving sewage irrigation for 15 years, and a grass field which did not receive sewage irrigation in history. Results showed that the total Hg levels in the paddy (0.65 mg kg(-1)) and vegetation fields (0.42 mg kg(-1)) were significantly higher than the local background level (0.073 mg kg(-1)) and the China national soil environment quality standard for Hg in grade I (0.30 mg kg(-1)). The TGM levels in ambient air were significantly higher in the paddy (71.3 ng m(-3)) and vegetable fields (39.2 ng m(-3)) relative to the control (9.4 ng m(-3)) and previously reported levels (1.45 ng m(-3)), indicating severe Hg pollution in the atmospheric environment of the sewage-irrigated areas. Furthermore, gaseous mercury was the dominant form of Hg uptake in the leaves or irreversibly bound to leaves. The comparison of Hg uptake levels among the five vegetables showed that the gradient of Hg accumulation followed the order spinach > red amaranth > Chinese chives > rape > lettuce. These results suggest that gaseous Hg exposure in the sewage-irrigated areas is a dominant Hg uptake route in leafy vegetables and may pose a potential threat to agricultural food safety and human health.
KeywordGaseous mercury Sewage-irrigated area Leafy vegetable Soil Biological indicators
DOI10.1007/s11356-017-0438-8
WOS KeywordORYZA-SATIVA-L. ; ATMOSPHERIC MERCURY ; CHLORALKALI PLANT ; INORGANIC MERCURY ; ACCUMULATION ; CHINA ; DEPOSITION ; HG ; METHYLMERCURY ; PATHWAYS
Indexed BySCI
Language英语
Funding ProjectNatural Science Foundation of China[41203084] ; Natural Science Foundation of China[41371463] ; Major Science and Technology Program for Water Pollution Control and Treatment[2015zx07103-007]
Funding OrganizationNatural Science Foundation of China ; Major Science and Technology Program for Water Pollution Control and Treatment
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000419608400043
PublisherSPRINGER HEIDELBERG
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/56869
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZheng, Xiangqun
Affiliation1.Minist Agr, Agroenvironm Protect Inst, Tianjin 300191, Peoples R China
2.Minist Agr, Rural Energy & Environm Agcy, Beijing 100125, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
4.Univ Kentucky, Dept Plant & Soil Sci, Lexington, KY 40546 USA
Recommended Citation
GB/T 7714
Zheng, Shun-an,Wu, Zeying,Chen, Chun,et al. Evaluation of leafy vegetables as bioindicators of gaseous mercury pollution in sewage-irrigated areas[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2018,25(1):413-421.
APA Zheng, Shun-an,Wu, Zeying,Chen, Chun,Liang, Junfeng,Huang, Hongkun,&Zheng, Xiangqun.(2018).Evaluation of leafy vegetables as bioindicators of gaseous mercury pollution in sewage-irrigated areas.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,25(1),413-421.
MLA Zheng, Shun-an,et al."Evaluation of leafy vegetables as bioindicators of gaseous mercury pollution in sewage-irrigated areas".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 25.1(2018):413-421.
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