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1
artículo
Publicado 2023
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Fertilizers provide essential nutrients for crops, however, they may also inadvertently provide trace elements that in certain concentrations represent a risk to the soil and the food chain. The objective of this research was to determine the concentrations of Cd, Pb, Cu, and Zn in the most common fertilizers used in Peruvian agriculture. Twenty-one products including inorganic, organic mineral, and organic fertilizers were analyzed by microwave plasma atomic emission spectrometry. The results were compared against international standards. The content of the trace elements was variable and related to the type of fertilizer. Phosphorus fertilizers showed higher concentrations of Cd (3.3-42.3 mgkg-1), most of which exceeded the regulatory limits of several countries. In the case of Pb, none of the fertilizers analyzed exceeded the regulatory limits. Chicken manure showed the highest concen...
2
artículo
Knowledge of the aquatic environment, as well as the main sources of contamination, its transport, its transfer and bioaccumulation are necessary for an adequate evaluation of the degree of contamination of the waters of the Rímac River and its effects on hydrobiological resources and human health. The waters of the Rímac River are mainly contaminated by residues from the mining-metallurgical industry, domestic waste from the centers located on its banks, industrial and agricultural waste. Likewise, the growing requirement for drinking water to supply the population of Lima and Callao, for agriculture and energy generation, makes it necessary to carry out studies on the quality of water and its effects on hydrobiological resources and human health.
3
artículo
Knowledge of the aquatic environment, as well as the main sources of contamination, its transport, its transfer and bioaccumulation are necessary for an adequate evaluation of the degree of contamination of the waters of the Rímac River and its effects on hydrobiological resources and human health. The waters of the Rímac River are mainly contaminated by residues from the mining-metallurgical industry, domestic waste from the centers located on its banks, industrial and agricultural waste. Likewise, the growing requirement for drinking water to supply the population of Lima and Callao, for agriculture and energy generation, makes it necessary to carry out studies on the quality of water and its effects on hydrobiological resources and human health.
4
artículo
Publicado 2007
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Trace concentrations of cadmium, copper, lead and zinc were determinated in muscles and internal organs of rock shell (Stramonita T. chocolata), hairy rockcrab (Cancer setosus), Peruvian rock seabass (Paralabrax humeralis), small mussel (Semimytilus algosus), keyhole limpet (Fissurella spp.) and chiton (Chiton spp.) collected in October 2001 from Huarmey bay, Ancash, Peru. The selected organs were liophylized and process according to CEM the USA 1994 and analyzed by atomic absorption spectrophotometry. Lower concentrations of cadmium (0,63 μg/g), copper (1,87 μg/g) and zinc (1,70 μg/g) were observed in P. humeralis muscle, in contrast higher values of zinc (24,16 μg/g) was in T. chocolata and copper (28,0 μg/g) in muscle of Chiton spp. Trace concentrations were within the international standard limits established by some countries (Nauen, 1983).
5
artículo
Publicado 2016
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Meteor cruise M91 was supported by the BMBF projects SOPRAN II and III (FKZ 03F0611A and FKZ 03F662A). We thank the Peruvian authorities for authorising us to conduct the study in their territorial waters. We also would like to thank our Peruvian colleagues from IMARPE (M. Graco, A. Bernal, G. Flores, and V. León) for their logistical support to our work. Sample analysis was funded by the UK Natural Environment Research Council (NERC) through grant NE/H00548X/1 and by the School of Natural Sciences, University of East Anglia. We gratefully acknowledge the NOAA Air Resources Laboratory for the provision of the HYSPLIT transport and dispersion model and the READY website (http://www.arl.noaa.gov/HYSPLIT.php) and two anonymous reviewers for their comments on our manuscript.
6
objeto de conferencia
Publicado 2015
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Bulk aerosol samples collected during cruise M91 of FS Meteor off the coast of Peru in December 2012 were analysed for their soluble trace metal (Fe, Al, Mn, Ti, Zn, V, Ni, Cu, Co, Cd, Pb, Th) and major ion (including NO−3 and NH+4) content. These data are among the first recorded for trace metals in this relatively poorly studied region of the global marine atmosphere. To the north of ∼ 13◦ S, the concentrations of several elements (Fe, Ti, Zn, V, Ni, Pb) appear to be related to distance from the coast. At the south of the transect (∼ 15–16◦ S), elevated concentrations of Fe, Cu, Co and Ni were observed. These may be related to the activities of the large smelting facilities in the south of Peru or northern Chile. Calculated dry deposition fluxes (3370–17 800 and 16–107 nmolm−2d−1 for inorganic nitrogen and soluble Fe respectively) indicated that atmospheric input to...
7
artículo
Publicado 2023
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Trace metals continue to generate environmental pollution problems because of their persistence in the environment, representing a hazard for living organisms. Although recent studies have reported trace metal environmental pollution in soils of some parts of Lima, there is still much about trace metal pollution that needs to be explored. Using feral pigeons (Columba livia) as biomonitor could facilitate rapid assessments of trace metal contamination in cities like Lima. In this study, we determined the concentrations of lead (Pb), cadmium (Cd), zinc (Zn), copper (Cu), molybdenum (Mo), selenium (Se), iron (Fe) and strontium (Sr) in the liver of 21 pigeons from three sites with industrial, urban and rural land-use characteristics. Our results showed that when compared to the rural site, the concentrations of Pb, Zn, Cu, Se, Fe and Sr were significantly higher in both the industrial and ...
8
artículo
Publicado 2023
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The southern rivers of Peru originate in the Andes Mountains and flow in a southwestern direction to the Pacific Ocean through one of the most hyper-arid regions of the world. During each sub-equatorial summer from December to February, rains and snow melt in the Andes increase the streamflow in these rivers, even as they pass through the 100 km arid zone to the ocean. This study quantified seasonal dynamics of 34 trace metal elements (TM) and other constituent concentrations in four southern river basins of Peru (Chili-Quilca, Tambo, Camana-Majes-Colca, and Ocoña) during 2019–2020. Consistent with previous studies, we observed that: (1) the river water in the southern basins had relatively high concentrations of B, As, Fe, Al, Mn, P, Pb and Ni, with As the most ubiquitous toxic TM in all the basins, often detected at concentrations surpassing Peruvian and USEPA regulated concentratio...
9
artículo
Publicado 2021
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The Bolivian tin belt is a metallogenic province in the Eastern Cordillera of the Andes known for its Sn, W, Ag, and base metal deposits. Cassiterite, which is a major constituent in many magmatic-hydrothermal ore deposits from the Bolivian tin belt, can incorporate dozens of elements within its crystal lattice, making it a useful geological tracer mineral and also a potential host of critical elements. New U-Pb dating of cassiterite yields Late Triassic (Kellhuani deposit) and Late Oligocene to earliest Miocene (Viloco, Huanuni, and Llallagua deposits) ages. These ages confirm that Sn mineralization in the Bolivian tin belt occurred at least in two separate events during two major magmatic episodes apparently triggered by mantle upwelling, decompression melting, and basalt production promoting high heat flow into the overlying crust. The composition of studied hydrothermal cassiterite y...
10
artículo
Publicado 2025
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Potentially toxic elements such as cadmium (Cd) in agricultural soils represent a global concern due to their toxicity and potential accumulation in the food chain. However, our understanding of cadmium’s complex sources and the mechanisms controlling its spatial distribution across diverse edaphic and geological contexts remains limited, particularly in underexplored agricultural regions. Our study aimed to assess the total accumulated Cd content in soils under avocado cultivation and its association with edaphic, geochemical, and geomorphological variables. To this end, we considered the total concentrations of other metals and explored their associations to gain a better understanding of Cd’s spatial distribution. We analyzed 26 physicochemical properties, the total concentrations of 22 elements (including heavy and trace metals such as As, Ba, Cr, Cu, Hg, Ni, Pb, Sb, Se, Sr, Tl, ...
11
artículo
Publicado 2023
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Increased human activity in the Antarctic Peninsula combined with accelerated melting of its glaciers highlights the importance of monitoring trace element concentrations. Surface sediment samples were collected around King George Island, Hope Bay and in the Bransfield Strait in February 2020 and were analysed by X-ray fluorescence spectroscopy and inductively coupled plasma mass spectrometry. The methods display a good correlation. Our results show clear distinctions between these regions for selected elements with high local heterogeneities. Hope Bay exhibited lower concentrations of Fe, Mn, Co, V, Zn while most stations in the Bransfield Strait and around King George Island showed moderate to significant enrichment in Cu, As and Cd. Twelve stations presented a moderate ecological risk. The consistency of our values supports a natural rather than anthropogenic origin, possibly related ...
12
artículo
Publicado 2004
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There are strong indications that the Rimac river valley is being contaminated with heavy metals and an excess of trace elements that come from some industrial and mining activities developed along the Rimac river valley. The agricultural products cultivated there in could be suffering the same effect. Nuclear and related analytical techniques will play an important role in the study of pollution by providing information concerning the degree of contamination in some agricultural products cultivated in the valley and consumed by the population of Lima.
13
artículo
Publicado 2021
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This study was economically supported by the Peruvian CONCYTEC-FONDECYT-World Bank project 107-2018-FONDECYT-BM-IADT-AV, the FONCAI-0023-2019 project granted by the Pontificia Universidad Católica del Perú (PUCP) and a Huiracocha Ph. D grant to D.B. granted by the PUCP. Pan American Silver Corp. provided field and logistical support and access to the mine area. Pan American Silver Corp. Morococha staff is most gratefully acknowledged, particularly Julio Zárate and Rubén Diaz. We appreciate the technical support by Xavier Llovet (CCiT-UB) during the acquisition of EPMA data, and by Peter Tollan (ETHZ) during the acquisition of LA-ICP-MS data. We are grateful to Fredrik Sahlström, Max Frenzel, and Editor-in-Chief Franco Pirajno for their constructive comments which significantly improved the manuscript.
14
artículo
Publicado 2019
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Natural recovery and remediation of acid mine drainage (AMD) reduces the generation of acidity and transport of trace elements in the runoff. A natural wetland that receives and remediates AMD from an abandoned copper mine at Parys Mountain (Anglesey, UK) was investigated for better understanding of the remediation mechanisms. Water column concentrations of dissolved Fe and S species, trace metal (loid)s and acidity decreased markedly as the mine drainage stream passed through the wetland. The metal (loid)s were removed from the water column by deposition into the sediment. Fe typically accumulated to higher concentrations in the surface layers of sediment while S and trace metal (loid)s were deposited at higher concentration within deeper (20–50 cm) sediments. High resolution X-ray fluorescence scans of sediment cores taken at three sites along the wetland indicates co–immobilizatio...
15
artículo
Publicado 2008
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Artículo es parte del número especial: Awards Ceremony Speeches and Abstracts of the 18th Annual V.M. Goldschmidt Conference Vancouver, Canada July, 2008.
16
artículo
Publicado 2022
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There is concern about the anthropogenic impact on the Antarctic ecosystem, for this reason the Peruvian Marine Research Institute carried out the Twenty-Fifth and Sixth scientific expeditions of Peru to Antarctica. The investigations were carried out in the austral summer 2018-2019 aboard the BAP Carrasco from the Mackellar Cove located on King George Island, in which samples of water and marine sediment were taken at 11 sampling stations for the evaluation of trace metals (Cu, Zn, As and Pb) by inductively coupled plasma mass spectrometry (ICP-MS). It was observed that the highest concentration levels of Cu, As and Pb in the water matrix corresponded to the year 2019, compared to the year 2018. Also, these metals did not exceed the Environmental Quality Standards (EQS), for which it is considered that there is no risk of water contamination yet. However, there is a trend of increasing ...
17
artículo
Publicado 2023
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The urban agglomeration of Lima and Callao is the second largest city in the world located in a desert, and its supply depends on three small rivers, the Rímac River being the one with the greatest water supply, affected by contamination by mining tailings, sewage and Solid waste. In order to know the climatological and hydrographic conditions that favor the concentration of heavy metals in the water, the relationship between rainfall, water discharges and concentration of aluminum, cadmium, iron and lead in the Rímac River hydrographic system in the period 2018-2021. For which data processing was carried out from six meteorological stations, a water quality monitoring point and four limnimetric stations, through dynamic tables. As a result, it was found that the concentration of heavy metals is higher in the lower basin when rainfall and river level increase in localities of the Alto ...
18
artículo
Publicado 2012
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The constituents of Toquepala and Barroso Groups in southern Peru, according to its composition of major, minor and trace and graphing various geochemical diagrams volcanic rocks show that both groups have a degree of evolution by fractional crystallization, are the series of high-K calc-alkaline, subalkaline and nature. The contents of Sr and Rb indicate a strong assimilation and differentiation of magmas. The enrichment of LILE (<100) and a depletion of elements smaller than 10 elements HFSE negative anomalies of Nb and positive anomalies of Th, Ce, indicate that both groups are related to volcanic tectonic setting of subduction. The chemical contents of Toquepala Group are due to contamination during crustal thickening during the Cretaceous. Volcanic Group of Toquepala are peraluminous nature, and shows a differentiation that mostly covers the area of rhyolite, dacite / andes...
19
artículo
Publicado 2012
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The constituents of Toquepala and Barroso Groups in southern Peru, according to its composition of major, minor and trace and graphing various geochemical diagrams volcanic rocks show that both groups have a degree of evolution by fractional crystallization, are the series of high-K calc-alkaline, subalkaline and nature. The contents of Sr and Rb indicate a strong assimilation and differentiation of magmas. The enrichment of LILE (<100) and a depletion of elements smaller than 10 elements HFSE negative anomalies of Nb and positive anomalies of Th, Ce, indicate that both groups are related to volcanic tectonic setting of subduction. The chemical contents of Toquepala Group are due to contamination during crustal thickening during the Cretaceous. Volcanic Group of Toquepala are peraluminous nature, and shows a differentiation that mostly covers the area of rhyolite, dacite / andes...
20
artículo
Publicado 2015
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Las variedades litológicas predominantes de los dos batolitos son tonalita y granodiorita, provenientes de magmas félsicos. La relación SiO2 vs. Sm/Yb permite determinar que ambos son de la misma edad. Las rocas son de naturaleza subalcalina de las series calcoalcalinas de medio y alto potasio, con un carácter metaluminoso. Los diagramas de discriminación tectonomagmática indican que son granitos de arco volcánico. Los elementos traza y tierras raras también muestran características típicas de rocas asociadas a subducción. La profundidad de la fuente magmática es menor de 20 km y la ausencia de granate indica que no hay contaminación mantélica. Ambos provienen de magmas húmedos, el batolito Las Lomas es del tipo “I” y de la serie de la magnetita, asociado a elementos calcófilos y a la mineralización de Cu-Mo, el batolito Noque del tipo “S” y de la serie de la Ilm...
