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Vertical Distribution and Controlling Factors Exploration of Sc, V, Co, Ni, Mo and Ba in Six Soil Profiles of The Mun River Basin, Northeast Thailand
被引:14
|作者:
Zhou, Wenxiang
[1
]
Han, Guilin
[1
]
Liu, Man
[1
]
Song, Chao
[2
]
Li, Xiaoqiang
[1
]
Malem, Fairda
[3
]
机构:
[1] China Univ Geosci, Inst Earth Sci, Beijing 10083, Peoples R China
[2] Chinese Acad Geol Sci, Inst Hydrogeol & Environm Geol, Shijiazhuang 050061, Hebei, Peoples R China
[3] Environm Res & Training Ctr, Dept Environm Qual Promot, Klong 5, Klong Luang 12120, Pathumthani, Peoples R China
基金:
中国国家自然科学基金;
关键词:
soil heavy metals;
enrichment factor;
geoaccumulation index;
Mun River Basin;
Northeast Thailand;
HEAVY-METALS;
ORGANIC-MATTER;
CONTAMINATION;
AREA;
PH;
AVAILABILITY;
GEOCHEMISTRY;
MULTIVARIATE;
MOLYBDENUM;
DESORPTION;
D O I:
10.3390/ijerph17051745
中图分类号:
X [环境科学、安全科学];
学科分类号:
08 ;
0830 ;
摘要:
Exploring the enrichment and controlling factors of heavy metals in soils is essential because heavy metals can cause severe soil contamination and threaten human health when they are excessively enriched in soils. Soil samples (total 103) from six soil profiles (T1 to T6) in the Mun River Basin, Northeast Thailand, were collected for the analyses of the content of heavy metals, including Sc, V, Co, Ni, Mo, Ba. The average contents of soil heavy metals decrease in the following order: Ba, V, Ni, Sc, Co, and Mo (T1, T3, T4 and T5); Ni, V, Ba, Co, Sc, Mo, and Ba (T2); Ba, V, Sc, Ni, Mo, and Co (T6). An enrichment factor (EF) and geoaccumulation index were calculated to assess the degree of heavy metal contamination in the soils. The EFs of these heavy metals in most samples range from 0 to 1.5, which reveals that most heavy metals are slightly enriched. Geoaccumulation indexes show that only the topsoil of T1 and T2 is slightly contaminated by Ba, Sc, Ni, and V. Soil organic carbon (SOC), soil pH and soil texture are significantly positively correlated with most heavy metals, except for a negative correlation between soil pH and Mo content. In conclusion, the influence of heavy metals on soils in the study area is slight and SOC, soil pH, soil texture dominate the behavior of heavy metals.
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页数:14
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