Quality Control in Soil Chemical Analysis

2007 ◽  
pp. 75-94
Keyword(s):  
Quality Control ◽  
Chemical Analysis

Chemical Analysis, Quality Control and Packaging Issues of Olive Oil

ChemInform ◽  
2003 ◽  
Vol 34 (7) ◽  
Author(s):  
Apostolos Kiritsakis ◽  
Antonis Kanavouras ◽  
Konstantinos Kiritsakis
Keyword(s):  
Quality Control ◽  
Chemical Analysis ◽  
Olive Oil ◽  
Analysis Quality

Automation and Quality in Analytical Laboratories

1994 ◽  
Vol 77 (3) ◽  
pp. 785-789
Author(s):  
Miguel Valcárcel ◽  
Angel Ríos
Keyword(s):  
Analytical Chemistry ◽  
Quality Control ◽  
Chemical Analysis ◽  
Analytical Control ◽  
Systems Quality ◽  
Quality Of Products ◽  
Analytical Laboratories

Abstract After a brief introduction to the generic aspects of automation in analytical laboratories, the different approaches to quality in analytical chemistry are presented and discussed to establish the following different facets emerging from the combination of quality and automation: automated analytical control of quality of products and systems; quality control of automated chemical analysis; and improvement of capital (accuracy and representativeness), basic (sensitivity, precision, and selectivity), and complementary (rapidity, cost, and personnel factors) analytical features. Several examples are presented to demonstrate the importance of this marriage of convenience in present and future analytical chemistry.

scholarly journals A Chemical Marker Proposal for the Lantana genus: Composition of the Essential Oils from the Leaves of Lantana radula and L. canescens

2010 ◽  
Vol 5 (4) ◽  
pp. 1934578X1000500
Author(s):  
José G. Sena Filho ◽  
Haroudo S. Xavier ◽  
José M. Barbosa Filho ◽  
Jennifer M. Duringer
Keyword(s):  
Quality Control ◽  
Chemical Analysis ◽  
Essential Oil ◽  
Essential Oils ◽  
The Other ◽  
Chemical Markers ◽  
Chemical Marker ◽  
High Concentration ◽  
Minor Compounds ◽  
Prior Analysis

Essential oil extracts from the leaves of two Lantana species ( L. radula Sw. and L. canescens Kunth), for which no prior analysis has been reported, were analyzed by GC-MS. This information was utilized to propose chemical markers for Lantana species so that identification between physically similar plant species can be achieved through chemical analysis. Results showed 33 constituents for L. canescens, among which β-caryophyllene (43.9%), β-cubebene (10.1%), elixene (8.6%), β-phellandrene (6.1%), α-caryophyllene (2.6%) and dehydro-aromadendrene (2.6%) were the principle components. L. radula revealed the presence of 21 compounds, the most abundant of which were β-cubebene (31.0%), β-caryophyllene (20.8%), elixene (10.0%), α-salinene (6.4%), β-phellandrene (6.1%), copaene (4.9%) cadinene (1.4%) and psi-limonene (1.4%). The high concentration of β-caryophyllene in the samples tested here and those in the literature make it a good candidate for a chemical marker for Lantana species, with β-cubebene, elixene and β-phellandrene following as minor compounds identified more sporadically in this genus. On the other hand, Lippia species, which are morphologically similar to those from the Lantana genus, would contain limonene, citral, carvacrol, β-myrcene, camphor and thymol as the main chemical markers. These chemical markers would be a powerful tool for maintaining quality control in the extraction of essential oils for use in medicinal applications, as well as in identification of plant specimens to a taxonomist.

scholarly journals Rapid HPTLC-based method for quality control: simultaneous chemical analysis and antioxidant activity determination in herbal, nutraceutical and functional foods

2011 ◽  
Vol 1 ◽  
pp. 960-964 ◽  
Author(s):  
Katalina Muñoz ◽  
Jeniffer Calderón ◽  
Edison Osorio ◽  
Dagoberto Castro ◽  
Raquel Serna ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Quality Control ◽  
Chemical Analysis ◽  
Functional Foods ◽  
Activity Determination

EPA/VA human adipose tissue study: Quality control for chemical analysis

Chemosphere ◽  
1990 ◽  
Vol 20 (7-9) ◽  
pp. 837-842 ◽  
Author(s):  
J.S. Stanley ◽  
R.E. Ayling ◽  
J.C. Remmers ◽  
M.G. Conomos ◽  
J.J. Breen ◽  
...  
Keyword(s):  
Quality Control ◽  
Adipose Tissue ◽  
Chemical Analysis ◽  
Human Adipose Tissue ◽  
Study Quality

Monofloral pollens: Chemical analysis and quality control

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
A Hernandez Teruel ◽  
N Cardinault ◽  
A Beckaert ◽  
A Maciuk
Keyword(s):  
Quality Control ◽  
Chemical Analysis
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