Spectroscopic Investigation of Metal Level in Aloe Vera Plant, and the Soil Where the Aloe Vera Grows: Arba Minch, Southern Ethiopia
Tessema Derbe,
Belete Yilma
Issue:
Volume 3, Issue 1, February 2015
Pages:
1-8
Received:
9 January 2015
Accepted:
21 January 2015
Published:
13 February 2015
Abstract: The main objective of this study was to assess the metals level in Aloe Vera and in the soil where the Aloe Vera plant has grown in three sites, namely; Konso, Welaita and Arba Minch in southern region of Ethiopia using flame atomic absorption spectrometry (FAAS). The results of this study reveal that Aloe Vera plant has the ability to accumulate relatively higher amounts of K and Mn among the determined macro-and micro-elements, respectively. The mean levels of metal in Aloe Vera among three geographical areas in this study could be put in the following order: K (51.880 mg/Kg>> Ca (27.440 mg/Kg) > Mg (7.890 mg/Kg) > Na (2.335 mg/Kg) > Mn (2.083 mg/Kg) > Fe (2.043 mg/Kg) > Ni (2.033 mg/Kg) > Cr (1.670 mg/Kg) > Co (0.947 mg/Kg) > Cu (0.189 mg/Kg). But the metals level in soil are decreased in the order of: Ca (25.110 mg/Kg) > Mg (7.600 mg/Kg) > K (2.764 mg/Kg) > Na (2.330 mg/Kg) > Ni (2.240 mg/Kg) > Fe (2.157 mg/Kg) > Cr (1.700 mg/Kg) > Co (1.650 mg/Kg) > Mn (1.510 mg/Kg) > Cu (0.189 mg/Kg). Hence, the metal level in Aloe Vera are more dominant since plants absorb metal ions from different sources and then hyper-accumulated.
Abstract: The main objective of this study was to assess the metals level in Aloe Vera and in the soil where the Aloe Vera plant has grown in three sites, namely; Konso, Welaita and Arba Minch in southern region of Ethiopia using flame atomic absorption spectrometry (FAAS). The results of this study reveal that Aloe Vera plant has the ability to accumulate r...
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Theoretical Advances in Aromatic Nitration
Francisco Sánchez-Viesca,
Reina Gómez,
Martha Berros
Issue:
Volume 3, Issue 1, February 2015
Pages:
9-13
Received:
16 February 2015
Accepted:
4 March 2015
Published:
14 March 2015
Abstract: In this paper we want to present together our theoretical findings on aromatic nitration, involving both homocyclic and heterocyclic compounds. Our theoretical proposals have been introduced in recent years via several research communications. These theories convey new concepts in Organic Chemistry, such as Electric Hindrance, Autogenic Electromeric Effect, the formation of Precursor Complexes, as well as, short- and long-distance electric interactions in the reactive intermediates. These concepts explain the regiochemistry and the reaction yields, clearing up some obscurities found in Organic Chemistry. Thus, these theoretical considerations are filling gaps in the theory of supposedly well known chemical reactions, improving and updating the Chemical Education.
Abstract: In this paper we want to present together our theoretical findings on aromatic nitration, involving both homocyclic and heterocyclic compounds. Our theoretical proposals have been introduced in recent years via several research communications. These theories convey new concepts in Organic Chemistry, such as Electric Hindrance, Autogenic Electromeri...
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