Results 171 to 180 of about 11,031 (219)

Gut reactions and gut instincts: regulation of intestinal homeostasis by receptor guanylyl cyclase C (GC-C). [PDF]

Biochem J
Bose A, Visweswariah SS.
europepmc   +1 more source

Characterization of German SF₆ Emissions. [PDF]

ACS EST Air
Meixner K, Wagenhäuser T, Schuck TJ, Alber S, Manning AJ, Redington AL, Stanley KM, O'Doherty S, Young D, Pitt J, Wenger A, Frumau A, Stavert AR, Rennick C, Vollmer MK, Maione M, Arduini J, Lunder CR, Couret C, Jordan A, Gutiérrez XG, Kubistin D, Müller-Williams J, Lindauer M, Vojta M, Stohl A, Engel A.   +26 more
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An improved GC-ECD method for measuring atmospheric N2O

Journal of Environmental Sciences, 2013
Gas chromatography equipped with an electron capture detector (GC-ECD) has been widely used for measuring atmospheric N2O, but nonlinear response and the influence of atmospheric CO2 have been recognized as defects for quantification. An original GC-ECD method using N2 as carrier gas was improved by introducing a small flow rate of CO2 makeup gas into ...
Zhang, Yuanyuan, Mu, Yujing, Fang, Shuangxi, Liu, Junfeng   +3 more
exaly   +4 more sources

Precise Measurement of Atmospheric Concentration of CH3Br by GC/ECD

Chemistry Letters, 1997
Abstract A precise measurement system of atmospheric CH3Br at background concentration level was developed for the survey of its spatial and temporal distribution by gas chromatographic separation with dual Porapak Q columns and detection with an electron capture detector.
Shigeto Sudo, Takeshi Tominaga, Yoshihiro Makide   +2 more
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Sensitive GC/ECD analysis of selected PAHa by bromination

Toxicological & Environmental Chemistry, 1991
A method for determination PAH's using GC‐ECD after derivatisation with bromine is presented. ECD is highly selective and sensitive for measuring bromo‐PAH's. The detection limits were improved up to two to three orders of magnitude compared with FID‐detection of underivatised PAH's.
M. Seym, H. Parlar
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GC-ECD evaluation of dicofol toxicity to tropicalAstyanax bimaculatus schubarti

Chromatographia, 1996
Evaluation of the toxicity of Dicofol was carried out onAstyanax bimaculatus schubarti, a characteristic fish species living in tropical rivers and lakes. Experiments were under laboratory controlled conditions with atmospheric air flow and dilution water at 25°C in the static mode.
F. M. Lanças, O. R. de Sá, S. R. Rissato, M. S. Galhiane   +3 more
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Cyanide Distribution in Human Tissue, Determined by GC/ECD/HS

Analytical Letters, 2005
Abstract Cyanide is an important acute poison in forensic sciences. Cyanide determination is in general performed in a blood sample.
Chunshui Zhang, Hui Zheng, Jin Ouyang, Shizhen Feng, Youri EC Taes   +4 more
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Biomonitoring Organochlorine Pesticides in Didelphis virginiana from Yucatan, Mexico by GC-ECD

Bulletin of Environmental Contamination and Toxicology, 2019
The aim of the present work was to apply a validated methodology for the detection of organochlorine pesticides in Didelphis virginiana (Virginia opossum) serum samples collected in Yucatan, Mexico. Recent studies performed to investigate the presence of Organochlorines (OCLs) in water, human blood and milk, and animal tissues from Yucatan have shown ...
Jesús Alfredo, Araujo-León, Gonzalo J, Mena-Rejón, Elsy B, Canché-Pool, Hugo A, Ruiz-Piña   +3 more
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Identification and quantification of organochlorine pesticides by GC-ECD in environmental matrices

Global NEST International Conference on Environmental Science & Technology, 2023
An analytical method for the determination of organochlorine pesticides (OCPs) (α-HCH, β-HCH, γ-HCH (Lindane), δ-HCH, Aldrin, Dieldrin, Endrin, DDT, DDD, DDE, Heptachlor, Chlordane, Endosulfan I and Endosulfan II) in environmental samples (wastewater, soil) uses liquid phase extraction and gas chromatography with electron capture detector (GC-ECD ...
Victor Cojocaru, Ionut Cristea
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Analysis of PCBs in Biotic Matrices by Two-Dimensional GC-ECD

International Journal of Environmental Analytical Chemistry, 1995
The suitability of three GC-ECD systems for the separation of a model mixture containing various congeners of PCBs together with persistent chlorinated aromatics (pesticides and their metabolites, industrial chemicals) was tested. Analyses were performed on two parallel capillaries, the stationary phase of one of them was always in routine practice ...
J. Hajšlová, R. Schoula, K. Holadová, J. Poustka   +3 more
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