A preliminary study on ultra high frequency electromagnetic fields effect on black locust chlorophylls
| Autor: | Dorina Creanga, Simona Miclaus, Adriana Ispas, D. D. Sandu, I. Creanga, Cristian Goiceanu |
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| Rok vydání: | 2005 |
| Předmět: |
Electromagnetic field
Chlorophyll Chlorophyll a Materials science Time Factors Radiation Tolerance General Biochemistry Genetics and Molecular Biology chemistry.chemical_compound Animal science Electromagnetic Fields Spectrophotometry Botany medicine General Environmental Science medicine.diagnostic_test biology Chlorophyll A Robinia Dose-Response Relationship Radiation Environmental exposure Environmental Exposure Plants biology.organism_classification Dose–response relationship Neurology chemistry Seedling Seeds |
| Zdroj: | Acta biologica Hungarica. 56(1-2) |
| ISSN: | 0236-5383 |
| Popis: | Chlorophylls were quantitatively studied in the leaves of black locust (Robinia pseudoacacia L.) seedlings exposed to electromagnetic fields of high frequency. Exposure system was designed and built up to make possible simultaneous exposure of seedling lots (3 months old) to low power density electromagnetic fields corresponding to a frequency of 400 MHz. After three weeks of daily exposures (1, 2, 3 and 8 hours), chlorophyll levels were measured using adequate spectral device. Statistical analysis of experimental results was performed by means of t-test to identify significant modifications induced by electromagnetic treatment in exposed samples in comparison to the control. Chlorophyll-a as well as chlorophyll-b level was found to decrease except the exposure time of two hours, where a considerable enhancement was noticed. It was revealed that the ratio of the two main types of chlorophyll was decreasing logarithmically to the increase of daily exposure time. |
| Databáze: | OpenAIRE |
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