Fertilizer‐Borne Trace Element Contaminants in Soils

Stacey, Samuel P.; McLaughlin, Michael J.; Hettiarachchi, Ganga M.

doi:10.1002/9781444319477.ch7

Cited by 19 publications

(16 citation statements)

References 109 publications

(135 reference statements)

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“…Therefore, Cd has a hidden toxicity. Cadmium is present in fertilized soils as a divalent cation (Cd 2+ ) and associated with organic (Cd-dissolved organic carbon) and inorganic complexes (Stacey et al, 2010). Observed total metal concentrations were below the regulatory limits given by the European community for agricultural soils.…”

Section: Resultsmentioning

confidence: 95%

Characterization of an Alfisol collected from dry zone of Sri Lanka to elucidate the retention mechanisms of pollutants

et al. 2015

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Characterization of physicochemical properties of a soil enables predicting the behavior of nutrients and pollutants added to the soil. A study was conducted to characterize environmentally important physicochemical properties and processes of an Alfisol (Reddish Brown Earth) collected from the Dry zone of Sri Lanka. Organic carbon content (OC), pH, Electrical Conductivity of soil suspension (EC) and saturated paste (ECe), Cation Exchange Capacity (CEC), and available and total metals (Cu, Zn and Cd) were analyzed. Potentiometric titration and adsorption study were conducted to determine the Point of Zero Charge (PZC) and phosphorus adsorption capacity of the soil. Clay mineralogy of the soil was determined using X-ray diffraction technique. Among the basic soil chemical properties analyzed, CEC (13.2 cmol + kg-1) showed a low cation retention attributed to low organic carbon percentage (mean 0.37 %) and the predominating of lowactivity clay minerals of kaolinite and illite. The EC values (EC=0.03 dS m-1 , ECe=0.3 dS m-1) indicated a low salinity level. Point of zero charge of the soil was 4.0 indicating net negative charges at the existing soil pH of 6.37. At the near neutral pH of the soil, the cation retention enhanced, subsequently affecting the mobility of metals. Phosphorus adsorption data fitted to Langmuir isotherm gave an adsorption maximum of 14285 mg kg-1 indicating a high P fixing ability. The soil properties studied can be used to elucidate the retention mechanisms of pollutants in this soil.

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Section: Resultsmentioning

confidence: 95%

Characterization of an Alfisol collected from dry zone of Sri Lanka to elucidate the retention mechanisms of pollutants

et al. 2015

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“…Soil pH controls the complexation and acid-base reactions of metal species, dissolution and precipitation of metal solid phases, and metal sorption, and generally has a significant negative correlation with the mobility and bioavailability of Cd (Hernandez et al, 2003;Fairbrother et al, 2007). Soil OC is a major contributor to the pH-dependent negative charge in soils, which gives rise to the soil's ability to retain cationic metals (Stacey et al, 2010). Apart from soil pH and OC, soil CEC also play important roles in the retention of heavy metals in soils (Miner et al, 1997).…”

Section: Discussionmentioning

confidence: 99%

Heavy metals in navel orange orchards of Xinfeng County and their transfer from soils to navel oranges

Cheng

Ding

et al. 2015

Ecotoxicology and Environmental Safety

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“…By subdividing the nutrient treated plots into four subplots, we were able to accommodate two wheat cultivars and two sowing dates. (Stacey et al, 2010). Previous field studies have shown that the addition of P fertiliser increases the concentration of Cd in crops whereas P added with animal manure does not (Christensen and Elsgaard, 2014).…”

Section: Discussionmentioning

confidence: 99%

Limitation of multi-elemental fingerprinting of wheat grains: Effect of cultivar, sowing date, and nutrient management

Suarez-Tapia

Kucheryavskiy

Christensen

et al. 2017

Journal of Cereal Science

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Multi-element fingerprinting demonstrates some potential for tracing the origin of agricultural products but not for discriminating among crop cultivars and nutrient management (source, rate). With principal component analysis (PCA) and univariate statistics, we examined 19 elements in grains from two winter wheat cultivars (Hereford, Mariboss) grown with different rates of animal manure (AM) or mineral fertilisers (NPK) in a long-term field experiment and two sowing dates (early, timely). Nitrogen, Cd and Mn related to NPK, and Mo and Na to AM. Barium, Fe, and P reflected nutrient rate; these elements increased with nutrient rate regardless of source. Unmanured grains were enriched in Cu. Mariboss was characterized by higher concentrations of Sr, Ba and Sc compared to Hereford with Sr in grain as the main separator. Univariate statistics showed higher concentrations of N, P, Mg, Ba, Cu, Mo and Zn in early sown than in timely sown wheat. Compared with Hereford grains Mariboss was higher in P, Mg, Ba, Cu and Sr but lower in Mn, Mo and Zn. Thus, confounding effects of cultivar, sowing date, nutrient source and rate limits the potential of multi-element analysis in discriminating among agricultural products from different sites and cropping systems.

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Fertilizer‐Borne Trace Element Contaminants in Soils

Cited by 19 publications

References 109 publications

Characterization of an Alfisol collected from dry zone of Sri Lanka to elucidate the retention mechanisms of pollutants

Characterization of an Alfisol collected from dry zone of Sri Lanka to elucidate the retention mechanisms of pollutants

Heavy metals in navel orange orchards of Xinfeng County and their transfer from soils to navel oranges

Limitation of multi-elemental fingerprinting of wheat grains: Effect of cultivar, sowing date, and nutrient management

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