scholarly journals ANALYTICAL METHODS FOR THE DETERMINATION OF MERCURY SPECIES USING COLD VAPOUR BASED SPECTROMETRY: APPLICATION IN CHALLENGING SAMPLES AND USE OF NANOPARTICLES AS PHOTOCATALYTIC AGENTS

2019 ◽  
Author(s):  
JAROL RAMON MIRANDA ANDRADES
Keyword(s):  
Analytical Methods ◽  
Mercury Species ◽  
Cold Vapour

Liquid chromatographic – cold vapour atomic fluorescence spectrometric determination of mercury species

2006 ◽  
Vol 29 (2) ◽  
pp. 248-255 ◽  
Author(s):  
Pavlína Houserová ◽  
David Matějíček ◽  
Vlastimil Kubáň ◽  
Jana Pavlíčková ◽  
Josef Komárek
Keyword(s):  
Mercury Species ◽  
Atomic Fluorescence ◽  
Cold Vapour ◽  
Liquid Chromatographic

scholarly journals Development of a method for the determination of ultra-trace level mercury in adipose tissue by cold vapour atomic fluorescence spectrometry

2000 ◽  
Vol 22 (4) ◽  
pp. 103-108 ◽  
Author(s):  
Keith E. Levine ◽  
Reshan A. Fernando ◽  
M. Lang ◽  
Amal Essader ◽  
Robert W. Handy ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Microwave Digestion ◽  
National Research Council ◽  
Fluorescence Spectrometry ◽  
Atomic Fluorescence Spectrometry ◽  
Mercury Species ◽  
Atomic Fluorescence ◽  
Cold Vapour ◽  
Rat Adipose Tissue

A method for the determination of total mercury in rat adipose tissue by cold vapour atomic fluorescence spectrometry (CVAFS) has been developed. Adipose samples were initially subjected to a lyophilization procedure in order to facilitate the homogenization and accurate weighing of small tissue aliquots (~50 mg). A closed vessel microwave digestion procedure using a mixture of sulphuric and nitric acids was used to liberate mercury from the adipose matrix. All mercury species were quantitatively oxidized to Hg(II) by a potassium bromate/bromide oxidation, then reduced to Hg(0) vapour by stannous chloride prior to fluorescence detection. The CVAFS exhibited a linear range of 10 pg Hg/ml to 120 pg Hg/ml. The method detection limit in solution was 2 pg Hg/ml, or 1 ng Hg/g adipose tissue, based on a nominal 50 mg sample and a final volume of 25 ml. A reference material from the National Research Council of Canada (DOLT-2, trace metals in dogfish liver) was prepared in quadruplicate in order to assess the accuracy and precision of the method. Mercury in this material was recovered at 2.22 ± 0.08 μ g/g, which is 104% of the certified level (2.14 ± 0.10 μ g/g).

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

The relationship between musty-odor-causing organisms and water quality in Lake Biwa

1995 ◽  
Vol 31 (11) ◽  
pp. 153-158 ◽  
Author(s):  
M. Kajino ◽  
K. Sakamoto
Keyword(s):  
Water Quality ◽  
Data Analysis ◽  
Green Algae ◽  
Analytical Methods ◽  
Lake Biwa ◽  
Blue Green Algae ◽  
Odor Compounds ◽  
Musty Odor ◽  
The Relationship

Musty odor has occurred annually in Lake Biwa since 1969. Osaka municipal waterworks, which is located downstream of Lake Biwa, has made many efforts to treat musty-odor compounds produced in Lake Biwa from spring through autumn. With the development of analytical methods for the determination of musty-odor compounds, we have been able to confirm that planktonic blue-green algae are the major causes of the musty-odor occurrences. The relationship between the growth of blue-green algae and the water quality was not so apparent. However, through our data analysis focusing on the relationship between musty-odor occurrences due to Phormidium tenue or Oscillatoria tenuis and some nutrients in Lake Biwa, we found that the concentration of nitrate in water may be an important parameter for the estimation of growth of the algae and the musty-odor behavior.

A Review of Analytical Methods for the Determination of Tibolone: Pharmacokinetics and Pharmaceutical Formulations Analysis and Application in Doping Control

2020 ◽  
Vol 17 (1) ◽  
pp. 31-39
Author(s):  
Marilene Lopes Ângelo ◽  
Fernanda de Lima Moreira ◽  
Ana Laura Araújo Santos ◽  
Hérida Regina Nunes Salgado ◽  
Magali Benjamim de Araújo
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Analytical Methods ◽  
Estrogenic Activity ◽  
Biological Fluids ◽  
Pharmaceutical Formulations ◽  
Doping Control ◽  
Specific Effects ◽  
In Doping

Background:: Tibolone is a synthetic steroid commercialized by Organon under the brand name Livial (Org OD14), which is used in hormone therapy for menopause management and treatment of postmenopausal osteoporosis. Tibolone is defined as a selective tissue estrogenic activity regulator (STEAR) demonstrating tissue-specific effects on several organs such as brain, breast, urogenital tract, endometrium, bone and cardiovascular system. Aims:: This work aims to (1) present an overview of important published literature on existing methods for the analysis of tibolone and/or its metabolites in pharmaceutical formulations and biological fluids and (2) to conduct a critical comparison of the analytical methods used in doping control, pharmacokinetics and pharmaceutical formulations analysis of tibolone and its metabolites. Results and conclusions: : The major analytical method described for the analysis of tibolone in pharmaceutical formulations is High Pressure Liquid Chromatography (HPLC) coupled with ultraviolet (UV) detection, while Liquid Chromatography (LC) or Gas Chromatography (GC) used in combination with Mass Spectrometry (MS) or tandem mass spectrometry (MS/MS) is employed for the analysis of tibolone and/or its metabolites in biological fluids.

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