Publications by authors named "Usa Sukkha"
The primary objective of this research was to investigate the cadmium (Cd) distribution in Pennisetum purpurem (Napier grass) in the presence of 30 mg/L of Cd and different types and concentrations of chelating agents (ethylenediaminetetraacetic acid disodium dihydrate (EDTA), nitrilotriacetic acid (NTA), and EDTA-NTA mixtures). Plant samples were collected every 15 d during a 105-d experimental period. Accumulation of Cd in each part of the plant was determined using atomic absorption spectrometer (AAS), and the distribution of Cd was determined by laser ablation inductively coupled plasma mass spectrometer (LA-ICP-MS) and synchrotron radiation micro X-ray fluorescence (SR-micro-XRF).
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- The study explores how thermal treatment affects the structure and properties of layered alkali metal oxides, specifically KMTiO materials (with M being Ni, Cu, or Zn).
- Thermal treatment at 200 °C above synthesis temperature leads to expansion of interlayer distance and reduction in layer charge density due to the loss of potassium ions and other species.
- The research finds that these changes impact the dielectric properties of the materials, achieving maximum dielectric constants around ε' ∼10 for KZnTiO, with varying dielectric loss values depending on the treatment temperature.