Geochemical associations and availability of cadmium (Cd) in a paddy field system, northwestern Thailand

Kosolsaksakul, Peerapat; Farmer, John G.; Oliver, Ian W.; Graham, Margaret C.

doi:10.1016/j.envpol.2014.01.006

Cited by 97 publications

(48 citation statements)

References 61 publications

(83 reference statements)

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“…All have limitations and all generate operationally defined fractions (see review by (Bacon and Davidson, 2008), but they are nonetheless useful for identifying easily extractable vs recalcitrant element contents and for comparative purposes. The scheme devised by the Community Bureau of Reference (BCR) (Ure et al, 1993) has been employed extensively to examine metal fractionation in river sediments (Martinez-Santos et al, 2015;Pulford et al, 2009), aquaculture sludges (Nemati et al, 2011), sewage sludge (Scancar et al, 2000), urban soils (Gál et al, 2008;Madrid et al, 2007), agricultural soils (Kosolsaksakul et al, 2014), upland peat soils (Bacon et al, 2006), battlefield soils (Oliver et al, 2008) and in soils were pollution remediation trials (e.g. immobilisation with biochar or by zeolite formation) have been conducted (Belviso et al, 2010;Ippolito et al, 2017), hence it was chosen for this study.…”

Section: Element Fractionation (Bcr Sequential Extraction)mentioning

confidence: 99%

Water treatment residuals as soil amendments: Examining element extractability, soil porewater concentrations and effects on earthworm behaviour and survival

Howells

Lewis

Beard

et al. 2018

Ecotoxicology and Environmental Safety

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Drinking water treatment residuals (WTRs), the by-product of water clarification processes, are routinely disposed of via landfill however there is a growing body of research that demonstrates the material has great potential for beneficial use in environmental applications. Application to agricultural land is one option showing great promise (i.e. a low cost disposal route that provides organic matter input to soils and other potential benefits), however questions remain as to the impact such applications may have on earthworm survival and behaviour and also on the potential effects it may have on soil porewater chemistry. This study examined the leachability of elements within two types of WTRs (one Al- and one Fe- based) from England via 0.001 M CaCl solution, at varying pH, and via the Community Bureau of Reference (BCR) sequential extraction scheme. Earthworm avoidance, survival, growth, reproduction and element concentrations were examined in WTR-amended sandy soils (0%, 5%, 10%, 20% w/w), while soil porewaters were also recovered from experimental units and examined for element concentrations. The results revealed leachable element concentrations to be very low in both types of WTRs tested and so element leaching from these WTRs would be unlikely to pose any threat to ecosystems under typical agricultural soil conditions. However, when the pH was lowered to 4.4 there was a substantial release of Al from the Al-WTRs (382 mg/kg). Soil porewater element concentrations were influenced to some degree by WTR addition, warranting further examination in terms of any potential implications for nutrient supply or limitation. Earthworm avoidance of WTR-amended soil was only observed for Al-WTRs and only at the maximum applied rate (20% w/w), while survival of earthworms was not affected by either WTR type at any application rate. Earthworm growth and reproduction (cocoon production) were not affected at a statistically significant level but this needs further examination over a longer period of exposure. Increased assimilation of Al and Fe into earthworm tissues was observed at some WTR application rates (maximum fresh weight concentrations of 42 mg/kg for Al and 167 mg/kg for Fe), but these were not at levels likely to pose environmental concerns.

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Section: Element Fractionation (Bcr Sequential Extraction)mentioning

confidence: 99%

Water treatment residuals as soil amendments: Examining element extractability, soil porewater concentrations and effects on earthworm behaviour and survival

Howells

Lewis

Beard

et al. 2018

Ecotoxicology and Environmental Safety

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“…The International Water Management Institute (IWMI) investigated 524 paddy soils in Thailand and found that Cd concentrations were 0.5-284 mg/kg (Simmons et al 2005). Kosolsaksakul et al (2014) stated that paddy fields were severely contaminated by zinc ore extraction in the Mae Tao watershed of northwest Thailand, and Cd contents there ranged from 2.5-87.6 mg/kg. Nevertheless, Cd background concentrations in Thai soils were only 0.002-0.14 mg/kg (Pongsakul and Attajarusit 1999).…”

Section: Anthropogenic Pollution Sources Analysismentioning

confidence: 99%

Cadmium (Cd) distribution and contamination in Chinese paddy soils on national scale

Liu

Tian

Jiang

et al. 2016

Environ Sci Pollut Res

149

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Rice is a staple food by an increasing number of people in China. As more issues have arisen in China due to rice contaminated by cadmium (Cd), Cd contamination in arable soils has become a severe problem. In China, many studies have examined Cd contamination in arable soils on a national scale, but little studies have focused on the distribution of Cd in paddy fields. This study explored the spatial pattern of Cd in paddy soils in China, made a preliminary evaluation of the potential risk, and identified the most critically contaminated regions based on the domestic rough rice trade flow. The results showed that Cd concentrations in paddy soils in China ranged from 0.01 to 5.50 mg/kg, with a median value of 0.23 mg/kg. On average, the highest Cd concentrations were in Hunan (0.73 mg/kg), Guangxi (0.70 mg/kg), and Sichuan (0.46 mg/ kg) provinces. Cd concentrations in paddy soils in central and western regions were higher than those in eastern regions, especially the southeastern coastal regions. Of the administrative regions, Cd standard exceedance rate was 33.2 %, and the heavy pollution rate was 8.6 %. Regarding to Cd of paddy soil, soil environmental quality was better in Northeast China Plain than in Yangtze River Basin and southeastern coastal region. Mining activities were the main anthropogenic pollution source of Cd in Chinese paddy soil. Based on rice trade, more of the Chinese population would be exposed to Cd through intake of rice produced in Hunan province. Certain regions that output rice, especially Hunan province, should be given priority in the management and control of Cd contamination in paddy soil.

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“…Rice (Oryza sativa L.) is a major cereal crop cultivated and consumed worldwide; it is the second most important cereal crop after wheat in terms of area cultivated and consumption rate [9]. Rice growth and development are eminent at all stages for ensuring seedlings development and yield formation.…”

Section: Introductionmentioning

confidence: 99%

Cadmium Uptake and Distribution in Fragrant Rice Genotypes and Related Consequences on Yield and Grain Quality Traits

Kanu

Ashraf

et al. 2017

Journal of Chemistry

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Cadmium (Cd) toxicity has varying consequences on plants growth and development. This research focused on examining the influence of Cd toxicity on fragrant rice genotypes and its consequences on yield, yield related parameters, and grain quality traits. Randomized complete block design comprising five different fragrant rice cultivars (Meixiangzhan 2, Xiangyaxiangzhan, Guixiangzhan, Basmati, and Nongxiang 18) and four Cd levels (0, 50, 100, and 150 mg/kg soil) was used. The results showed that, with increased levels of soil Cd toxicity, Cd uptake in roots and distribution to other organs increased in dose dependent manner. Uptake and accumulation were higher in roots than in shoots with the highest uptake in both roots and shoots observed in Meixiangzhan 2, followed by Nongxiang 18, Basmati, Xiangyaxiangzhan, and Guixiangzhan cultivars. With increased Cd toxicity, yield and yield parameters were affected in all cultivars. Grain quality was also found affected under Cd stress condition. The results suggested that soil Cd toxicity has negative consequences on rice performance and uptake varies among cultivars. Conclusively, Cd toxicity impaired rice yield formation and grain quality by altering yield components (panicles number, spikelet per panicles, and spikelet setting (%)); however, Guixiangzhan variety performed better, while Meixiangzhan 2 performed less in terms of minimum Cd uptake and distribution to grains, yield, and grain quality reduction under Cd stress condition.

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Geochemical associations and availability of cadmium (Cd) in a paddy field system, northwestern Thailand

Cited by 97 publications

References 61 publications

Water treatment residuals as soil amendments: Examining element extractability, soil porewater concentrations and effects on earthworm behaviour and survival

Water treatment residuals as soil amendments: Examining element extractability, soil porewater concentrations and effects on earthworm behaviour and survival

Cadmium (Cd) distribution and contamination in Chinese paddy soils on national scale

Cadmium Uptake and Distribution in Fragrant Rice Genotypes and Related Consequences on Yield and Grain Quality Traits

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