scholarly journals Review of analytical methods for the determination of chlorine dioxide

2007 ◽  
Vol 5 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Paraskevas Tzanavaras ◽  
Demetrius Themelis ◽  
Fotini Kika
Keyword(s):  
Chlorine Dioxide ◽  
Analytical Methods ◽  
Critical Discussion ◽  
Bleaching Agent ◽  
Figures Of Merit ◽  
Advantages And Disadvantages ◽  
Analytical Procedures ◽  
Published Research ◽  
Analytical Figures Of Merit

AbstractThe present study reviews more than twenty years (1985-present) of published research on the development and application of analytical procedures for the determination of chlorine dioxide, a widely used disinfectant and bleaching agent. The review covers a variety of techniques including batch and automated spectrophotometry and fluorimetry, electroanalysis and chromatography. The analytical figures of merit to the methods are presented, while critical discussion regarding their advantages and disadvantages is addressed.

scholarly journals DEVELOPMENT OF FLOW INJECTION METHOD FOR ONLINE DETERMINATION OF THIOCYANATE BASED ON OXIDATION BY PERMANGANATE

2010 ◽  
Vol 10 (2) ◽  
pp. 167-171 ◽  
Author(s):  
Hermin Sulistyarti ◽  
Spas D. Kolev ◽  
Stephanie Lim
Keyword(s):  
Detection Limit ◽  
Thyroid Gland ◽  
Flow Injection ◽  
Hydrogen Cyanide ◽  
Figures Of Merit ◽  
Sample Throughput ◽  
Teflon Membrane ◽  
Developing Method ◽  
Analytical Figures Of Merit

The importance of developing method for thiocyanate becomes obvious, because thiocyanate can inhibit iodine uptake of thyroid gland leading to mumps disease. In this work, thiocyanate is oxidized by permanganate in the acid donor stream to cyanide, which is directly converted to hydrogen cyanide. Then, hydrogen cyanide diffuses through a Teflon membrane into acceptor stream containing nickel(II) in ammoniacal buffer to form tetracyanonickelate(II) which is detected spectrophotometrically at 267 nm. Analytical figures of merit were linear up to 50 mg L-1 for thiocyanate, with RSD of 1.34%, and detection limit of 0.07 mg L-1, respectively. Interfering anions were eliminated under stoichiometric amount of permanganate and sample throughput was 20 h-1. The method was validated for determining thiocyanate samples from synthetic and gold process waters with satisfactory results.   Keywords: Thiocyanate, flow injection, permanganate, spectrophotometry

Proficiency testing for determination of lead and arsenic in cosmetics: comparison of analytical procedures and evaluation of laboratory performances

2015 ◽  
Vol 7 (7) ◽  
pp. 3169-3177 ◽  
Author(s):  
Zhixiong Zhong ◽  
Gongke Li ◽  
Jianbo Luo ◽  
Wensheng Chen ◽  
Liping Liu ◽  
...  
Keyword(s):  
Proficiency Testing ◽  
Analytical Methods ◽  
Proficiency Testing Scheme ◽  
Testing Scheme ◽  
Analytical Procedures

Proficiency testing scheme (CNAS T0419) involving 217 laboratories in China using their regular analytical methods for the determination of lead and arsenic in foundation cream cosmetics.

scholarly journals Integrated luminometer for the determination of trace metals in seawater using fluorescence, phosphorescence and chemiluminescence detection

2002 ◽  
Vol 24 (2) ◽  
pp. 41-47 ◽  
Author(s):  
P. J. Worsfold ◽  
E. P. Achterberg ◽  
A. R. Bowie ◽  
V. Cannizzaro ◽  
S. Charles ◽  
...  
Keyword(s):  
Trace Metals ◽  
Room Temperature ◽  
Estuarine Water ◽  
Chemiluminescence Detection ◽  
Room Temperature Phosphorescence ◽  
Figures Of Merit ◽  
Technical Details ◽  
Seawater Samples ◽  
Analytical Figures Of Merit

The paper describes an integrated luminometer able to perform fluorescence (FL), room temperature phosphorescence (RTP) and chemiluminescence (CL) measurements on seawater samples. The technical details of the instrumentation are presented together with flow injection (FI) manifolds for the determination of cadmium and zinc (by FL), lead (RTP) and cobalt (CL). The analytical figures of merit are given for each manifold and results are presented for the determination of the four trace metals in seawater reference materials (NASS-5, SLEW-2) and Scheldt estuarine water samples.

The Determination of Mercury in Some American Coals

1972 ◽  
Vol 26 (1) ◽  
pp. 44-48 ◽  
Author(s):  
J. V. O'Gorman ◽  
N. H. Suhr ◽  
P. L. Walker
Keyword(s):  
Neutron Activation ◽  
Atomic Absorption ◽  
Analytical Methods ◽  
Analytical Procedures

This study deals with the use of three different analytical methods for the determination of mercury in coals: (a) double gold amalgamation, nameless atomic absorption, (b) neutron activation and (c) combustion-solution, nameless atomic absorption. Ten coal samples of varying rank were analyzed and comparisons are drawn between the various analytical procedures. The distribution of mercury in coals is discussed briefly.

scholarly journals The Influence of Ionic Liquids on the Effectiveness of Analytical Methods Used in the Monitoring of Human and Veterinary Pharmaceuticals in Biological and Environmental Samples—Trends and Perspectives

Molecules ◽  
2020 ◽  
Vol 25 (2) ◽  
pp. 286 ◽  
Author(s):  
Natalia Treder ◽  
Tomasz Bączek ◽  
Katarzyna Wychodnik ◽  
Justyna Rogowska ◽  
Lidia Wolska ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Sample Preparation ◽  
Analytical Methods ◽  
Physiological Activity ◽  
Terrestrial Ecosystems ◽  
Veterinary Pharmaceuticals ◽  
Advantages And Disadvantages ◽  
Extraction And Separation ◽  
Biological And Environmental Samples

Recent years have seen the increased utilization of ionic liquids (ILs) in the development and optimization of analytical methods. Their unique and eco-friendly properties and the ability to modify their structure allows them to be useful both at the sample preparation stage and at the separation stage of the analytes. The use of ILs for the analysis of pharmaceuticals seems particularly interesting because of their systematic delivery to the environment. Nowadays, they are commonly detected in many countries at very low concentration levels. However, due to their specific physiological activity, pharmaceuticals are responsible for bioaccumulation and toxic effects in aquatic and terrestrial ecosystems as well as possibly upsetting the body’s equilibrium, leading to the dangerous phenomenon of drug resistance. This review will provide a comprehensive summary of the use of ILs in various sample preparation procedures and separation methods for the determination of pharmaceuticals in environmental and biological matrices based on liquid-based chromatography (LC, SFC, TLC), gas chromatography (GC) and electromigration techniques (e.g., capillary electrophoresis (CE)). Moreover, the advantages and disadvantages of ILs, which can appear during extraction and separation, will be presented and attention will be given to the criteria to be followed during the selection of ILs for specific applications.

scholarly journals Multicriteria Decision Analysis and Grouping of Analytical Procedures for Phthalates Determination in Disposable Baby Diapers

Molecules ◽  
2021 ◽  
Vol 26 (22) ◽  
pp. 7009
Author(s):  
Magdalena Fabjanowicz ◽  
Justyna Płotka-Wasylka ◽  
Marek Tobiszewski
Keyword(s):  
Decision Analysis ◽  
Multicriteria Decision Analysis ◽  
Ideal Solution ◽  
Green Analytical Chemistry ◽  
Multicriteria Decision ◽  
Figures Of Merit ◽  
Order Preference ◽  
Analytical Procedures ◽  
Selection Of ◽  
Analytical Figures Of Merit

This study presents the application of one of the tools from the multicriteria decision analysis set (MCDA), the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS). Selected green analytical chemistry metrics were used to rank analytical procedures for the phthalate determination in disposable baby diapers. Nine analytical procedures were assessed in order to find one that has the lowest environmental impact and the best analytical figures of merit. Nine different criteria, where weighting was based on the experts’ evaluation, were used in the procedures’ assessment. With the use of TOPSIS, an easy and straightforward technique, selection of the most appropriate procedure was made.

Methods for determination of labile soil organic matter: An overview

2010 ◽  
Vol 27 (2) ◽  
pp. 49-60 ◽  
Author(s):  
Eduard Strosser
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Analytical Methods ◽  
Wide Spectrum ◽  
Future Research ◽  
Soil Productivity ◽  
Advantages And Disadvantages ◽  
Functional Characterisation ◽  
Labile Soil Organic Matter

Methods for determination of labile soil organic matter: An overviewSoil organic matter (SOM) can be divided into three main pools: labile, stable and inert. Research over recent years has focused on the labile fraction (LF), as it is considered a quickly reactive indicator of soil productivity and health, and important as a supply of energy for soil micro-organisms. A wide spectrum of analytical methods has been used to determine and/or evaluate LF, based on physical, chemical and biochemical principles. The advantages and disadvantages of each technique are explored in this work, but none of the methods can determine LF sufficiently, either because a part of the LF is not involved or because further characterisation is missing. Although analytical methods are widely used to evaluate changes in soil management or organic carbon turnover, the practical question of the quantity and quality of SOM cannot be answered completely. It is also suggested that future research should focus on the interactions among SOM fractions and their better chemical and functional characterisation. It is possible to use a combination of the analytical methods reviewed here in order to accomplish this objective.

Analytical Methods for Determination of Balofloxacin in Tablets

2012 ◽  
Vol 2 (8) ◽  
pp. 66-68
Author(s):  
Shreya Nayak ◽  
◽  
Sanjay Pai P.N. Sanjay Pai P.N.
Keyword(s):  
Analytical Methods
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