235. Diffusive Sampling/Thermal Desorption/Mass Spectrometry Techniques for Monitoring Personal Exposures to Toxic Chemical Substances

2003 ◽  
Author(s):  
W. Hendricks
Keyword(s):  
Mass Spectrometry ◽  
Thermal Desorption ◽  
Diffusive Sampling ◽  
Toxic Chemical ◽  
Chemical Substances ◽  
Desorption Mass Spectrometry ◽  
Personal Exposures ◽  
Toxic Chemical Substances

scholarly journals KADAR SENYAWA TOKSIK DALAM DARAH IKAN NILA (Oreochromis niloticus) SAAT MUSIM UP-WELLING DI DANAU MANINJAU, SUMATRA BARAT

2020 ◽  
Vol 38 (1) ◽  
pp. 25
Author(s):  
Silvi Susanti
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Common Species ◽  
Toxic Chemical ◽  
Chemical Substances ◽  
Nile Tilapia Oreochromis Niloticus ◽  
West Sumatra ◽  
Phosphate Nitrate ◽  
Net Cages ◽  
Toxic Chemical Substances

Maninjau lake is the largest center for the freshwater floating-net-cage fisheries system in West Sumatra. Every year, during the up-welling season, a huge number of fish suffered to death in the lake including nile tilapia (Oreochromis niloticus), a common species cultivated in the floating-net cages. This current study aimed to determine the factors contributing to the death of fish by measuring the concentration of toxic chemical substances in the blood plasm of nile tilapia as well as in the subtrate collected from the bottom of the lake. The samples were collected in the sites with higher number of floating-net cages as well as higher number of mass death of fish (Tanjung Sani, Pakan Raba’a dan Maninjau) during the up-welling season. The result revealed that the levels of phosphate, nitrate, nitrit, and amonium were higher in the blood plasm of the fish. Moreover, the levels of those chemical substances were also higher in the substrate of the lake. The higher concentration of the toxic chemical substances might contribute to the mass death of fish living in the floating-net cages during the up-welling season.

Chemometrics in Medicine and Pharmacy

2012 ◽  
Vol 11 (1) ◽  
pp. 11-26 ◽  
Author(s):  
Ján Mocák
Keyword(s):  
Drug Design ◽  
Clinical Diagnosis ◽  
Active Species ◽  
Biologically Active ◽  
Toxic Chemical ◽  
Chemical Substances ◽  
Effective Use ◽  
The University ◽  
Toxic Chemical Substances

Chemometrics in Medicine and PharmacyThis minireview summarizes the basic ways of application of chemometrics in medicine and pharmacy. It brings a collection of applications of chemometric used for the solution of diverse practical problems, e.g. exploitation of biologically active species, effective use of biomarkers, advancement of clinical diagnosis, monitoring of the patient's state and prediction of its perspectives, drug design or classification of toxic chemical substances. The aim of this contribution is a brief presentation of versatile potentialities of contemporary chemometrical techniques and relevant software. They are exemplified by typical cases from literature as well as by own research results of the Chemometrics group at Department of Chemistry, the University of Ss. Cyril & Methodius in Trnava.

scholarly journals Epithelioid Angiosarcoma of the Small Intestine After Occupational Exposure to Radiation and Polyvinyl Chloride: A case Report and Review of Literature

Sarcoma ◽  
2005 ◽  
Vol 9 (3-4) ◽  
pp. 161-164 ◽  
Author(s):  
Maged F. Khalil ◽  
Asha Thomas ◽  
Adel Aassad ◽  
Moshe Rubin ◽  
Robert N. Taub
Keyword(s):  
Soft Tissue Sarcomas ◽  
External Beam Radiation Therapy ◽  
External Beam Radiation ◽  
Review Of Literature ◽  
Toxic Chemical ◽  
Internal Organs ◽  
Epithelioid Angiosarcoma ◽  
Beam Radiation ◽  
Chemical Substances ◽  
Toxic Chemical Substances

Angiosarcomas represent 1–2% of soft tissue sarcomas and most frequently occur in the subcutis. They may affect internal organs, such as the heart, liver, and spleen, and only rarely do they emerge in the gastrointestinal tract. The association between angiosarcomas and certain toxic chemical substances or previous external-beam radiation therapy is well documented.

Determination of Hydrogen in Steel by Thermal Desorption Mass Spectrometry

2010 ◽  
Vol 81 (7) ◽  
pp. 499-507 ◽  
Author(s):  
K. Bergers ◽  
E. Camisão de Souza ◽  
I. Thomas ◽  
N. Mabho ◽  
J. Flock
Keyword(s):  
Mass Spectrometry ◽  
Thermal Desorption ◽  
Desorption Mass Spectrometry

Mass spectrometry coupled with vacuum thermal desorption for enhanced volatile organic sample analysis

2020 ◽  
Vol 12 (14) ◽  
pp. 1852-1857
Author(s):  
Quan Yu ◽  
Siyu Xu ◽  
Wenyan Shi ◽  
Yuan Tian ◽  
Xiaohao Wang
Keyword(s):  
Mass Spectrometry ◽  
Thermal Desorption ◽  
Sample Analysis ◽  
Spectrometry Method ◽  
Desorption Mass Spectrometry ◽  
Mass Spectrometry Method ◽  
Organic Sample ◽  
Volatile Organic

Developing a vacuum thermal desorption mass spectrometry method to facilitate analysis of volatile organic samples.

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