A root exudates based approach to assess the long-term phytoavailability of metals in biosolids-amended soils

Koo, Bonjun; Chen, Weiping; Chang, Andrew C.; Page, A. L.; Granato, Thomas C.; Dowdy, R. H.

doi:10.1016/j.envpol.2010.05.018

Cited by 31 publications

(7 citation statements)

References 30 publications

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“…The factors influencing metal(loid) bioavailability in soil include root-induced pH changes, metal binding by root exudates, detoxification of metal(loid)s by phytochelatins, root-induced microbial activities, and root depletion as a consequence of plant uptake [136]. Plant root exudates include a variety of soluble substances such as organic acids which form complexes with metal(loid)s and dissolve the solid phase metal(loid)s in the soil [137].…”

Section: Biological Modification Of Local Soil Environmentsmentioning

confidence: 99%

Role of organic amendments on enhanced bioremediation of heavy metal(loid) contaminated soils

Park

Lamb

Paneerselvam

et al. 2011

Journal of Hazardous Materials

758

265

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Section: Biological Modification Of Local Soil Environmentsmentioning

confidence: 99%

Role of organic amendments on enhanced bioremediation of heavy metal(loid) contaminated soils

Park

Lamb

Paneerselvam

et al. 2011

Journal of Hazardous Materials

758

265

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“…In contrast, PM c commonly come from abrasion processes, including crustal material and vehicle wear products (Minguillón et al 2012;Richard et al 2011). Other sources of PM c include animal feeding operations and handling operations for bulk material, such as grain processing (Cambra-Lopez et al 2010). Primary and secondary aerosols undergo chemical and physical aging processes in the atmosphere that affect the contribution to PM 2.5 and PM c of the different chemical species (Jimenez et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Spatial differences in ambient coarse and fine particles in the Monterrey metropolitan area, Mexico: Implications for source contribution

Mancilla

Hernández‐Paniagua

Mendoza

2019

Journal of the Air & Waste Management Association

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The ambient air of the Monterrey Metropolitan Area (MMA) in Mexico frequently exhibits high levels of PM 10 and PM 2.5. However, no information exists on the chemical composition of coarse particles (PM c = PM 10-PM 2.5). A monitoring campaign was conducted during the summer of 2015, during which 24-hr average PM 10 and PM 2.5 samples were collected using high-volume filter-based instruments to chemically characterize the fine and coarse fractions of the PM. The collected samples were analyzed for anions (Cl-, NO 3-, SO 4 2-), cations (Na + , NH 4 + , K +), organic carbon (OC), elemental carbon (EC), and 35 trace elements (Al to Pb). During the campaign, the average PM 2.5 concentrations did not showed significance differences among sampling sites, whereas the average PM c concentrations did. In addition, the PM c accounted for 75% to 90% of the PM 10 across the MMA. The average contribution of the main chemical species to the total mass indicated that geological material including Ca, Fe, Si, and Al (45%) and sulfates (11%) were the principal components of PM c , whereas sulfates (54%) and organic matter (30%) were the principal components of PM 2.5. The OC-to-EC ratio for PM c ranged from 4.4 to 13, whereas that for PM 2.5 ranged from 3.97 to 6.08. The estimated contribution of Secondary Organic Aerosol (SOA) to the total mass of organic aerosol in PM 2.5 was estimated to be around 70-80%; for PM c , the contribution was lower (20-50%). The enrichment factors (EF) for most of the trace elements exhibited high values for PM 2.5 (EF: 10-1000) and low values for PM c (EF: 1-10). Given the high contribution of crustal elements and the high values of EFs, PM c is heavily influenced by soil resuspension and PM 2.5 by anthropogenic sources. Finally, the airborne particles found in the eastern region of the MMA were chemically distinguishable from those in its western region. Implications: Concentration and chemical composition patterns of fine and coarse particles can vary significantly across the MMA. Public policy solutions have to be built based on these observations. There is clear evidence that the spatial variations in the MMA's coarse fractions are influenced by clearly recognizable primary emission sources, while fine particles exhibit a homogeneous concentration field and a clear spatial pattern of increasing secondary contributions. Important reductions in the coarse fraction can come from primary particles' emission controls; for fine particles, control of gaseous precursors-particularly sulfur-containing species and organic compounds-should be considered.

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“…Some heavy metals are accumulated in roots, leafs, stems, and fruits, while others are well mobile in plants. Kabata-Pendias (2004), Hanč et al (2008), Bidar et al (2009), Koo et al (2010), Padmavathiamma and Li (2010) studied phytoavailability of macro, micro and trace elements. Hejcman et al (2010) described the relationship be-doi: 10.17221/5/2015-SWR tween soil and biomass chemical properties, amount of elements applied, and their uptake on grassland.…”

mentioning

confidence: 99%

Effect of organic fertilizers on soil organic carbon and risk trace elements content in soil under permanent grassland

Karabcová¹,

Pospíšilová²,

Fiala³

et al. 2015

Soil & Water Res.

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Karabcová H., Pospíšilová L., Fiala K., Škarpa P., Bjelková M. (2015): Effect of organic fertilizers on soil organic carbon and risk trace elements content in soil under permanent grassland. Soil & Water Res., 10: 228-235.The effect of different kinds of organic matter inputs on elemental composition, content, and quality of humic substances was studied on permanent grassland during 2008-2013. The experiment included two organic fertilizer types -compost and slurry, both with the range of stocking rates 0.9, 1.4, and 2.0 livestock units (LU)/ha (corresponding to 54, 84, and 120 kg N/ha, respectively), and control without any fertilizer. The soil was sandy-loam, of Cambisol type, with semi natural permanent grassland. Labile forms and total contents of selected trace elements (Co, Cu, Zn, Cd) and macroelements (Ca, Mg, K, P, and N) were measured. Soil organic matter parameters such as total organic carbon (C ox ), humic substances (HS), humic acid (HA), fluvic acid (FA), and labile carbon forms (hot-water extractable carbon (C hws ), cold water extractable carbon (C cws )) were determined. Results showed that the greatest content of P, Ca, Mg, and N in the soil was detected by the CO 2.0 treatment. Furthermore, the positive effect of compost on C ox , C hws , HA, FA, HS, N and macronutrients was observed. The elemental analysis of humic acids showed lower carbon content and higher oxygen content in HA molecule, which indicated young humic acids, with a lower condensation degree. The content and quality of humic substances strongly influenced the total and labile trace elements content in the soil. Additionally, hot water soluble carbon significantly correlated with plant available forms of Zn, Cu, and Cd.

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A root exudates based approach to assess the long-term phytoavailability of metals in biosolids-amended soils

Cited by 31 publications

References 30 publications

Role of organic amendments on enhanced bioremediation of heavy metal(loid) contaminated soils

Role of organic amendments on enhanced bioremediation of heavy metal(loid) contaminated soils

Spatial differences in ambient coarse and fine particles in the Monterrey metropolitan area, Mexico: Implications for source contribution

Effect of organic fertilizers on soil organic carbon and risk trace elements content in soil under permanent grassland

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