Spatial trend and pollution assessment of total mercury and methylmercury pollution in the Pearl River Delta soil, South China

被引：46

作者：

Chen, Laiguo ^{[1
]}

Xu, Zhencheng ^{[1
]}

Ding, Xiaoyong ^{[1
,2
]}

Zhang, Weidong ^{[2
]}

Huang, Yumei ^{[1
]}

Fan, Ruifang ^{[3
]}

Sun, Jiaren ^{[1
]}

Liu, Ming ^{[1
,3
]}

Qian, Donglin ^{[1
]}

Feng, Yongbin ^{[1
]}

机构：

[1] Minist Environm Protect, SCIES, Ctr Res Urban Environm, Guangzhou 510655, Guangdong, Peoples R China

[2] Chongqing Acad Environm Sci, Chongqing 400020, Peoples R China

[3] S China Normal Univ, Coll Life Sci, Key Lab Ecol & Environm Sci Guangdong Higher Educ, Guangzhou 510631, Guangdong, Peoples R China

来源：

CHEMOSPHERE | 2012年 / 88卷 / 05期

关键词：

Mercury; Methylmercury; Soil; The Pearl River Delta; URBAN SOILS; ENVIRONMENTAL MERCURY; METHYL MERCURY; HEAVY-METALS; CITY; CONTAMINATION; GEOCHEMISTRY; THIOSULFATE; RELEASE; GUIZHOU;

D O I：

10.1016/j.chemosphere.2012.03.041

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Total mercury (THg) and methylmercury (MeHg) were measured in large number of soil samples collected from areas with different types of land use, different depth in the Pearl River Delta (PRO) of South China. THg and MeHg concentrations ranged from 16.7 to 3320 ng g(-1) and 0.01 to 1.34 ng g(-1), respectively. THg levels are highest in the top 0-20 cm soil layer, and decrease from the surface to bottom layer soil. Spatial variation was observed with different types of land use. Urban parks had the highest concentrations and the other areas tended to decrease in the order of residential areas, industrial areas, vegetable fields, cereal fields, and woodlands. Temporal variation was also noted, and two relatively high THg contamination zones located in the northwestern part of the PRO have significantly expanded over the last two decades. Both THg and MeHg concentrations were correlated significantly with soil organic matter (OM), but not with soil pH. THg pollution status was evaluated using two assessment methods. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：612 / 619

页数：8

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