JBCS

A sample decomposition procedure in digester block using HNO₃, H₂O₂ and H₂SO₄ mixture was optimized by experimental design techniques and multiple response function to determine the mineral composition of almond pulp by Inductively Coupled Plasma Optical Emission Spectrometry (ICP OES).

Liquid-liquid microextraction with low temperature partition (LLE/LTP) and gas chromatography analysis was proposed for the determination of pesticide residues in blood serum samples in a single step, without extract cleaning step.

Iron/carbon-based catalysts obtained from biodiesel residues were prepared by thermal carbonization of the polymer in the presence of iron salt for application in the removal of organic contaminants.

Development and validation of analytical method to quantify auramine dyes in ecotoxicity tests and in surface water samples in environmental levels using HPLC/DAD.

The incorporation of SA in the Fe₃O₄-BSA was confirmed with the fluorescence graph, and the controlled release of SA is shown in the graph of cumulative concentration and mass and the percentage of mass release as function of time.

Alkaline and alkaline-earth metal triorganostannyls are important chemicals in a variety of reactions. They can be employed in the preparation of organotin compounds, as catalysts in the preparation of organic substances or in the preparation of transition metal triorganostannyls.

We chronologically present the total and formal syntheses of lysergic acid, an ergolinic alkaloid that is a precursor of substances with pronounced pharmacological properties, separating them into racemic and chiral/asymmetric syntheses.

The figure represents a schematic sequence for the detection and quantification of silver nanoparticles by mass spectrometry with inductively coupled plasma performed in single particle mode (spICP-MS).

Mixture design: identification of optimal condition.

The image seeks to relate the cognitive operations that emerge form students when carrying out activities in chemistry. From this relationship we seek to categorize in terms of cognitive level of difficult.

The comic strip as an innovative teaching methodology in chemistry higher education.