Application of ICP-MS method of determination of 15 elements in honey with chemometric approach for the verification of their authenticity

2011 ◽  
Vol 49 (11) ◽  
pp. 2741-2749 ◽  
Author(s):  
Maria Chudzinska ◽  
Danuta Baralkiewicz
Keyword(s):  
Method Of Determination ◽  
Icp Ms ◽  
Chemometric Approach

scholarly journals Determination of toxic and essential trace elements in serum of healthy and hypothyroid respondents by ICP-MS: A chemometric approach for discrimination of hypothyroidism

2018 ◽  
Vol 48 ◽  
pp. 134-140 ◽  
Author(s):  
Aleksandar Stojsavljević ◽  
Jelena Trifković ◽  
Zorica Rasić-Milutinović ◽  
Dragana Jovanović ◽  
Gradimir Bogdanović ◽  
...  
Keyword(s):  
Trace Elements ◽  
Icp Ms ◽  
Essential Trace Elements ◽  
Chemometric Approach

scholarly journals Examination of distribution of trace elements in hair, fingernails and toenails as alternative biological materials. Application of chemometric methods

2012 ◽  
Vol 10 (5) ◽  
pp. 1590-1599 ◽  
Author(s):  
Agnieszka Przybylowicz ◽  
Paulina Chesy ◽  
Malgorzata Herman ◽  
Andrzej Parczewski ◽  
Stanislaw Walas ◽  
...  
Keyword(s):  
Principal Component Analysis ◽  
Cluster Analysis ◽  
Trace Elements ◽  
Principal Component ◽  
Biological Materials ◽  
Chemometric Methods ◽  
Icp Ms ◽  
Chemometric Approach ◽  
Distribution Of Trace Elements

AbstractThe aim of this study was to find correlations between several studied elements and analyzed materials as well as the application and validation of an analytical method to determine trace elements in hair, fingernails and toenails of healthy volunteers (normal concentration). The method developed covers washing, mineralization and ICP-MS determination of 10 elements (Ca, Cd, Co, Cr, Cu, Fe, Mg, Ni, Pb and Zn) in hair and nails. Concentrations of the selected elements in hair, fingernails and toenails were measured for 24 women and 18 men. Furthermore, a chemometric approach (Principal Component Analysis, PCA) was employed to evaluate the correlations between concentrations of the elements in hair and nails and between these materials. Until now PCA has not been frequently applied in handling and interpretation of the results of analysis of biological materials. However, the results of the present investigation show the high potential of PCA in extraction of valuable information from analytical measurements. Additionally, PCA has become a useful tool for visualization of the obtained results. Moreover, the cluster analysis (CA) was used to group the samples according to gender, taking into account two different groups of elements: essential and toxic.

Development of a method for multielemental determination in water by EDXRF with radioisotopic source of 238Pu.

2019 ◽  
Vol 7 (2A) ◽  
Author(s):  
Camilo Fuentes Serrano ◽  
Juan Reinaldo Estevez Alvares ◽  
Alfredo Montero Alvarez ◽  
Ivan Pupo Gonzales ◽  
Zahily Herrero Fernandez ◽  
...  
Keyword(s):  
Thin Layer ◽  
Expanded Uncertainty ◽  
Considerable Decrease ◽  
X Ray ◽  
Precipitation Efficiency ◽  
Method Of Determination ◽  
Sensitivity Curves ◽  
Order Of Magnitude ◽  
Metrological Parameters

A method for determination of Cr, Fe, Co, Ni, Cu, Zn, Hg and Pb in waters by Energy Dispersive X Ray Fluorescence (EDXRF) was implemented, using a radioisotopic source of 238Pu. For previous concentration was employed a procedure including a coprecipitation step with ammonium pyrrolidinedithiocarbamate (APDC) as quelant agent, the separation of the phases by filtration, the measurement of filter by EDXRF and quantification by a thin layer absolute method. Sensitivity curves for K and L lines were obtained respectively. The sensitivity for most elements was greater by an order of magnitude in the case of measurement with a source of 238Pu instead of 109Cd, which means a considerable decrease in measurement times. The influence of the concentration in the precipitation efficiency was evaluated for each element. In all cases the recoveries are close to 100%, for this reason it can be affirmed that the method of determination of the studied elements is quantitative. Metrological parameters of the method such as trueness, precision, detection limit and uncertainty were calculated. A procedure to calculate the uncertainty of the method was elaborated; the most significant source of uncertainty for the thin layer EDXRF method is associated with the determination of instrumental sensitivities. The error associated with the determination, expressed as expanded uncertainty (in %), varied from 15.4% for low element concentrations (2.5-5 μg/L) to 5.4% for the higher concentration range (20-25 μg/L).

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