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Vol. 26, No. 10, October, 2015

ISSN 0103-5053JBCSJournal of the Brazilian Chemical Society

Higher ozone concentrations are observed during weekends in big cities and Rio de Janeiro case is detailed for 2012 and 2013. During weekends the low nitrogen oxide emissions reduce the ozone consumption by this molecule, despite the reduction on the primary pollutant concentrations, which indicated that a reduction in vehicle emissions occurred over the weekends. The weekend effect occurred in all of the three evaluated stations, with greater intensity at the Campo Grande and Irajá stations.. Details are presented in the Article Understanding Ozone Concentrations During Weekdays and Weekends in the Urban Area of the City of Rio de Janeiro by Eduardo M. Martins, Anna C. L. Nunes and Sergio M. Corrêa on page 1967.

Contents

Articles1967 Understanding Ozone Concentrations During Weekdays and

Weekends in the Urban Area of the City of Rio de JaneiroEduardo M. Martins, Anna C. L. Nunes and Sergio M. Corrêa

Graphical AbstractThe lower NO emission during weekends promotes ozone accumulation in

Rio de Janeiro city

J. Braz. Chem. Soc.iv

1981 Determination of Essential, Non-Essential, and Potentially Toxic Elements in Graviola (Annona muricata L.) Pulp by ICP OES and GF AASGislayne A. R. Kelmer, Angerson N. Nascimento and Pedro V. Oliveira

Graphical AbstractEssential, nonessential and potentially toxic elements were determined

in graviola pulp by inductively coupled plasma optical emission spectrometry (ICP OES) and graphite furnace atomic absorption

spectrometry (GF AAS). Graviola can be considered a good source of B, Cu, K, Mg and Mn

1976 Cytotoxic Alkaloids from Hippeastrum solandriflorum Lindl. Kaline R. Carvalho, Alison B. Silva, Maria Conceição M. Torres, Francisco Chagas L. Pinto, Larissa A. Guimarães, Danilo D. Rocha, Edilberto R. Silveira, Letícia V. Costa-Lotufo, Raimundo Braz-Filho and Otília Deusdênia. L. Pessoa

Graphical AbstractOne new homolycorine-type alkaloid, 2a-10ba-dihydroxy-9-O-

demethylhomolycorine, in addition to seven known were isolated from the bulbs of Hippeastrum solandriflorum (Amaryllidaceae). Their

structures were determined by spectrometric methods. Two compounds exhibited significant cytotoxic activity

1988 Determination of Cd, Ni and V in Spices by Solid Sampling High-Resolution Continuum Source Graphite Furnace Atomic Absorption SpectrometryAlex Virgilio, Jardes F. Rêgo, Ariane I. Barros and José A. Gomes Neto

Graphical AbstractA direct solid sampling high-resolution continuum source graphite

furnace atomic absorption spectrometry (HR-CS GF AAS) procedure with calibration using aqueous standards was employed for the determination

of Cd, Ni and V in spices

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1994 Effects of Types of Washing and Peeling in Relation to Pesticide Residues in TomatoesGraziela C. R. M. Andrade, Sérgio H. Monteiro, Jeane G. Francisco, Leila A. Figueiredo, Aderbal A. Rocha and Valdemar L. Tornisielo

Graphical AbstractQuick, easy, cheap, effective, rugged and safe (QuEChERS) was used to determine pesticides in tomato after washing treatments. Liquid chromatography tandem mass spectrometry (LC-MS/MS) in dynamic

multiple-reaction monitoring mode (DMRM) was used for the detection of compounds. Washing and peeling before consumption contributes to

reduce pesticide residues in tomato

2003 Preparation of a Nitrite Electrochemical Sensor Based on Polyaniline/Graphene-Ferrocenecarboxylic Acid Composite Film Modified Glass Carbon Electrode and its Analytical Application Yuli Wei, Fang Fang, Wu Yang, Hao Guo, Xiuli Niu and Lijun Sun

Graphical AbstractA nitrite electrochemical sensor was prepared by depositing polyaniline

(PANI) on graphene (GR) and ferrocenecarboxylic acid (FCA) modified electrode. The modified electrode has a highly catalytic activity for the

oxidation of NO2- and was applied to detect NO2

- sensitively

vVol. 26, No. 10, 2015

2022 Oxidative Stress Parameters, Related Trace Elements Levels and Proteomics in Soybean Seeds in Order to Get a Better Assessment of Their QualityJosefina Cardoso, Ignacio Machado, Juan O. Irigoyen, Marco A. Z. Arruda, Inés Viera, Mariela Pistón and María H. Torre

Graphical AbstractAntioxidant systems, Fe, Cu, Zn, Mn and Ni levels and proteomics in soybean seeds of different performance in field were assessed. Basal

superoxide content and Zn level contribute to predict a possible poor performance in field

2035 Development of a Selective and Sensitive Sensor for Urate Determination Based on Tris(1,10-phenantroline)copper(II) Bis(tetracyanoquinodimethanide) Adsorbed on Carbon NanotubesDilton M. Pimentel, Fernando M. de Oliveira, Wallans T. P. dos Santos, Lauro T. Kubota, Flávio S. Damos and Rita C. S. Luz

Graphical AbstractA new electrode based on carbon nanotube and Cu(phen)2(TCNQ)3 was

developed. The Cu(phen)3(TCNQ)2/CNT modified glassy carbon electrode showed an excellent electrocatalytic activity toward urate oxidation. The

sensor was successfully applied to urate determination in urine samples

2029 Use of an Automatic System in the Preparation of Gas Mixtures for Multivariate Calibration: A Case Study Involving NIR Analysis of Natural GasMayara F. Barbosa, Hebertty V. Dantas, Pablo N. T. Moreira, Roberto K. H. Galvão and Mário C. U. Araújo

Graphical AbstractA multivariate model for near-infrared (NIR) spectrometric analysis of natural gas is developed by using calibration mixtures prepared by an

automatic system

2014 Methyl Salicylate: an Alternative Extraction Solvent for Dispersive-Liquid-Liquid Microextraction of Benzimidazole Fungicides in Water Samples Followed by High-Performance Liquid Chromatographic AnalysisYanawath Santaladchaiyakit, Nattaphorn Phiroonsoontorn, Chuda Sillapatiwat, Kanyavee Kotchalee and Supalax Srijaranai

Graphical AbstractMethyl salicylate has firstly been demonstrated as an alternative extraction solvent for dispersive liquid-liquid microextraction of

benzimidazole fungicides in environmental water samples. The method is simple, rapid, low cost, and reliable for trace analysis of fungicides

SI online

2046 Dispersive Liquid-Liquid Microextraction Based on Solidification of Floating Organic Drop with Central Composite Design for the Determination of Nitrophenols Using High-Performance Liquid ChromatographyBeshare Hashemi, Mojtaba Shamsipur and Ali Barati

Graphical AbstractIn this work, a dispersive liquid-liquid microextraction method based on solidification of organic drop (DLLME-SFO) followed by high performance

liquid chromatography (HPLC) was applied to determine the amount of two nitrophenols in water samples. The effect of the main experimental variables on the extraction procedure was investigated and optimized by

the experimental design method

SI online

J. Braz. Chem. Soc.vi

2063 Sequential Injection Analysis with Square Wave Voltammetry (SI-SWV) Detection for Investigation of Adsorption of Picloram on a Clay SoilLuciana B. O. dos Santos and Jorge C. Masini

Graphical AbstractSequential injection manifold for determination of the free picloram

concentrations employing square wave voltammetry

2077 Development of a Multiresidue Method for Pesticide Analysis in Drinking Water by Solid Phase Extraction and Determination by Gas and Liquid Chromatography with Triple Quadrupole Tandem Mass SpectrometryFilipe F. Donato, Manoel L. Martins, Juliana S. Munaretto, Osmar D. Prestes, Martha B. Adaime and Renato Zanella

Graphical AbstractConsidering the importance of pesticide residues monitoring programs

in drinking water to attend the legislations, reliable methods with high detectability and selectivity are required. A method for the determination

of 70 pesticide residues in drinking water using solid phase extraction (SPE) with polymeric sorbent and gas chromatography coupled to tandem mass spectrometry (GC-MS/MS) and liquid chromatography coupled to tandem

mass spectrometry (LC-MS/MS) was developed and validated

2069 Biomimetic Sensor for Detection of Hydrochlorothiazide Employing Amperometric Detection and Chemometrics for Application in Doping in SportsMayara R. S. Ruy, Eduardo C. Figueira and Maria D. P. T. Sotomayor

Graphical AbstractThe sensor, based on hemin, is a viable alternative for the determination of hydrochlorothiazide in a simple, rapid, selective and sensitive way for

the application in doping and quality control

2054 Chemical Characterization and Optimization of the Extraction Process of Bioactive Compounds from Propolis Produced by Selected Bees Apis melliferaTatiane Luiza Cadorin Oldoni, Sheila C. Oliveira, Suelen Andolfatto, Mariéli Karling, Matheus A. Calegari, Ricardo Y. Sado, Fabiana M. C. Maia, Severino M. Alencar and Vanderlei A. Lima

Graphical AbstractThe extraction process of bioactive compounds from the propolis

produced by selected bees was optimized using a 2³ factorial design and the extract produced in the optimal condition was evaluated determining

its chemical composition and antioxidant activity

2088 Bioactive Cyanopeptides Produced by Sphaerocavum brasiliense Strains (Cyanobacteria)Maria Estela Silva-Stenico, Janaina Rigonato, Adriana Sturion Lorenzi, Maria Teresa Paiva Azevedo, Célia Leite Sant’Anna and Marli Fátima Fiore

Graphical AbstractPhotomicrograph of Sphaerocavum brasiliense colony (scale bar = 20 μm,

400×). Source: Watson A. Gama

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viiVol. 26, No. 10, 2015

2105 Efficient Eco-Friendly Solvent-Free Click Synthesis and Antimicrobial Evaluation of New Fluorinated 1,2,3-Triazoles and their Conversion into Schiff BasesMohamed R. Aouad

Graphical AbstractThis study reports a rapid green click synthesis of novel fluorinated 1,2,3-triazole diesters under solvent-free conditions. The resulting diesters were converted to their corresponding bishydrazones and

evaluated for their antimicrobial activity

2125 Transport Properties of Binary Solutions Containing the Ionic Liquid BMI.BF4 and Ethylene GlycolFernanda T. Silva, Demétrius W. Lima, Márcia R. Becker, Roberto F. Souza and Emilse M. A. Martini

Graphical AbstractIonic conductivity values of binary solutions containing ionic liquid

1-butyl-3-methylimidazolium tetrafluoroborate (BMI.BF4) and ethylene glycol at different concentrations and over a wide temperature range

2116 Total Mercury Determination in Petroleum Green Coke and Oily Sludge Samples by Cold Vapor Atomic Fluorescence Spectrometry Adriana S. Camera, Tatiane A. Maranhão, Fernando J. S. Oliveira, Jessee S. A. Silva and Vera L. A. Frescura

Graphical AbstractPetroleum refining wastes are potential source of Hg and consequently

harmful to environment and humans but it could be an alternative source of energy

2097 Response Surface Methodology Applied in the Study of Emulsion Formulations in the Presence of Leaves of Rosemary (Rosmarinus officinalis L.) as a Source of Natural AntioxidantsThiago Claus, Sylvio V. Palombini, Fabiana Carbonera, Ingrid L. Figueiredo, Makoto Matsushita and Jesuí V. Visentainer

Graphical AbstractRosemary (Rosmarinus officinalis L.) is an excellent source of natural

antioxidants for the emulsion systems. The higher gains in lipid protection were obtained by oil-in-water systems, principally

2130 Use of Biodiesel Press Cake Waste to Prepare Fe/Carbon Reactive Composites for Environmental Applications: Removal of Hazardous CrVI ContaminantsElizângela A. Santos, Paulo F. R. Ortega, Rodrigo L. Lavall, Sérgio C. Reis, José D. Ardisson, Rochel M. Lago, Clésia C. Nascentes and Letícia M. Costa

Graphical AbstractBiodiesel press cake combined with Fe produces reactive composites

supported on carbon to be used in CrVI removal

SI online

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J. Braz. Chem. Soc.viii

2144 Chemical Speciation of Iron in Different Varieties of Beans (Phaseolus vulgaris L.): Cooking EffectsAline P. Oliveira and Juliana Naozuka

Graphical AbstractSimple fractionation procedures allowed the chemical speciation of

Fe and the study of cooking effects on the distribution of Fe-species in seven different varieties of Phaseolus beans. Soluble and inorganic iron

concentration suffered alterations due to cooking

2159 Square-Wave Voltammetric Determination of Paracetamol and Codeine in Pharmaceutical and Human Body Fluid Samples Using a Cathodically Pretreated Boron-Doped Diamond ElectrodeAnderson M. Santos, Fernando C. Vicentini, Patrícia B. Deroco, Romeu C. Rocha-Filho and Orlando Fatibello-Filho

Graphical AbstractA novel electroanalytical method was developed for the simultaneous

determination of paracetamol and codeine in pharmaceutical formulations and human body fluids. The method involves the

combination of square-wave voltammetry with a cathodically pretreated boron-doped diamond electrode

2150 Application of Bar Adsorptive Microextraction-Large-Volume Injection-Gas Chromatography-Mass Spectrometric Method for the Determination of Trace Levels of Agrochemicals in Real MatricesJoão R. Bernarda, Samir M. Ahmad, Carlos Almeida, Nuno R. Neng and José Manuel F. Nogueira

Graphical AbstractApplication of bar adsorptive microextraction for the analysis of environmental water and wine matrices using floating sampling

technology

2137 Rapid Determination of Lead in Progressive Hair Dye Lotion by Spot Test/Diffuse Reflectance Spectroscopy with a Paper PlatformVitor H. M. Luiz, Lívia M. Saraiva, Ângela P. Martins, Leonardo Pezza and Helena R. Pezza

Graphical AbstractA simple and clean methodology employing a combined spot test/diffuse

reflectance spectroscopy procedure was developed and applied for analysis of lead in progressive hair dyes, using a filter paper platform

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