Application of α,α'-dipyridyl dye for hydric soil identification
| Autor: | Christine M. VanZomeren, Jacob F. Berkowitz, Lenore M. Vasilas, Steven J Currie |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Chemistry
Inorganic chemistry Soil Science 04 agricultural and veterinary sciences 010501 environmental sciences 01 natural sciences Ferrous Test strips Hydric soil Iron detection Soil water 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Degradation (geology) Reactivity (chemistry) 0105 earth and related environmental sciences Field conditions |
| Zdroj: | Soil Science Society of America Journal. 81:654-658 |
| ISSN: | 0361-5995 |
| DOI: | 10.2136/sssaj2016.12.0431 |
| Popis: | Chemical dyes, including α,α’-dipyridyl, can be used to identify ferrous iron in hydric soil studies and aid in conducting wetland delineations. Indicator test strips containing α,α’-dipyridyl have been developed; however, limited data addresses the reliability of indicator test strips and questions remain regarding potential degradation of α,α’-dipyridyl in liquid and paper formulations. Laboratory studies found ferrous iron detection limits of 0.31 mg L⁻¹ using both liquid and indicator test strips. The liquid dye and indicator test strips displayed similar reactivity in five soils under simulated field conditions. Results suggest that indicator test strips provide a useful tool for ferrous iron detection across a range of soil conditions. Degradation studies indicate that both liquid dye and indicator strips were impacted by light and heat exposure, with a loss of reactivity observed within as few as 3 d under extreme conditions. Maintaining both liquid dye and indicator strips in cool, dark conditions and testing reactivity with laboratory solutions will ensure the reliability of α,α’-dipyridyl results. |
| Databáze: | OpenAIRE |
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