A review of the use of the Doehlert matrix as a chemometric tool for the optimization of
methods in analytical chemistry and other sciences is presented. The theoretical principles …

The state-of-the-art of species-selective analysis for trace metals and metalloids in biological
materials by chromatographic and electrophoretic separation techniques with element …

Studies on the speciation of arsenic in environmental and biological samples are a subject
of current interest. Because of the low level of arsenic species in real samples, many …

Even with the emergence of advanced techniques of separation and identification, it is rarely
possible to analyse food without manipulation. The traditional techniques for sample …

In the present paper is presented a review on the application of Doehlert design in the
optimization of some of the steps of analytical procedures aimed the analysis of food …

In the present paper a procedure for preconcentration and determination of vanadium and
copper in seawater using inductively coupled plasma optical emission spectrometry (ICP …

A method for arsenic speciation in soils is developed, based on extraction with a mixture of 1
mol l− 1 of phosphoric acid and 0.1 mol l− 1 of ascorbic acid, and further measurement with …

微波辅助萃取技术的进展 Page 1 微波辅助萃取技术的进展 李核李攻科3 张展霞 (中山大学化学与
化学工程学院,广州510275) 摘要介绍了微波辅助萃取技术的特点和装置,综述了近年来微波辅助 …

This paper provides a review on separation methods and analytical techniques for the
determination of several species of organic and inorganic arsenic in different matrices …

This paper describes the use of dilute nitric acid for the extraction and quantification of
arsenic species. A number of extractants (eg water, 1.5 M orthophosphoric acid, methanol …