نتایج جستجو برای: wdxrf
تعداد نتایج: 53 فیلتر نتایج به سال:
A method of determination of high Zn and Pb concentrations by means of EDXRF (energy-dispersive X-ray fluorescence spectrometry) is presented. Zn and Pb concentration in soil samples from contaminated areas ranged within a limit of Zn: 800–2000ppm and Pb: 200–600ppm. Soil analysis was conducted directly after the samples had been dried and powdered, as well as in situ in polluted areas. Due to ...
The stable of natural diatomite supported by potassium hydroxide (KOH) as catalysts were synthesized for biodiesel production. A heterogeneous base catalyst prepared impregnating KOH onto was also used to synthesize from palm oil. All samples have been thoroughly characterized Wavelength Dispersive X-ray Fluorescence (WDXRF), diffraction (XRD), N2 adsorption/desorption, Scanning electron micros...
Salt efflorescences from metal sulphides and their waste are important drivers of pollution both in around mining areas. However, little is known about these supergene minerals, particularly the areas Mediterranean. This study aims to characterise saline leachates a Mediterranean area located Southeast Spain. The physicochemical characteristics were determined using stereomicroscopy composition...
Fluorites are found in the region between Hamit, Karakütük, Bayındır and Yeniyapan villages of Kaman District (Kırşehir-Türkiye). located altered levels due to faults quartz syenites containing gray-pink colored K-feldspar, plagioclase quartz, amphibole biotite type mafic minerals Upper Cretaceous aged. Central Anatolian Granitoids, observed purple green places, pink, yellow, white colors as ve...
Findings of Iron Age metallurgical activities related to tin metal and mining are very rare. In the present work, we a detailed study Outeiro de Baltar hillfort, dated Late Age/Early Roman period, located in place where 20th century work took place. Elemental microstructural analysis by portable, micro wavelength dispersive X-ray fluorescence spectrometry (pXRF, micro-XRF WDXRF) scanning electr...
Abstract To investigate the use of biomass in novel HIsarna technology, reduction FeO slag by chars produced from thermal coal (TC), charcoal (CC), and Bana grass char (BGC) was studied. A drop tube furnace coupled with a quadrupole mass spectrometer (DTF-QMS) employed to study injection into pre-melted temperature range between 1450 °C 1525 °C. The rate calculated evolved gases extent confirme...
Mine waste constitutes one of the biggest environmental and management problems, both due to its quantity danger when they are rich in toxic elements. There is a wide variety from oxidation ores metal mining areas, sulphide other minerals. These residues may be enriched potentially elements that can spread contaminate ecosystems, farmland villages. This study has focused on characterization eva...
مطالعه ی اشیاء باستانی با استفاده از روش های غیر مخرب که به نمونه های باستانی آسیب نمی رساند، امری متداول در دنیای امروزی گردیده است. تکنیک هایی نظیر pixe (تابش اشعه ایکس القا شده توسط پروتون)، xrf (فلورسانس اشعه ایکس)، xrd (پراش اشعه ایکس) برای این منظور به کار گرفته شده اند. در این پژوهش نیز ترکیب شیمیایی 16 سکه نقره متعلق به شاهان ساسانی هم چون: پیروز، بلاش، قباد اول، خسرو اول، هرمز چهارم، ...
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