Local Geochemical Baselines Reduce Variation Caused by the Use of Different Conservative Elements in Predicting Cu and Zn Enrichment in Agricultural Soils, Kenya

2021 ◽  
Author(s):  
Kelvin Babu Githaiga ◽  
Samwel Maina Njuguna ◽  
Xue Yan
Keyword(s):  
Agricultural Soils ◽  
Cu And Zn

scholarly journals Assessment of heavy metals in soils of a vineyard region with the use of principal component analysis

2009 ◽  
Vol 66 (3) ◽  
pp. 361-367 ◽  
Author(s):  
Gustavo Souza Valladares ◽  
Otávio Antônio de Camargo ◽  
José Ruy Porto de Carvalho ◽  
Alessandra Maria Cia Silva
Keyword(s):  
Heavy Metals ◽  
Principal Component Analysis ◽  
Agricultural Soils ◽  
Principal Component ◽  
Component Analysis ◽  
Soil Samples ◽  
Metal Concentrations ◽  
Zn Content ◽  
Heavy Metals In Soils ◽  
Cu And Zn

Agricultural management with chemicals may contaminate the soil with heavy metals. The objective of this study was to apply Principal Component Analysis and geoprocessing techniques to identify the origin of the metals Cu, Fe, Mn, Zn, Ni, Pb, Cr and Cd as potential contaminants of agricultural soils. The study was developed in an area of vineyard cultivation in the State of São Paulo, Brazil. Soil samples were collected and GPS located under different uses and coverings. The metal concentrations in the soils were determined using the DTPA method. The Cu and Zn content was considered high in most of the samples, and was larger in the areas cultivated with vineyards that had been under the application of fungicides for several decades. The concentrations of Cu and Zn were correlated. The geoprocessing techniques and the Principal Component Analysis confirmed the enrichment of the soil with Cu and Zn because of the use and management of the vineyards with chemicals in the preceding decades.

Cu and Zn exert a greater influence on antibiotic resistance and its transfer than doxycycline in agricultural soils

2021 ◽  
pp. 127042
Author(s):  
Na Li ◽  
Jianguo Chen ◽  
Chong Liu ◽  
Jiaxun Yang ◽  
Changxiong Zhu ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Agricultural Soils ◽  
Cu And Zn

scholarly journals Copper, nickel and zinc phytoavailability in an oxisol amended with sewage sludge and liming

2003 ◽  
Vol 60 (4) ◽  
pp. 747-754 ◽  
Author(s):  
Adão Luiz Castanheiro Martins ◽  
Ondino Cleante Bataglia ◽  
Otávio Antonio de Camargo
Keyword(s):  
Heavy Metal ◽  
Sewage Sludge ◽  
Inductively Coupled Plasma ◽  
Agricultural Soils ◽  
Heavy Metal Accumulation ◽  
Inductively Coupled ◽  
Long Term Effect ◽  
Set Up ◽  
Sludge Application ◽  
Cu And Zn

Contents of heavy metal on agricultural soils have been raised by land applications of sewage sludge and may constitute a hazard to plants, animals and humans. A field experiment was carried out from 1983 to 1987, to evaluate the long-term effect of sewage sludge application, with and without liming, on heavy metal accumulation and availability in a Rhodic Hapludox soil grown with maize (HMD 7974 hybrid). Trials were set up in a completely randomized blocks design with four replications. Each block was split in two bands, one with and another without liming. The sludge was applied in each band at rates: 0, 20, 40, 60 and 80 Mg ha-1 (dry basis) in a single application; and 40, 60 and 80 Mg ha-1 split in two, three and four equal yearly applications, respectively. The soil was sampled for chemical analysis each year after harvest. Soil samples were analysed for Cu, Ni and Zn in extracts obtained with DTPA and Mehlich-3 solutions, and in extracts obtained by digestion with nitric-perchloric acid (total metal contents), using an inductively coupled plasma (ICP) spectrometer. In general, Zn, Cu and Ni concentrations in DTPA and Mehlich-3 extracts increased linearly with sludge application. Total Cu and Zn concentrations increased when sludge was applied, whereas total Ni concentrations were not affected. Both extractants were suitable to evaluate Cu and Zn availability to corn in the soil treated with sewage sludge. Liming reduced the DTPA extractability of Zn. DTPA-extractable Cu concentrations were not significantly affected by liming. Mehlich-3-extractable Cu and Zn concentrations increased with liming. Only DTPA extractant indicated reduction of Ni concentrations in the soil after liming.

Speciation of Cu and Zn in Drainage Water from Agricultural Soils

2002 ◽  
Vol 36 (22) ◽  
pp. 4824-4830 ◽  
Author(s):  
Annette P. Aldrich ◽  
David Kistler ◽  
Laura Sigg
Keyword(s):  
Agricultural Soils ◽  
Drainage Water ◽  
Cu And Zn

scholarly journals Cd, Cu, and Zn Accumulations Caused by Long-Term Fertilization in Greenhouse Soils and Their Potential Risk Assessment

2019 ◽  
Vol 16 (15) ◽  
pp. 2805 ◽  
Author(s):  
Zhongbin Liao ◽  
Yali Chen ◽  
Jie Ma ◽  
Md. Shafiqul Islam ◽  
Liping Weng ◽  
...  
Keyword(s):  
Management Practices ◽  
Agricultural Soils ◽  
Principal Component ◽  
Greenhouse Production ◽  
Mobility Factor ◽  
Zn Accumulation ◽  
Greenhouse Soils ◽  
Time Required ◽  
Cu And Zn

The intense management practices in greenhouse production may lead to heavy metal (HM) accumulations in soils. To determine the accumulation characteristics of HM and to evaluate possible HM sources in greenhouse soils, thirty typical greenhouse soil samples were collected in Shouguang District, Shandong Province, China. The results indicate that the Cd, Cu, and Zn concentrations are, respectively, 164.8%, 78.6%, and 123.9% higher than their background values. In the study area, Cd exhibits certain characteristics, such as wide variations in the proportion of its exchangeable form and the highest mobility factor and geo-accumulation index, which are indicative of its high bioavailability and environmental risk. In addition, there is a significant positive correlation between pairs of Cd, P, soil organic carbon, and cultivation age. Combined with principal component analysis, the results indicate the clear effects that agricultural activities have on Cd, Cu, and Zn accumulation. However, Cr, Ni, and Pb have a significant correlation with soil Fe and Al (hydr)-oxides, which indicates that these metals mainly originate from parent materials. This research indicated that long-term intensive fertilization (especially the application of chemical fertilizers and livestock manure) leads to Cd, Cu, and Zn accumulation in greenhouse soils in Shouguang. And the time required to reach the maximum permeable limit in agricultural soils for Cd, Cu, and Zn is 23, 51, and 42 years, respectively, based on their current increasing rates.

scholarly journals SPESIASI DAN BIOAVAILABILITAS LOGAM BERAT Cu DAN Zn DALAM TANAH PERTANIAN ORGANIK DAN ANORGANIK

Jurnal Kimia ◽  
2019 ◽  
pp. 213
Author(s):  
N. W. B. S. Devi ◽  
I M. Siaka ◽  
K. G. D. Putra
Keyword(s):  
Heavy Metals ◽  
Agricultural Soils ◽  
Organic Soil ◽  
Organic Soils ◽  
Metal Contents ◽  
Zn Speciation ◽  
Soil Component ◽  
Sequential Extraction Method ◽  
The Impact ◽  
Cu And Zn

Agriculture in Indonesia generaly applies agrochemical to improve the quality and quantity of the products, but the impact is, both lands and their products could be contaminated by pollutans especially heavy metals. This study aimed to determine the total metals, speciation, and bioavailability of Cu and Zn in organic and inorganic agricultural soils in Blahbatuh District, Gianyar Regency. The sequential extraction method was performed to release the bonds of heavy metals in each soil component and the determination of the metal concentration was carried out using AAS. The total metals of Cu and Zn in both organic and inorganic soils indicated that both type of soils were still classified as uncontaminated soils because the metal contents were below the maximum limit allowed. The total contents of Cu and Zn in the organic soil were of 45.3922 mg/kg and 47.7645 mg/kg, respectively, while Cu and Zn in the inorganic soil were 48.9121 mg/kg ??and 49.9474 mg/kg, respectively. Fractination in the organic and inorganic soil EFLE (easly, freely,leachable, and exchangeable), reducible, oxidisable, dan resistant including F4> F3> F2> F1 for Cu and F4> F3> F1> F2 for Zn. The bioavailability of Cu and Zn in the organic soils were 10.52-23.79% and 3.79-7.21% bioavailable, 10.03-25.50% and 14.99-32.68% potentially bioavailable, 38.64-63.19% and 41.20- 60.28% non bioavailable, while in the inorganic soil and were 18.31-32.63% and 4.54-7.85% bioavailable, 9.86-13.85% and 15.26-32.55% potentially bioavailable, and 40.20-59.14% and 42.84-58.26% non bioavailable. Consuquenthy, both types of the agricultural soils would be safe for planting various types of rice.  Keywords: bioavailability, Cu and Zn, speciation, agricultural soil

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