scholarly journals Concentration of Selected Elements in the Hair of Malagasy Girls in Relation to Their Nutritional Status and Environmental Exposure

Author(s):  
Magdalena Zielińska-Dawidziak ◽  
Magdalena Człapka-Matyasik ◽  
Zofia Wojciechowska ◽  
Jędrzej Proch ◽  
Przemysław Niedzielski

Abstract Although the children malnutrition in Madagascar and the environmental pollution of this country has been widely discussed, there is no research on the susceptibility of malnourished Malagasy to toxic elements. Nine elements concentration (Al, As, Cd, Cr, Hg, Ni, Pb, Sn, Sb) was determined in 103 samples of schoolgirls scalp hair (8–15 years old), and in twenty samples of water and soil, from two areas: Antananarivo (UR) and Berevo (RU). Samples were analysed by an inductively coupled plasma-optical emission spectrometer using a microwave-induced nitrogen plasma atomic emission spectrometer. The nutritional status was evaluated by Cole’s Index. The recommended level of Sb was exceeded in the soil samples, while the Al and Ni in the water. Underweight was related to higher accumulation of Al, Cd, Cr, Pb, and Ni in the hair and more common among girls living in RU than UR region (42% vs 28%). . Two-factor analysis of variance showed differences in the Al and Cr content in the girls’ hair depending both on their place of residence and nutritional status. This indicate that the malnourished girls may be more susceptible to soil and water pollution with toxic elements than girls with adequate nutritional status.

2021 ◽  
pp. 1-32
Author(s):  
Magdalena Zielińska-Dawidziak ◽  
Magdalena Czlapka-Matyasik ◽  
Zofia Wojciechowska ◽  
Jędrzej Proch ◽  
Przemysław Niedzielski

Abstract Although the children malnutrition in Madagascar and the environmental pollution of this country has been widely discussed, there is no research on the differences in toxic elements accumulation in human body in dependence on nutritional status of Malagasy. Nine elements concentration (Al, As, Cd, Cr, Hg, Ni, Pb, Sn and Sb) was determined in scalp hair of 103 schoolgirls (8–15 years old), living in two areas: urban - close to Antananarivo (UR) and rural Berevo region (RU). Samples were analyzed by an inductively coupled plasma-optical emission spectrometer. The nutritional status was evaluated by Cole’s Index. Underweight was related to higher accumulation of Al, Cd, and Cr in the hair girls, and more common among girls living in RU than UR region (42% vs 28%). Two-factor analysis of variance showed differences in the Al and Cr content in the girls’ hair depending both on their place of residence and nutritional status. This indicates additional consequence of malnutrition to the girls development and health.


Author(s):  
Magdalena Zielińska-Dawidziak ◽  
Magdalena Czlapka-Matyasik ◽  
Zofia Wojciechowska ◽  
Jędrzej Proch ◽  
Ryszard Kowalski ◽  
...  

Due to undesired influence, the accumulation of rare earth elements (REE) in the human body has been discussed recently. However, it is usually limited to the study of the population living where REE ores and mines are located. The aim of the experiment presented was to analyse the concentration of REE in the hair of children and teenagers living in two areas of Madagascar in relation to the place of residence, nutritional status, age and sex. REE concentration was determined in scalp hair of 262 of subjects (5–19 years old) by an inductively coupled plasma-optical emission spectrometer. The content of total REE in the Malagasy hair was in the range of 0.79–44.15 mg/kg. The nutritional status was evaluated by Cole’s index, and malnutrition of children was observed more often in village areas. The concentration of these elements was also determined in 20 samples for the estimation of environmental exposure. No significant differences were detected in the content of these elements in the studied regions, although the mean value was always higher in soil samples from the Antananariva region. The obtained data suggest dependence between REE concentration in the hair and age, and nutritional status of the examined subjects. Even if the observed correlations are weak, they contribute significant knowledge on the accumulation of REE in the bodies of children living in areas that are not recognised as deposits of these elements.


2000 ◽  
Vol 95 ◽  
pp. 219-238 ◽  
Author(s):  
Efi Karantzali ◽  
Matthew J. Ponting

This paper presents the results of the chemical analyses by inductively coupled plasma atomic emission spectrometry (ICP-AES) of a selection of vases from the recent excavations of Mycenaean tombs at Pylona, Rhodes. The data are used to support and confirm the stylistic attributions of the vases as either local Rhodian products or mainland imports. It is suggested that the majority of the imports are from the Argolid, but that at least one other origin is likely as well. Two distinct compositional groups of ‘local’ pottery are also identified. Comparison is made with the data from the analyses of pottery from Ialysos and the veracity of the conclusions drawn from the earlier optical emission data is confirmed.


2018 ◽  
Author(s):  
Danila Barskiy ◽  
Lucia Ke ◽  
Xingyang Li ◽  
Vincent Stevenson ◽  
Nevin Widarman ◽  
...  

<p>Hyperpolarization techniques based on the use of parahydrogen provide orders of magnitude signal enhancement for magnetic resonance spectroscopy and imaging. The main drawback limiting widespread applicability of parahydrogen-based techniques in biomedicine is the presence of organometallic compounds (the polarization transfer catalysts) in solution with hyperpolarized contrast agents. These catalysts are typically complexes of platinum-group metals and their administration in vivo should be avoided.</p> <p><br></p><p>Herein, we show how extraction of a hyperpolarized compound from an organic phase to an aqueous phase combined with a rapid (less than 10 seconds) Ir-based catalyst capture by metal scavenging agents can produce pure parahydrogen-based hyperpolarized contrast agents as demonstrated by high-resolution nuclear magnetic resonance (NMR) spectroscopy and inductively coupled plasma atomic emission spectroscopy (ICP-AES). The presented methodology enables fast and efficient means of producing pure hyperpolarized aqueous solutions for biomedical and other uses.</p>


2018 ◽  
Author(s):  
Danila Barskiy ◽  
Lucia Ke ◽  
Xingyang Li ◽  
Vincent Stevenson ◽  
Nevin Widarman ◽  
...  

<p>Hyperpolarization techniques based on the use of parahydrogen provide orders of magnitude signal enhancement for magnetic resonance spectroscopy and imaging. The main drawback limiting widespread applicability of parahydrogen-based techniques in biomedicine is the presence of organometallic compounds (the polarization transfer catalysts) in solution with hyperpolarized contrast agents. These catalysts are typically complexes of platinum-group metals and their administration in vivo should be avoided.</p> <p><br></p><p>Herein, we show how extraction of a hyperpolarized compound from an organic phase to an aqueous phase combined with a rapid (less than 10 seconds) Ir-based catalyst capture by metal scavenging agents can produce pure parahydrogen-based hyperpolarized contrast agents as demonstrated by high-resolution nuclear magnetic resonance (NMR) spectroscopy and inductively coupled plasma atomic emission spectroscopy (ICP-AES). The presented methodology enables fast and efficient means of producing pure hyperpolarized aqueous solutions for biomedical and other uses.</p>


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