Ali Gökmen

E-mail

agokmen@metu.edu.tr

Department

Department of Chemistry

Indoor radon concentrations and radon doses at three districts of Ankara, Turkey and raising public awareness on the issue Kildir, Mehmet; Gokmen, Inci; Gökmen, Ali (2016-01-01) Indoor radon concentrations at METU, CIG-DEM and DOSTLAR in Ankara were measured using electrets. The statistical analysis of the data indicated a lognormal distribution of radon concentrations, with no significant differe...
Development of a 635nm-Laser Diode Spectrometer for Continuous Monitoring of Amino Nitrogen in the Beet Sugar Industry ÜLGEN, Ahmet; Gökmen, Ali; ŞAHİN, Uğur; Herdem, Huelya; Cengiz, Hasan I. (Informa UK Limited, 2009-01-01) The quality of sugar beet is affected by harmful nitrogen compounds. Although nitrogen is one of the essential elements for plants, introduction of excess nitrogen as fertilizer to the soil increases the nitrogen containin...
Real-time monitoring of indigo concentrations in the dyebath with a laser diode spectrometer Sahin, U; Ulgen, A; Kekec, A; Gökmen, Ali (SAGE Publications, 2004-03-01) A laser diode absorption spectrometer is coupled with a continuous dilution system for real-time monitoring of indigo dyeing of denim yarn. The reduced form of indigo in the dyebath is continuously pumped by a peristaltic ...
Development of a Laser diode fiber Optic Fluorometer for in situ Phytoplankton Measurement Baytekin, Hasan Tarık; Gökmen, Ali (null; 1997-09-21)
BACKGROUND SUPPRESSION OF AR LINES IN GLOW-DISCHARGE ATOMIC EMISSION-SPECTROMETRY BY A LOCK-IN AMPLIFIER AND KALMAN FILTER DECONVOLUTION ULGEN, A; DOGAN, M; Gökmen, Ali; YALCIN, S (1993-01-01) The Ar spectral lines are suppressed in Grimm-type glow discharge lamp atomic emission spectrometry (GDL-AES) by a double voltage modulation technique. The GDL is modulated between two voltage levels, typically 400 and 700...
DETERMINATION OF SELENIUM IN HUMAN DIETS BY RADIOCHEMICAL NEUTRON-ACTIVATION ANALYSIS ELHALLAQ, YH; GOKMEN, IG; ARAS, NK; Gökmen, Ali (Royal Society of Chemistry (RSC), 1992-03-01) A post-irradiation radiochemical separation technique was tested for the determination of selenium levels in diet samples, collected by using a duplicate portion technique, from both rural and urban population groups in Tu...
Mass spectrometric study of negative ions from unsaturated carbonyls Hacaloğlu, Jale; Gökmen, Ali; Baumgartel, H. (1989-01-01) Negative ion formation from some unsaturated carbonyl derivatives is investigated as a function of electron energy by using a monochromatic (0.2 eV) and low-energy (0-10 eV) electron beam and a mass spectrometer. Negative ...

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