scholarly journals Methods to Quantify Nickel in Soils and Plant Tissues

2015 ◽  
Vol 39 (3) ◽  
pp. 788-793 ◽  
Author(s):  
Bruna Wurr Rodak ◽  
Milton Ferreira de Moraes ◽  
João Augusto Lopes Pascoalino ◽  
Adilson de Oliveira Junior ◽  
Cesar de Castro ◽  
...  
Keyword(s):  
Plant Tissue ◽  
Inductively Coupled Plasma ◽  
Agricultural Soils ◽  
Optical Emission ◽  
Total Content ◽  
Emission Spectrometry ◽  
Natural Soil ◽  
Nickel Concentration ◽  
Plant Tissues ◽  
Tissue Samples

In comparison with other micronutrients, the levels of nickel (Ni) available in soils and plant tissues are very low, making quantification very difficult. The objective of this paper is to present optimized determination methods of Ni availability in soils by extractants and total content in plant tissues for routine commercial laboratory analyses. Samples of natural and agricultural soils were processed and analyzed by Mehlich-1 extraction and by DTPA. To quantify Ni in the plant tissues, samples were digested with nitric acid in a closed system in a microwave oven. The measurement was performed by inductively coupled plasma/optical emission spectrometry (ICP-OES). There was a positive and significant correlation between the levels of available Ni in the soils subjected to Mehlich-1 and DTPA extraction, while for plant tissue samples the Ni levels recovered were high and similar to the reference materials. The availability of Ni in some of the natural soil and plant tissue samples were lower than the limits of quantification. Concentrations of this micronutrient were higher in the soil samples in which Ni had been applied. Nickel concentration differed in the plant parts analyzed, with highest levels in the grains of soybean. The grain, in comparison with the shoot and leaf concentrations, were better correlated with the soil available levels for both extractants. The methods described in this article were efficient in quantifying Ni and can be used for routine laboratory analysis of soils and plant tissues.

Spatial analysis of total content of microelements in the agricultural soils of southern Serbia - GIS study

2020 ◽  
Author(s):  
Jovan Cakić ◽  
Ivan Aleksić ◽  
Jelena Popović-Djordjević ◽  
Jelena Bogosavljević ◽  
Aleksandar Djordjević
Keyword(s):  
Spatial Analysis ◽  
Environmental Protection Agency ◽  
Inductively Coupled Plasma ◽  
Agricultural Soils ◽  
Optical Emission ◽  
Total Content ◽  
Satellite System ◽  
Soil Samples ◽  
Emission Spectrometry ◽  
Gis Technology

<p>The occurrence and availability of microelements in agricultural soils is of great importance for the environment, the quality of food and water, as well as for human health. United States Environmental Protection Agency (USEPA) has been specified elements such as As, Cd, Cr, Cu, Hg, Ni, Pb and Zn as key contaminants. The Geographic Information System (GIS), together with the technologies of the Global Navigation Satellite System (GNSS), made possible for the agricultural fields, parcels, not to be seen in their entirety anymore, but now, greater attention can be paid to optimizing the accuracy and reliability of the location for collecting soil samples, which provides reliable data for obtaining soil and special purpose maps. The data about the content of microelements in agricultural soils in the area of Southern Serbia are scarce.</p><p>The aim of this research was to determine the total content of eleven microelements (As, B, Cd, Cr, Cu, Hg, Mn, Mo, Ni, Pb and Zn) in the agricultural soils of southern Serbia and to create a database using GIS technology with spatial analysis. A total of 150 soil samples at a depth of             0-30 cm were examined. Spatial positioning of soil sampling points was done with a handheld, professional PDA/GNSS Trimble TDC 100 4G (Android 6) device. The database was created in ArcMap 10.1. Concentrations of microelements in the soil were determined by inductively coupled plasma with optical emission spectrometry (ICP-OES).</p><p>The obtained results of analyses showed that in the agricultural soils of southern Serbia (Jablanica and Pčinja District), the content of B and Pb was slightly increased at a depth of 0-30 cm, compared to the maximum allowable concentrations set by the national regulations. Among the studied elements, the lowest total content was measured for Mo and Pb (< 1mg/kg) whereas Mn had the highest total content (> 2000 mg/kg). This can be seen clearly on the special purpose maps provided using GIS technology.</p><p>Keywords: soils, agriculture, microelements, GIS, southern Serbia</p>

scholarly journals Effectiveness of Different Sample Treatments for the Elemental Characterization of Bees and Beehive Products

Molecules ◽  
2020 ◽  
Vol 25 (18) ◽  
pp. 4263
Author(s):  
Maria Luisa Astolfi ◽  
Marcelo Enrique Conti ◽  
Elisabetta Marconi ◽  
Lorenzo Massimi ◽  
Silvia Canepari
Keyword(s):  
Inductively Coupled Plasma ◽  
Multiple Stressors ◽  
Optical Emission ◽  
Total Content ◽  
Water Bath ◽  
Emission Spectrometry ◽  
Inductively Coupled ◽  
Complex Interactions ◽  
Bee Health

Bee health and beehive products’ quality are compromised by complex interactions between multiple stressors, among which toxic elements play an important role. The aim of this study is to optimize and validate sensible and reliable analytical methods for biomonitoring studies and the quality control of beehive products. Four digestion procedures, including two systems (microwave oven and water bath) and different mixture reagents, were evaluated for the determination of the total content of 40 elements in bees and five beehive products (beeswax, honey, pollen, propolis and royal jelly) by using inductively coupled plasma mass and optical emission spectrometry. Method validation was performed by measuring a standard reference material and the recoveries for each selected matrix. The water bath-assisted digestion of bees and beehive products is proposed as a fast alternative to microwave-assisted digestion for all elements in biomonitoring studies. The present study highlights the possible drawbacks that may be encountered during the elemental analysis of these biological matrices and aims to be a valuable aid for the analytical chemist. Total elemental concentrations, determined in commercially available beehive products, are presented.

scholarly journals Preliminary Assessment of Chemical Elements in Sediments and Larvae of Gomphidae (Odonata) from the Blyde River of the Olifants River System, South Africa

2020 ◽  
Vol 17 (21) ◽  
pp. 8135
Author(s):  
Abraham Addo-Bediako ◽  
Karabo Malakane
Keyword(s):  
Inductively Coupled Plasma ◽  
Chemical Elements ◽  
River Sediments ◽  
Optical Emission ◽  
River System ◽  
Body Tissue ◽  
Emission Spectrometry ◽  
Tissue Samples ◽  
Standard Guideline ◽  
Guideline Values

Benthic macroinvertebrates and sediments can act as good indicators of environmental quality. The aim of this study was to assess the accumulation of chemical elements in the Gomphidae (Odonata) collected in the Blyde River. Seven sites were sampled for river sediments assessment and five sites for larvae (naiads) of Gomphidae bioaccumulation analysis. The tissue samples were analysed using inductively coupled plasma optical emission spectrometry (ICP-OES). The results showed high levels of all of the tested elements except Cd in the sediment. The mean concentrations of As, Cu and Cr exceeded the standard guideline values, whereas Pb and Zn were below the standard guideline values. In the insect body tissue, the concentrations of most elements were higher than in the sediments. The elements with the highest concentrations were Mn, Zn, Cu, and As. The bioaccumulation factor (BF) showed a tendency for bioaccumulation for almost all of the selected elements in the insect. The BF value was high for Cu, Mn, Sb, and Zn (BF > 1). The high concentrations of elements in the insect body tissue may pose a risk to fish that consume them, and subsequently to humans when fish from the river are consumed. It is therefore important to monitor the river to reduce pollution to prevent health risks in humans, especially in communities that rely on the river for water and food.

Sign in / Sign up

Export Citation Format

Share Document