Spatial distribution and temporal variability of arsenic in irrigated rice fields in Bangladesh. 2. Paddy soil

被引:161
作者
Dittmar, Jessica
Voegelin, Andreas [1 ]
Roberts, Linda C.
Hug, Stephan J.
Saha, Ganesh C.
Ali, M. Ashraf
Badruzzaman, A. Borhan M.
Kretzschmar, Ruben
机构
[1] ETH, CHN, Dept Environm Sci, Inst Biogeochem & Pollutant Dynam, CH-8092 Zurich, Switzerland
[2] Swiss Fed Inst Aquat Sci & Technol Eawag, CH-8600 Dubendorf, Switzerland
[3] Bangladesh Univ Engn & Technol, Dept Civil Engn, Dhaka 1000, Bangladesh
关键词
D O I
10.1021/es0702972
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Arsenic-rich groundwater from shallow tube wells is widely used for the irrigation of boro rice in Bangladesh and West Bengal. In the long term this may lead to the accumulation of As in paddy soils and potentially have adverse effects on rice yield and quality. In the companion article in this issue, we have shown that As input into paddy fields with irrigation water is laterally heterogeneous. To assess the potential for As accumulation in soil, we investigated the lateral and vertical distribution of As in rice field soils near Sreenagar (Munshiganj, Bangladesh) and its changes over a 1 year cycle of irrigation and monsoon flooding. At the study site, 18 paddy fields are irrigated with water from a shallow tube well containing 397 +/- 7 mu g L-1 As. The analysis of soil samples collected before irrigation in December 2004 showed that soil As concentrations in paddy fields did not depend on the length of the irrigation channel between well and field inlet. Within individual fields, however, soil As contents decreased with increasing distance to the water inlet, leading to highly variable topsoil As contents (11-35 mg kg(-1), 0-10 cm). Soil As contents after irrigation (May 2005) showed that most As input occurred close to the water inlet and that most As was retained in the top few centimeters of soil. After monsoon flooding (December 2005), topsoil As contents were again close to levels measured before irrigation. Thus, As input during irrigation was at least partly counteracted by As mobilization during monsoon flooding. However, the persisting lateral As distribution suggests net arsenic accumulation over the past 15 years. More pronounced As accumulation may occur in regions with several rice crops per year, less intense monsoon flooding, or different irrigation schemes. The high lateral and vertical heterogeneity of soil As contents must be taken into account in future studies related to As accumulation in paddy soils and potential As transfer into rice.
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页码:5967 / 5972
页数:6
相关论文
共 25 条
[11]  
Kirk G, 2004, BIOGEOCHEMISTRY SUBM, DOI DOI 10.1002/047086303X.CH5
[12]   DITHIONITE- AND OXALATE-EXTRACTABLE FE AND AL AS AIDS IN DIFFERENTIATING VARIOUS CLASSES OF SOILS [J].
MCKEAGUE, JA ;
DAY, DH .
CANADIAN JOURNAL OF SOIL SCIENCE, 1966, 46 (01) :13-&
[13]  
Meharg AA, 2003, ENVIRON SCI TECHNOL, V37, P229, DOI 10.1021/es0259842
[14]  
*MOA, 2005, HDB AGR STAT
[15]   Impact of irrigation with As rich groundwater on soil and crops:: A geochemical case study in West Bengal Delta Plain, India [J].
Norra, S ;
Berner, ZA ;
Agarwala, P ;
Wagner, F ;
Chandrasekharam, D ;
Stüben, D .
APPLIED GEOCHEMISTRY, 2005, 20 (10) :1890-1906
[16]   Arsenic contamination in water, soil, sediment and rice of central India [J].
Patel, KS ;
Shrivas, K ;
Brandt, R ;
Jakubowski, N ;
Corns, W ;
Hoffmann, P .
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH, 2005, 27 (02) :131-145
[17]   Solid-phases and desorption processes of arsenic within Bangladesh sediments [J].
Polizzotto, ML ;
Harvey, CF ;
Li, GC ;
Badruzzman, B ;
Ali, A ;
Newville, M ;
Sutton, S ;
Fendorf, S .
CHEMICAL GEOLOGY, 2006, 228 (1-3) :97-111
[18]   Spatial distribution and temporal variability of arsenic in irrigated rice fields in Bangladesh. 1. Irrigation water [J].
Roberts, Linda C. ;
Hug, Stephan J. ;
Dittmar, Jessica ;
Voegelin, Andreas ;
Saha, Ganesh C. ;
Ali, M. Ashraf ;
Badruzzanian, A. Borhan M. ;
Kretzschniar, Ruben .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2007, 41 (17) :5960-5966
[19]   Dynamics of arsenic in agricultural soils irrigated with arsenic contaminated groundwater in Bangladesh [J].
Saha, Ganesh Chandra ;
Ali, M. Ashraf .
SCIENCE OF THE TOTAL ENVIRONMENT, 2007, 379 (2-3) :180-189
[20]  
Schwertmann U., 2000, IRON OXIDES LAB, DOI DOI 10.1002/9783527613229