Atmospheric accessions of heavy metals to some New Zealand pastoral soils

Gray, C. W.; McLaren, R. G.; Roberts, A. H. C.

doi:10.1016/s0048-9697(02)00404-7

Cited by 127 publications

(46 citation statements)

References 18 publications

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“…2, atmospheric deposition rate of Cd in this field was estimated to be 10.27 g/ha/year (Table 4). This value was generally higher than those previously measured in different sites around the world, such as England and Wales (1.9 g/ha/year, Alloway 1999) and New Zealand (0.20 g/ha/year, Gray et al 2003), while it was comparable to that observed in the ChanC9 area of Varanasi (Indian) suffering with heavy traffic load (22.5 g/ha/year, Sharma et al 2008). Previous studies have also indicated that road traffic emissions were a main source of Cd in atmospheric deposition along the roadside (Sternbeck et al 2002, Legret andPagotto 2006).…”

Section: Resultscontrasting

confidence: 62%

Potential risk of cadmium in a soil-plant system as a result of long-term (10 years) pig manure application

Xu¹,

Yu²,

Ma³

et al. 2015

PLANT SOIL ENVIRON

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Animal manure may be a primary source of cadmium (Cd) to Chinese farmlands because abnormally high values of Cd were observed in various manures. In this study, we evaluated the potential risk of Cd in soil-plant (maize and soybean) system as a result of the long-term (10 years) application of pig manure (PM). During 10 years, the loading rate of Cd through PM application ranged from 26.33-131.50 g/ha/year, while the crops removal rate of Cd was relatively small in comparison to the quantity of Cd supplied by PM application (1.03-4.36 g/ha/year). The PM application significantly increased total Cd concentration in soil. Although the Cd levels did not exceed the Chinese soil quality criteria (1.0 mg/kg dry matter (DM)), it would only take less than two years to reach this limit at high PM application rate. The same trend was also observed for the Cd concentration in maize and soybean. More seriously, Cd concentration in grain of soybean was higher than the threshold values for animal and human ingestion (0.2 mg/kg DM). Based on a mass balance calculation, we found that atmospheric deposition was also an important source of Cd in the experimental area (10.27 g/ha/year). Moreover, the application of PM enhanced the leaching loss of Cd, but they were still fairly small (0.34-0.73 g/ha/year).

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Section: Resultscontrasting

confidence: 62%

Potential risk of cadmium in a soil-plant system as a result of long-term (10 years) pig manure application

Xu¹,

Yu²,

Ma³

et al. 2015

PLANT SOIL ENVIRON

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“…While Pb showed very weak positive correlations with Cu, Cr, Ni and Zn varying from 0.146 to 0.433, a moderate correlation (0.660) was found between Pb and Cd thereby indicating that the source for Pb may be industrial activities apart from the vehicular emissions (Rajaram et al, 2014). Zn showed poor correlation with all other metals except Cu (0.438), which may be due to the influence of traffic activities in these areas (Arslan, 2001;Gray et al, 2003).…”

Section: Correlation Coefficient Analysismentioning

confidence: 95%

Determining heavy metal contamination of road dust in Delhi, India

Suryawanshi

Rajaram

Bhanarkar

et al. 2016

ATM

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RESUMENLa contaminación del aire es considerada como uno de los mayores desafíos ambientales debido a sus efectos sobre los ecosistemas y la salud humana. En este estudio se investigan los niveles de concentración y las fuentes de la contaminación por metales pesados en muestras de polvo de caminos recolectadas en varios sitios que incluyen áreas con cuatro actividades diferentes en Delhi, India: industriales, carreteras, residenciales y de uso mixto. El contenido de metales en polvo de caminos se analizó mediante espectroscopia de emisión atómica por plasma de acoplamiento inductivo. Los resultados muestran altos niveles de concentración de Ni, Cr y Pb en áreas industriales. Los coeficientes de correlación de Pearson acoplados con análisis de componentes principales revelaron que el CD, el Cr, el Ni y el Pb están vinculados con fuentes industriales en tanto que el Zn y el Cu proceden principalmente del tráfico vehicular. La contaminación en polvo de caminos se valoró a través de varios métodos: grado de contaminación, índice ecológico e índice de contaminación. El análisis de los factores de contaminación reveló que las muestras de polvo de caminos estaban contaminadas de manera considerable con Zn y Pb. Los índices de potencial ecológico indicaron la presencia de contaminación significativa por Cd y moderada por Pb en el polvo de camino, en tanto que la contaminación por Cr, Cu, Ni y Zn fue baja. El índice de contaminación de la mayoría de los metales fue mayor a 1, lo cual revela un deterioro en la calidad del polvo de caminos en Delhi a causa de las emisiones antrópicas. El grado de contaminación, el índice de potencia ecológico y el índice integrado de contaminación indican que el polvo de caminos en áreas industriales, de carreteras y de uso mixto exhiben alta contaminación por metales pesados. El polvo del camino también está contaminado de manera significativa. Evaluaciones realizadas por diversos métodos indicaron que todas las técnicas son importantes para valorar la calidad ambiental. ABSTRACTAir pollution has been considered one of the major environmental challenges because of its effect on ecosystems and human health. The concentration levels and sources of heavy metals contamination were studied in road dust samples collected from various locations including four different activity areas: industrial, highways, residential and mixed use in Delhi, India. Metal content in road dust was analyzed by inductively coupled plasma atomic emission spectroscopy. The results showed high concentration levels of Ni, Cr and Pb in industrial areas. Pearson's correlations coupled with principal component analysis revealed that Cd, Cr, Ni and Pb are associated with industrial sources whereas Zn and Cu are mainly contributed by vehicular traffic. Road dust contamination was assessed by various methods: degree of contamination, potential ecological index and pollution index. Contamination factor analysis showed that road dust samples are significantly contaminated by Zn and Pb. The potential ecological indices indicate...

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“…Some elements can accumulate in topsoil to concentrations that are toxic to the plant, to the animal feeding on it, and to humans. Air quality may also be affected by contaminated soils due to the generation of airborne particles and dust [7]. In deeper soils, due to changes in pH and Eh, PTEs may be released into the groundwater, resulting in its contamination [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

The Cancer and Non-Cancer Risk of Santiago Island (Cape Verde) Population due to Potential Toxic Elements Exposure from Soils

Pinto

Silva

et al. 2017

Geosciences

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Abstract:The hazard index (HI) and carcinogenic risk due to the exposure of some potentially toxic elements to the Santiago Island (Cape Verde) population were calculated, considering soil ingestion, inhalation, and dermal contact as exposure pathways. The topsoil of Santiago Island, compared with that of the upper continental crust, is enriched with Co, Cr, Cu, Ni, V, Zn, Mn, and Cd. Hazard indices (HIs) for these metals and the As exposures to the Santiago Island population were calculated, and these calculations were performed for children and adults. For children, HIs were higher than 1 for Co, Cr, and Mn. Therefore, there is an indication of potential non-carcinogenic risk for children, due to the high Co (HI = 2.995), Cr (HI = 1.329), and Mn (HI = 1.126) values in these soils. For the other elements, in adults, there is no potential non-carcinogenic risk. Cancer risk for As, Cd, Cr, and Ni exposures, in adults and children, was calculated, and the results are mainly lower than the carcinogenic target risk of 1 × 10 −6 for As, Cd, and Ni. However, in adults, cancer risk is higher than the carcinogenic target risk for Cr. Regarding As, for children, the fraction due to Risk ingestion represents 51.6%, while Risk inhalation represents 48.0% and Risk dermalcontact represents only 0.4% of the total risk. For adults, Risk inhalation represents 81.3%, Risk ingestion represents 16.6%, and Risk dermal contact represents 2.1%. These results reflect the higher daily ingestion dose for children and the higher inhalation rate and higher dermal contact surface for adults. For the other elements, the cancer risk due to Cr, Ni, and Cd inhalation is always higher for adults than it is for children, reflecting the higher inhalation rate for adults.

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Atmospheric accessions of heavy metals to some New Zealand pastoral soils

Cited by 127 publications

References 18 publications

Potential risk of cadmium in a soil-plant system as a result of long-term (10 years) pig manure application

Potential risk of cadmium in a soil-plant system as a result of long-term (10 years) pig manure application

Determining heavy metal contamination of road dust in Delhi, India

The Cancer and Non-Cancer Risk of Santiago Island (Cape Verde) Population due to Potential Toxic Elements Exposure from Soils

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