Publications by authors named "O E Troccoli"
Objective: This study aimed to help six participants with intellectual disability combined with sensory and motor impairments to make verbal requests through the use of a technology system involving cardboard chips and a smartphone.
Method: The participants were divided into two groups of three based on whether they did or did not have visual skills. Each group was exposed to the intervention with the technology system according to a non-concurrent multiple baseline across participants design.
Article Synopsis
- A new approach to controlling sample dispersion in flow systems involves shaking a reactor while the sample moves through, resulting in improved flow patterns.
- Shaking the reactor can boost peak height by up to three times and creates narrower and more Gaussian-shaped peaks compared to static conditions.
- This method allows for enhanced analytical performance by adjusting the oscillation frequency and amplitude, making it useful in various chemical analysis scenarios.
Article Synopsis
- An automatic separation preconcentration system is linked to an electrothermal atomic absorption spectrometer, using a microcolumn filled with a chelating resin for efficient sample preparation.
- The system employs a microcomputer-controlled manifold with solenoid valves to automate processes like conditioning, preconcentration, and washing, completely eliminating manual handling.
- It successfully analyzed cadmium (Cd) and lead (Pb) in sea water from Patagonia, achieving detection limits of 1 and 8 ng l-1, and validated results against certified reference materials.
Article Synopsis
- Cadmium and lead concentrations were measured in common algal species along the southern coasts of Argentina, focusing on two areas: one affected by an industrial city and another known for seaweed harvesting.
- Samples from the harvesting area showed low metal levels, while brown seaweeds from the industrial site displayed noticeable accumulation of lead and cadmium.
- Aluminum analysis revealed significantly high levels in the industrial area, especially in the species Colpomenia sinuosa, although overall cadmium and lead levels were lower than those in other polluted marine areas worldwide.
Arsenic in the inorganic and organic forms was analyzed in species of marine macro-algae growing in the South Atlantic Ocean. Species of the genera Lessonia, Gigartina, Adenocystis, Leathesia and Colpomenia were investigated. Arsenic accumulation was found in all species studied.
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