GC-MS和FTIR在琥珀和柯巴树脂鉴定中的应用 ㊀第19卷㊀第2期2017年㊀㊀3月㊀宝石和宝石学杂志 J o u r n a l o fG e m s a n dG e m m o l o g y V o l .19㊀N o .2M a r .㊀2017㊀收稿日期:2016-10-27作者简介:李瑾珺(1992-),女,硕士研究生,主要从事宝石学方面...
Infrared spectrometers were first developed in the United States in the mid-1940s. Initially, their applications were confined to research and development work on organic compounds. In 1954, the first Japanese instruments were manufactured by the Applied Optics Research Institute, the predecessor of JA...
Iron oxides are major sinks of a range of environmental elements including organic compounds. In this study, the adsorption of the broadly studied model protein BSA onto the hematite mineral surface was characterized as a function of pH, ionic strength, and BSA concentration using in-situ ...
Attenuated total reflectance FTIR allows the surface of a material to be analyzed when looking at multi-layered compounds, coatings or even thin films of a foreign material on a surface. With hundreds of thousands of reference spectra available, identification of the class of the primary component ...
Fig. 1.Diffuse reflectance infrared Fourier transform spectra of a high organic matter soil (120g C kg−1soil) across a range of KBr dilution. The most recent FTIR technique for soil analysis isattenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR),unique in that it off...
All factors, levels, and oil yields are tabulated in supplementary material Table S2. Fig. 2, shows the graphical representations of the oil yield investigation. When compared to ethanol and n-hexane as a solvent and fine and coarse particle size, n-hexane is better than ethanol, and fine ...
Urea (nitrogen compounds) is the end-product of amino acid metabolism; its level in the urine is directly proportional to protein intake. A protein-rich diet tends to decrease the absorbance in the 3000–2600/cm region; however, no such dietary habit was reported in the questionnaires by the...
Despite their having much greater potential for compositional and structural diversity, heterometallic metal–organic frameworks (MOFs) reported so far hav... Quan-Guo,Zhai,Xianhui,... - 《Journal of the American Chemical Society》 被引量: 20发表: 2016年 Determination of choline and ethanolamine ...
Since the shielding gas used was CO2, there is possibility of formation of carbon organic compounds in welding fumes and this is what is likely visible in the region of 1535–1540 cm−1. The peak at 586 cm−1 is due to stretching vibration of Mn-O and it indicates the presence...
While LIDAR operates in the UV-VIS-NIR range and usually has one laser operating at a specific wavelength, the OP-FTIR operates in the mid-IR range where many organic compounds present unique spectral "fingerprints", adding potential for gaining chemical informa- tion of the aerosols. The OP...