万山汞矿区水稻吸收无机汞及甲基汞影响因素探讨.pdf

2017,36(10):1946-1952
农业环境科学学报
2017年10月
Journal of Agro-environment Science
钟顺清,仇广乐,孟博.万山求矿区水稻吸收无机汞及甲基汞影响因素探讨J农业环境科学学报,2017,36(10):1946-1952
ZHONG Shun-qing QTU Guang-le, MENG Bo. Invest ion of e actors affe ting the absorption of inorganic mercury and methylmercury by rice in the
Wanshan mercury mining area[ J ] Journal ofagro-enwironmenscience, 2017, 36(10): 1946-1952
万山汞矿区水稻吸收无机汞及甲基汞影响因素探讨
钟顺清3,仇广乐2,孟博
(1.传统聚落数字化保护技术湖南省工程实验室,湖南衡阳421002;2.中国科学院地球化学研究所环境地球化学国家重点实验
室,贵阳550002;3.衡阳师范学院城市与旅游学院,溯南衡阳421002)
摘要:为了探讨贵州万山汞矿区土壤等因素对水稻吸收无机汞和甲基汞的影响,通过在万山垢溪、熬寨、四坑和五坑典型区域采
集水稻和土壤样品进行测试,利用相关分析研究了水稻在分蘖期吸收无机汞和甲基汞的影响因素。研究表明水稻根与茎中积累的
无机汞含量和土壤中无机汞含量显著正相关(r=0987和0.786),而叶中无机求含量与土壤pH显著负相关(=-0.645),与土壤中总
硫显著正相关(r=0.621)。水稻根和叶吸收的甲基汞含量与土壤中甲基汞含量显著正相关(r=0.710和0.599),但与土壤中其他参数
没有明显的相关性。垢溪水稻根表铁膜量高于其他区域,根表铁膜吸附无机汞与水稻根吸收无机汞具有显著的正相关关系(=
0.891),而吸附的甲基汞并没有与根中甲基汞存在相关性。因此,在万山汞矿区,土壤中无机汞和甲基汞含量是影响水稻吸收无机
求和甲基汞的关键因素,同时反映出水稻对甲基汞和无机汞的吸收存在不同的路径。
关键词:水稻;汞;万山;甲基汞
中图分类号:S11文献标志码:A文章编号:1672-2043(2017)10-1946-07doi:10.11654jaes.2017-0489
Investigation of the factors affecting the absorption of inorganic mercury and methylmercury by rice in the
Wanshan mercury mining area
HONG Shun-qing,QIU Guang-le, MENG Bo
(1. Hunan Provincial Engineering I aboratory for Technology of Traditional Set lements Digitalization, Hengyang 42 1002, China 2. State Key
aboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China; 3. College of
City and Tourism, Hengyang Normal University, Hengyang 421002, China
Abstract: The health risk caused by the accumulation of mercury(Hg)and methylmercury(Mehg )in rice grain has gained increasing at-
tention. To investigate the factors that affect the uptake of inorganic Hg and Mehg in rice in the Wanshan mercury mine area of Guizhou
Province, rice plant and soil samples were collected at Gou Xi village, Aozhai village, and Sikeng and Wukeng. Using correlation analysi
we investigated the effects of soil factors, such as inorganic Hg and sulfur content, soil ph, total sulfur organic matter, and Mehg, on the ab
sorption of methylmercury and inorganic mercury by rice at the tillering stage. The results showed that the contents of inorganic Hg in the
roots and stem of rice and in soil were posi ivel corla(0.97 and .786 respeively There was a further nc ativecorelation between
inorganic Hg in rice leaves and soil PH value(r=-0645) and a positive corelation between inorganic Hg in leaves and total sulfur in soil
(r=0 .621).A positive correlation was also found between the concentration of Mehg in roots and leaves and that in soil(r=0.710 and
0.599, respectively However, there were no significant correlations with other soil parameters such as total sulfur, inorganic Hg, organic
at er, and PH value. The amount of iron plaque on the roots of rice at Gou Xi was greater than that at the other sites, and there was a posi
收稿日期:2017-04-03录用日期:2017-06-29
作者简介:钟顺清(1973-),男湖南新邵人,教授,博士,主要从事重金属污染物及其生物有效性研究。F-mail:shunqingzhong(@163.com
基金项目:国家自然科学基金项目(41273152);湖南省自然科学基金项目(1412121);传统聚落数字化保护技术湖南省工程实验室开放基金
(C1404)
Project supported: The National Natural Science Foundation of China(4 152) The Natural Science Foundation of Hunan Province, China(14JJ2121)
Open Fund Project of Hunan Provincial Engineeing I ab ratory or Technology of T