α‒Fe2O3/MoS2 nanocomposites were synthesized via hydrothermal method and characterized in terms of crystal structure, particle size and morphology, elemental purity and optical properties. Results confirmed the formation of α‒Fe2O3/MoS2 nanocomposites containing hematite nanoparticles with average diameter of 40 nm and MoS2 nanosheets with hexagonal crystal structure and sheet thickness o...

The peel volatile constituents and juice quality parameters of four tangerine cultivars were investigated in this study. Peel flavor constituents were extracted by using cold-press and eluted by using n-hexane. Then all analyzed by GC-FID and GC-MS. Total soluble solids, total acids, pH value, ascorbic acid as well as density and ash were determined in juice obtained from tangerine cultivars. F...

The effects of mandarin scions on peel components and juice quality parameters were investigated in this study. Peel flavor components were extracted by using cold-press and eluted by using n-hexane. Then all analyzed by GC-FID and GC-MS. Total soluble solids, total acids, pH value, ascorbic acid as well as density and ash were determined in juice obtained from mandarin scions. Twenty-seven, Tw...

Abstract An analytical method for detecting impurities in high-purity sulfur hexafluoride (SF 6 ) gas is established by using chromatography (GC) based on the enhanced plasma detector (EPD). The concentration of (hydrogen, oxygen, nitrogen, methane, carbon monoxide, dioxide, tetrafluoride, hexafluoroethane, and octafluoropropane) can be quantitatively detected through one-time sampling external...

Chromatographic quality control testing of radioiodinated monoclonal antibodies (WJ MOAB) is necessary to assess radiochemical purity prior to patient injection. Conventional gel exclusion chromatography column scanning (GCS) is time consuming and not practical. We investigated rapid miniaturized chromatographic procedures for evaluating the radiochemical purity of 1311 MOAB. Three systems were...

The oxidation behaviors of LiH under a high purity argon atmosphere, an argon atmosphere with some O2 and H2O impurities, and ambient air at both room and high temperatures, are investigated using a variety of analytical instruments including X-ray diffractometry, thermogravimetry, mass spectrometry, scanning electron microscopy, and specific surface area analysis. The oxidation behaviors of th...

The chemicals and materials used to manufacture and package semiconductors and printed circuit boards are called electronic chemicals. The purity of these electronic chemicals, given by the industry association Semiconductor Equipment and Materials International (SEMI), is a very compromising concern for the semiconductor industrial sector, so very strict requirements are set to avoid microelec...