Extraction of compounds with antioxidant activity in guava (Psidium guajava L.) fruit produced in Vélez-Santander, Colombia
摘要：
The effects of the extraction system (50% methanol or 50% methanol pH 2.0), volume/material ratio, t...
doi：
10.1590/S0100-40422009000600030
作 者：
Universidad Nacional...
作者机构：
期刊编号：
期刊标题：
Química Nova
Evaluation of solvent extraction by ultrasound by using high performance liquid chromatography for the determination of polycyclic aromatic hydrocarbons in contaminated soils
摘要：
A method using ultrasonication extraction for the determination of 17 polycyclic aromatic hydrocarbo...
doi：
10.1590/S0100-40422009000800009
作 者：
Landgraf, Maria Diva...
作者机构：
期刊编号：
期刊标题：
Química Nova
The hydrogen electrode: what is there in the textbooks beyond E¸ = 0?
摘要：
The results of an exercise on electrochemistry for General Chemistry students are presented. The dif...
doi：
10.1590/S0100-40422009000400041
作 者：
Universidade de São ...
作者机构：
期刊编号：
期刊标题：
Química Nova
Chlorination of anisole, toluene and nitrobenzene using trichloroisocyanuric acid (tica): computational issues on reactivity and regioselectivity
摘要：
We present in this educational article a theoretical analysis based on DFT/B3LYP 6-311++G (d,p) and ...
doi：
10.1590/S0100-40422009000100041
作 者：
Lima Junior, Cláudio...
作者机构：
期刊编号：
期刊标题：
Química Nova
The state of art of ultra performance liquid chromatography
摘要：
Ultra Performance Liquid Chromatography (UPLC) retains the same principles as High Performance Liqui...
doi：
10.1590/S0100-40422009000100036
作 者：
Jardim, Isabel Crist...
作者机构：
期刊编号：
期刊标题：
Química Nova
Enzymatic synthesis isoamyl butyrate employing commercial microbial lipases
摘要：
Isoamyl butyrate production was investigated using free and immobilized lipases by esterification of...
doi：
10.1590/S0100-40422009000900005
作 者：
Universidade Federal...
作者机构：
期刊编号：
期刊标题：
Química Nova
Aromaticity: historical evolution of the concept and quantitative criteria
摘要：
In this paper the evolution of the concept of aromaticity is discussed. It considers not only histor...
doi：
10.1590/S0100-40422009000700034
作 者：
Universidade Federal...
作者机构：
期刊编号：
期刊标题：
Química Nova
Optimization of methodology to analyze ascorbic and dehydroascorbic acid in vegetables
摘要：
In this study, different solutions to extract vitamin C were tested. High-performance liquid chromat...
doi：
10.1590/S0100-40422009000100017
作 者：
Della Lucia, Ceres M...
作者机构：
期刊编号：
期刊标题：
Química Nova
Temperature measurements by oh lif and chemiluminescence kinetic modeling for ethanol flames
摘要：
OH LIF-thermometry was applied to premixed ethanol flames at atmospheric pressure in a burner for th...
doi：
10.1590/S0100-40422009000800017
作 者：
Sbampato, Maria E.;I...
作者机构：
期刊编号：
期刊标题：
Química Nova
Geochemistry of the final disposal of the water treatment residuals on degraded area
摘要：
This survey determined the physical and chemical properties of the gravel place where urban sludge f...
doi：
10.1590/S0100-40422009000800019
作 者：
Boaventura, Geraldo ...
作者机构：
期刊编号：
期刊标题：
Química Nova
