Evaluation of leafy vegetables as bioindicators of gaseous mercury pollution in sewage-irrigated areas

doi:10.1007/s11356-017-0438-8

	Evaluation of leafy vegetables as bioindicators of gaseous mercury pollution in sewage-irrigated areas
	Zheng, Shun-an 1,2; Wu, Zeying 2,3; Chen, Chun 4; Liang, Junfeng 1; Huang, Hongkun 2; Zheng, Xiangqun 1
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2018
卷号	25 期号:1 页码:413-421
关键词	Gaseous mercury Sewage-irrigated area Leafy vegetable Soil Biological indicators
ISSN号	0944-1344
DOI	10.1007/s11356-017-0438-8
通讯作者	Zheng, Xiangqun(xqzheng_aepi@163.com)
英文摘要	Mercury (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.
资助项目	Natural Science Foundation of China[41203084] ; Natural Science Foundation of China[41371463] ; Major Science and Technology Program for Water Pollution Control and Treatment[2015zx07103-007]
WOS关键词	ORYZA-SATIVA-L. ; ATMOSPHERIC MERCURY ; CHLORALKALI PLANT ; INORGANIC MERCURY ; ACCUMULATION ; CHINA ; DEPOSITION ; HG ; METHYLMERCURY ; PATHWAYS
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000419608400043
资助机构	Natural Science Foundation of China ; Major Science and Technology Program for Water Pollution Control and Treatment
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/56868]
专题	中国科学院地理科学与资源研究所
通讯作者	Zheng, Xiangqun
作者单位	1.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
推荐引用方式 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.