Multi-temporal accumulation and risk assessment of available heavy metals in poultry litter fertilized soils from Rio de Janeiro upland region

Comparison of heavy metals contamination and ecological risk between soils enriched with compost and chemical fertilizers in the North of Iran and ecological risk assessment

“…The results of measurement of the concentration of heavy metals in the soil of the studied regions indicated that among the three studied metals (Pb, Zn, and Cd), the mean concentration of Cd in both seasons was higher than the standard value of Iran, China, and the United States (1 mg/kg) (16,22). Cd, which is easily absorbed through the root and creates toxicity in the food chain, is undoubtedly the most important pollutant in agricultural soils and plant products (16). Nevertheless, since the concentration of Cd is not high in the natural soils of the studied regions, Cd contamination in the region cannot be attributed to natural factors, such as the soil and geology of the area or the water used to irrigate agricultural soils.…”

“…The concentration of Pb, Cd, and Zn in each soil sample was measured at specific wavelengths (Pb = 2383.5 nm, Cd = 288.8 nm, and Zn = 13.29 nm) (16,19). To control the quality of the analyses, three blank samples were prepared along with other samples.…”

“…In this study, the natural and manmade background concentrations of Pb, cadmium (Cd), zinc (Zn), copper (Cu), and nickel were 0.23, 34.2, 40.2, 28.3, and 45.7; and 0.23, 54.1, 49.5, 31.6, and 45.8, respectively (15). Parente et al studied heavy metals (Pb, Cd, Cr, Zn, Cu, Mn) concentrations in the soils enriched with poultry fertilizers in Rio de Janeiro upland region and evaluated the potential ecological risks in these soils (16). In another research, Srinivasa Gowd et al evaluated the contamination of heavy metals (Pb, Cr, Zn, Sr) in the soils of Ganga plain, Uttar Pradesh, India.…”

Organic vs conventional agriculture: evaluation of cadmium in two of the most consumed vegetables in Brazil

“…Human exposure to cadmium (Cd), undesirable even in trace concentrations, occurs mainly through food consumption (World Health Organization, 2020). However, there are several sources of food contamination by Cd: deposition of particulate matter with a metal associated with it from pollution caused by industrial and vehicular emissions (Gupta et al, 2019;Kibblewhite, 2018;França et al, 2017); contaminated soil (Yang et al, 2018); irrigation with contaminated water (Ahmed et al, 2019;Islam et al, 2018); use of pesticides or chemical fertilizers during cultivation (Wang et al, 2018;Reboredo et al, 2019;Parente et al, 2019), among others.…”

Mapeamento Da Dinâmica Do Uso Das Terras Da Bacia Do Rio Jaguaripe – Ba

“…A região Oeste de Santa Catarina é caracterizada pela produção em pequenas propriedades com mão de obra familiar, tendo na criação de aves, suínos e pecuária leiteira suas principais atividades econômicas. A produção de aves gera anualmente enorme quantidade de resíduo que precisa de destinação correta, de modo a minimizar os impactos ambientais a curto e longo prazo PARENTE et al, 2019) À medida que a produção nacional de frangos aumenta, maiores quantidades de resíduos, como a cama de aves, são geradas e é notória a necessidade de novas possibilidades de manejo e de destino deste resíduo a fim de minimizar os impactos por ele causado. Nesse sentido, tem-se verificado a necessidade de maiores estudos relacionados com o manejo adequado, principalmente com a qualidade da cama e o destino deste subproduto (FUKAYAMA, 2008).…”