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1.
Background, aim and scope
The amendment of degraded urban soils using recycled organic wastes offers potential improvements to physicochemical status and functionality, but there is a paucity of knowledge on the potential impact on residual contaminants in soil. The aim of this study was to evaluate the mobility of trace metals and arsenic (As) through an urban soil following amendment with green waste compost over an annual cycle. 相似文献2.
Binoy Sarkar Ravi Naidu Mohammad Mahmudur Rahman Mallavarapu Megharaj Yunfei Xi 《Journal of Soils and Sediments》2012,12(5):704-712
Purpose
Naturally occurring layer silicate clay minerals can be value added by modifying their surface properties to enhance their efficacy in the remediation of environmental contaminants. Silicate clay minerals modified by the introduction of organic molecules into the mineral structure are known as organoclays and show much promise for environmental remediation applications. The present study assesses the extent of decrease in bioavailable and bioaccessible arsenic (As) via enhanced adsorption by soil treated with organoclays. 相似文献3.
Sang-Sun Lim Jin-Hyeob Kwak Sun-Il Lee Dong-Suk Lee Hyun-Jung Park Xiying Hao Woo-Jung Choi 《Journal of Soils and Sediments》2010,10(8):1517-1526
Purpose
To more efficiently utilize composts as N sources while minimizing the environmental impact, it is necessary to understand the effects of compost type on N mobility in compost-amended soil with different characteristics. The objectives of this study are to investigate the effects of livestock manure composts on N leaching from soils and to identify the principal physicochemical variables of the composts that affect N leaching. 相似文献4.
A rapid and simple electrochemical method for evaluating the electron transfer capacities of dissolved organic matter 总被引：3，自引：0，他引：3
Tian Yuan Yong Yuan Shungui Zhou Fangbai Li Zhi Liu Li Zhuang 《Journal of Soils and Sediments》2011,11(3):467-473
Purpose
The evaluation of the electron transfer capacities (ETC) of DOM is important to understand their roles in microbial activity, pollution degradation, and metal mobility. Those currently used methods to quantify ETC, such as Zn and Fe3+ assays, are normally time consuming and usually require experience and skills to achieve reproducible results. The aim of this paper is to develop a rapid and simple approach to accurately and directly quantify the ETC of DOM. 相似文献5.
Ji-Zheng He You-Ting Meng Yuan-Ming Zheng Li-Mei Zhang 《Journal of Soils and Sediments》2010,10(4):767-773
Purpose
Cr(III) oxidation to Cr(VI) significantly increases Cr mobility and toxicity and thus its environmental risks. Manganese (Mn) oxides may serve as the potential oxidants of Cr(III) in environment. Natural Mn oxides in the environment are believed to be derived from bacterial oxidation. The objective of this study was to examine the Cr(III) oxidation capacity of biogenic Mn oxide and the role of Mn-oxidizing bacteria in Cr(III) oxidation. 相似文献6.
Jinghua Fan Zhenli He Lena Q. Ma Peter J. Stoffella 《Journal of Soils and Sediments》2011,11(4):639-648
Purpose
Copper is a trace element of environmental concern. Repeated applications of Cu-containing fungicides have resulted in a large scale of Cu contamination in agricultural soils. However, limited information is available regarding Cu accumulation and availability in soils under citrus production in the Indian River Area, South Florida, which has received increasing amounts of Cu fungicides to control canker and other diseases. The purpose of this study was to investigate Cu transformation, availability, and mobility in soils as affected by external Cu loading and soil properties. 相似文献7.
Ana Romero-Freire Manuel Sierra-Aragón Irene Ortiz-Bernad Francisco J. Martín-Peinado 《Journal of Soils and Sediments》2014,14(5):968-979
Purpose
The present work evaluates the influence of different soil properties and constituents on As solubility in laboratory-contaminated soils, with the aim of assessing the toxicity of this element from the use of bioassays to evaluate the soil leachate toxicity and thereby propose soil guideline values for studies of environmental risk assessment in soil contamination.Materials and methods
Seven soils with contrasting properties were artificially contaminated in laboratory with increasing concentrations of As. Samples were incubated for 4 weeks, and afterwards, soil solution (1:1) was obtained after shaking for 24 h. The soil leachate toxicity was assessed with two commonly used bioassays (seed germination test with Lactuca sativa and Microtox ® test with Vibrio fischeri).Results and discussion
The relationship between soluble As and soil properties indicated that iron oxides and organic matter content were the variables most closely related to the reduction of the As solubility, while pH and CaCO3 increased As solubility in the soil solutions. Toxicity bioassays showed significant differences between soils depending on their properties, with a reduction of the toxicity in the iron-rich soil (no observed effect concentration (NOEC)?=?150 mg kg?1) and a significant increase in the highly carbonate samples (NOEC between 15 and 25 mg kg?1).Conclusions
Soil guideline values for regulatory purposes usually set a single value for large areas (regions or countries) which can produce over- or underestimation of efforts in soil remediation actions. These values should consider different levels according to the main soil properties controlling arsenic mobility and the soil leachate toxicity. 相似文献8.
Biao Huang Mei Wang Lianxiang Yan Weixia Sun Yongcun Zhao Xuezheng Shi David C. Weindorf 《Journal of Soils and Sediments》2011,11(4):607-618
Purpose
Mercury (Hg) accumulation and transfer in soil ecosystems has been altered on local, regional, and even global scales, and their environmental risk has increasingly been a concern to the public and the scientific community. 相似文献9.
Effect of agronomic management on risk of suspended solids and phosphorus losses from soil to waters 总被引：1，自引：1，他引：0
Teresa Borda Luisella Celi Laura Zavattaro Dario Sacco Elisabetta Barberis 《Journal of Soils and Sediments》2011,11(3):440-451
Purpose
Fertilisation may cause an accumulation of phosphorus in soil, which may increase risk of P transfer to waters both in colloidal and dissolved forms. This study evaluated the effect of agronomic management on the potential risk of P losses from soil to water bodies in a long-term experimental platform (NW Italy) subjected for 15 years to different maize-based crops and mineral or organic fertilisation based on nitrogen crop requirements. 相似文献10.
Jihai Zhou Feng Hu Jiaguo Jiao Manqiang Liu Huixin Li 《Journal of Soils and Sediments》2012,12(4):576-585
Purpose
Prometryne with moderate to low mobility in soil is a ubiquitous environmental pollutant in water and soil. Bioremediation is widely used to remove pollutants from contaminated soil. Bacterial-feeding nematodes have been tested on the decomposition of soil organic matter and the release of nutrients through their interaction with soil microorganisms, but little attention has been paid to their effects on the removal of herbicides in soil. In this study, we investigated the effects of bacterial-feeding nematodes (Cephalobus Bastian) on the dissipation of prometryne and microbial activity in prometryne contaminated soil. 相似文献11.
Purpose
Arsenite and arsenate leaching from iron (hydr)oxides is one major parameter affecting the mobility of arsenic in the natural environment. In the process of arsenic transfer to groundwater, the retention capacity of arsenic by different iron (hydr)oxides needs to be investigated. The aim of this study is to determine the retention capacity of arsenite or arsenate from the ferrihydrite, lepidocrocite, or magnetite-coated sand column in the leaching process as well as the influence factors on leaching.Materials and methods
The leaching of arsenite and arsenate from columns loaded with ferrihydrite, magnetite, or lepidocrocite-coated quartz sand was examined, and the influence factors such as pH, phosphate, and humic acid (HA) contents on leaching and retention were also investigated.Results and discussion
The retention performance of As(III) and As(V) depended on the type of iron (hydr)oxides: ferrihydrite?>?magnetite?>?lepidocrocite. The retention capacities of As(III) and As(V) by amorphous ferrihydrite versus magnetite and lepidocrocite are 3.25, 5.63 (As(III)) and 1.75, 3.65 (As(V)) times higher. The retention capacity of arsenic is largely affected by the pH of leaching solutions. The retention of As(III) by ferrihydrite is efficient in near-neutral or slightly acidic environments. The addition of phosphate or HA significantly affected the leaching and retention. The addition of phosphate severely inhibited the leaching and retention of As(III) and As(V) by ferrihydrite, and the inhibitory effect was more obvious along with the increase of phosphate concentration. The retention of As(III) and As(V) by ferrihydrite was significantly enhanced by the addition of low-dose HA but was inhibited by the addition of excessive HA.Conclusions
Retention performance of As(III) and As(V) from a ferrihydrite-coated sand column is greater than a magnetite- or a lepidocrocite-coated sand column, and the influence factors such as pH, phosphate, and HA affect the leaching and retention of As(III) and As(V). The results theoretically underlie the application of iron (hydr)oxide in arsenic pollution control.12.
Coline Druart Maurice Millet Renaud Scheifler Olivier Delhomme Annette de Vaufleury 《Journal of Soils and Sediments》2011,11(8):1373-1384
Purpose
The aim of this work was to assess the transfer and effects of two widely used herbicides on the land snail Helix aspersa during long-term exposure under laboratory conditions. 相似文献13.
María Aurora Armienta Violeta Mugica Isabel Reséndiz Mirella Gutierrez Arzaluz 《Journal of Soils and Sediments》2016,16(4):1267-1278
Purpose
Mining wastes may cause important environmental impacts in soil, water, and air due to their high metals and arsenic contents. The aim of this work was the assessment of the mobility of arsenic and several heavy metals in soils located near different types of tailing heaps in the town of Zimapán, México.Materials and methods
One hundred twenty soil samples were collected nearby to three tailing heaps, one oxidized presenting a red color (RT), and two with gray wastes (OSM and NSM) but with different age, during the dry and rainy seasons at the surface and to 40 cm depth, as well as to different distances from the deposits. Arsenic, Cd, Cu, Fe, Mn, Pb, V, and Zn total concentrations were determined; in addition, geochemical phase distribution of As, Cu, Mn, and Zn in selected samples was determined by sequential extraction. Concentrations were measured by graphite furnace atomic absorption spectrometry and inductively coupled plasma. To interpret the results, statistical analyses were performed.Results and discussion
All samples presented high As concentrations reaching more than 50,000 mg kg?1 close to OSM tailings, although the highest concentrations in the available fractions were measured in NSM impacted soils. Arsenic and metals concentrations exceeded the screening limits recommended for industrial sites. In samples influenced by OSM tailings, most of the elements analyzed were in the residual fraction, whereas in NSM and RT they were mostly in the organic and sulfide fractions and in the Fe and Mn oxides fractions, respectively. Larger concentrations of As and metals than those allowed by the screening values in Canada and the Netherlands were measured in the residential area representing a health threat for the inhabitants and the environment.Conclusions
Acid mine drainage, water, and wind erosion of tailings have polluted nearby soils. Higher concentrations of As and metals were measured during the rainy season in gray tailings impacted soils and during the dry season in red tailings, showing both deposit types’ different mobility. Elements fractionation in soils depends mainly on tailings characteristics. Low metals and As proportions were found in the fraction with the highest mobility. Metals and arsenic are more stable in soils impacted by gray tailings, mainly in the organic and sulfides and residual fractions, while in RT, most are linked to Fe and Mn oxyhydroxides. Polluted soils in residential areas constitute a health hazard. Remedial actions must be taken to stop the population exposure.14.
Mónica B. Alvarez Claudia E. Domini Mariano Garrido Adriana G. Lista Beatriz S. Fernández-Band 《Journal of Soils and Sediments》2011,11(4):657-666
Purpose
The objective of this research was to study heavy metal mobility and availability in sediment samples. A rapid diagnosis about metal behaviour was performed using the combination of several single-step extraction procedures and multi-way chemometric tools. 相似文献15.
Environmental assessment of closed greenhouse vegetable production system in Nanjing, China 总被引：2，自引：0，他引：2
Yong Chen Biao Huang Wenyou Hu David C. Weindorf Lanqin Yang 《Journal of Soils and Sediments》2013,13(8):1418-1429
Purpose
There is growing concern about vegetable safety and environmental contamination resulting from rapid development of greenhouse vegetable production in China.Materials and methods
This paper presents an integrated study of the quality of soils, vegetables, fertilizers, water, and sediments and indicates the characteristics of primary pollutants such as N, P, and some heavy metals in soils using the spatial analysis. Furthermore, sources of soil pollutants were analyzed combining principal component analysis and vertical mobility results. Also the environment risk was evaluated on greenhouse vegetable production activities in a closed greenhouse vegetable production system in Nanjing City, China.Results and discussion
Greenhouse vegetable fields, which applied more fertilizers than greenhouse strawberry fields, had serious accumulations of soil N, P, Cd, Cu, Pb, and Zn, suggested both by principal component analysis and vertical mobility results. This accumulation resulted in high Cd in some vegetables and high concentrations of N and P in irrigation water and groundwater. The result of spatial analysis showed the northwest and north-center regions which featured convenient transportation and irrigation water were the hotspots for pollutant accumulation. Concentrations of pollutants decreased from these regions to the periphery gradually; results further supported by correlation analysis.Conclusions
The environmental management of this kind of production system should pay more attention to supervising and controlling the quality of agriculture inputs and improving the efficiency of fertilizer. Producers should utilize the soil appropriately based upon the environmental risk associated with different media. Finally, soil properties and plant species should be considered in the future when assessing soil environmental quality. 相似文献16.
Hai Huang Yongguan Zhu Zheng Chen Xixiang Yin Guoxin Sun 《Journal of Soils and Sediments》2012,12(3):402-410
Purpose
Little information is available concerning the mobilization and speciation of arsenic (As) in paddy soils during iron plaque decomposition. It is important to investigate these processes since they affect As bioavailability and contaminate surface and ground water systems. 相似文献17.
Gianni Andreottola Luca Bonomo Giorgia De Gioannis Elisa Ferrarese Aldo Muntoni Alessandra Polettini Raffaella Pomi Sabrina Saponaro 《Journal of Soils and Sediments》2010,10(1):142-150
Purpose
The fairly high amounts of sediments dredged in coastal or internal water bodies for navigational and/or environmental purposes claims for the identification of appropriate management strategies. Dredged sediments are frequently affected by organic and inorganic contamination, so that their reuse, as an alternative to final landfill disposal, could need remediation. In this framework, a two-year joint research project was carried out to assess the feasibility of different remediation technologies for the treatment of polluted sediments. 相似文献18.
Forms and profile distribution of soil Fe in the Sanjiang Plain of Northeast China as affected by land uses 总被引：1，自引：0，他引：1
Purpose
Since the mid-1950s, the wetlands in Sanjiang Plain of Northeast China have experienced greater changes in land use under which the mobility of soil Fe could be changed giving definite effects on the biomass production of adjacent regions. The aim of this work was to investigate the effects of land use change on the characteristics of soil Fe vertical distribution with a focus on evaluating the effects of cultivation on the soil Fe mobility in Sanjiang Plain. 相似文献19.
Nadia Kreidie Giovanna Armiento Giannantonio Cibin Gianfelice Cinque Cinzia Crovato Elisa Nardi Renata Pacifico Carlo Cremisini Annibale Mottana 《Journal of Soils and Sediments》2011,11(1):37-52
Purpose
The assessment of risk related to the presence of potentially toxic elements in soils is strictly related to the knowledge of their form and mobility. These relevant properties depend on the complex interactions of the elements of concern with the soil particles that generally cannot be addressed by a single technique. This study presents an integrated approach implementing geochemical and mineralogical investigation techniques on samples from a former mining area (Tolfa Mountains district, northern Latium, Italy), where exploiting activities occurred until the recent past. In particular, the As total concentration and the As distribution in solid phases is studied with the aim to evaluate the possibility of environmental pollution and consequent risks for the health of people living in the area and possibly affected in case of significant mobilization of this toxic element. 相似文献20.