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1 3C NMR and ESR Characterization of Humic Substances Isolated from Soils of Two Siberian Arctic Islands
المؤلفون المشاركون
Lodygin, E.
Tomashunas, V.
Abakumov, Evgeny
المصدر
International Journal of Ecology
العدد
المجلد 2015، العدد 2015 (31 ديسمبر/كانون الأول 2015)، ص ص. 1-7، 7ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2015-11-12
دولة النشر
مصر
عدد الصفحات
7
التخصصات الرئيسية
الملخص EN
Humic acids (HAs) and fulvic acids (FAs) of two Polar soils were investigated by 13C NMR and ESR spectroscopies, investigating the degree of humification and the molecular structure.
One soil, from Bolshoi Lyakhovsky Island, contains two humus horizons: modern and buried.
The other soil, from Wrangel Island, had only one modern humus horizon.
The HAs and FAs of the two soils investigated show essential differences.
The HAs show fewer oxygen-containing groups in comparison with the FAs, whereas the degree of aromaticity is two or three times higher in the HAs.
The 13C NMR data also show that HAs are very different from FAs in terms of their molecular composition and hydrophobicity.
Humification in the Arctic is limited by the very low content of lignin-derived compounds, due to the restricted vascular flora.
As a result, the HAs, isolated from Polar soils, are more similar to the corresponding FAs than to the typical HAs of temperate soils.
This was confirmed by ESR data, which show similar levels of free radical concentration for HAs and FAs and are related to the low level of aromaticity of both materials investigated.
Apparently, the humification process in the soils of Polar Arctic deserts is in an initial stage.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Abakumov, Evgeny& Lodygin, E.& Tomashunas, V.. 2015. 1 3C NMR and ESR Characterization of Humic Substances Isolated from Soils of Two Siberian Arctic Islands. International Journal of Ecology،Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1065941
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Abakumov, Evgeny…[et al.]. 1 3C NMR and ESR Characterization of Humic Substances Isolated from Soils of Two Siberian Arctic Islands. International Journal of Ecology No. 2015 (2015), pp.1-7.
https://search.emarefa.net/detail/BIM-1065941
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Abakumov, Evgeny& Lodygin, E.& Tomashunas, V.. 1 3C NMR and ESR Characterization of Humic Substances Isolated from Soils of Two Siberian Arctic Islands. International Journal of Ecology. 2015. Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1065941
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1065941
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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