J. Braz. Chem. Soc. vol.15 número5

The optimization of the main operational parameters of the SPME procedure (sample pH, temperature and ionic strength) was carried out both for direct (D-SPME) and headspace

Thus, the objective of the present work was to isolate and characterize the phenolic compounds present in acerola and to estimate the amount of anthocyanin pigments found in the

The values of k given in Table 1 showed that the rate of adsorption of dazomet on both adsorbents increased with increasing temperature in aqueous solution at constant

Figure 8 shows the cytotoxicity of free BBAP and inclusion complexes 1:1 and 1:2 acting on J774 cells by multi-endpoint MTT and NR. The

In this work, a matrix solid-phase dispersion extraction method was developed for separation and quantitation of the organophosphorus pesticides parathion-methyl and malathion, and

Solid state structures of KMt.4H 2 O and compound 2 were determined by X-ray diffraction analyses.. The softer

In order to select the sensing membrane which present better working characteristics for flow determination of gibberellate, conventionally shaped electrodes supporting different

This work describes the optimization of a flow injection system with electrochemical detection for the determination of APAP in pharmaceutical formulations, using a 60% ( m / m