What does ftir analysis do?4 answersFourier transform infrared (FTIR) analysis is a fast and non-destructive analytical method that is used in various industries such as pharmaceuticals, cosmetics, food, and environmental analysis. It involves the use of infrared spectroscopy to determine the concentration of specific compounds or analyze the chemical and physical properties of materials. FTIR spectroscopy can be used for qualitative and quantitative analysis of medicines, foods, and other daily products. It is a highly efficient technique that can simultaneously identify a wide range of frequency components, making it useful for different frequency ranges and covering various regions of the electromagnetic spectrum. FTIR analysis provides a rapid, nondestructive, and precise method for analyzing the chemical and physical state of materials, making it widely applied in the food industry for quality control, authenticity determination, and analysis of various food products. Additionally, FTIR analysis can be used for chemical structural elucidation of pure compounds and heterogeneous samples, although its accuracy may vary depending on the complexity of the sample.
How is FTIR spectroscopy helping in analysis for analytical chemistry?5 answersFTIR spectroscopy is helping in the analysis for analytical chemistry by providing a method to detect the presence of functional groups and molecules directly from a mixed solution of organic molecules. It is useful for monitoring chemical reactions and can accurately predict the concentration of components in these reactions. This is achieved by decomposing the spectrum into peaks with various widths using the wavelet transform and building a sparse linear regression model using the wavelet coefficients. The interpretation of the models is expected to reveal the relation of broad regions in spectra to the model prediction, making it useful for the interpretation of spectra. Additionally, FTIR spectroscopy has been used for the quantification of glucose transport in cell barrier models and for the study of solid-liquid interfaces of heterogeneous catalysts. It has also been applied for the rapid determination of Sudan dye in paprika powder, providing a low-cost alternative to liquid chromatography techniques. Furthermore, FTIR spectroscopy has been used for the structural analysis of RNA, including the analysis of helical parameters and noncanonical base pairing.
What are the most common FTIR peaks in a molecule?5 answersThe most common FTIR peaks in a molecule can vary depending on the specific molecular structure and functional groups present. However, some common peaks include those associated with the stretching vibrations of functional groups such as C=O (carbonyl), O-H (hydroxyl), N-H (amine), and C-H (alkyl) bonds. These peaks are often observed in the mid-infrared region of the spectrum, typically between 4000-400 cm^-1. The exact positions and intensities of these peaks can provide valuable information about the molecular composition and bonding environment. For example, the presence of specific peaks can indicate the presence of certain functional groups or chemical bonds. Additionally, the shape and width of the peaks can provide insights into the molecular structure and interactions.
What are the challenges of using highly alkaline ionized water in processing?3 answersHighly alkaline ionized water has several challenges in processing. One challenge is the high cost and energy consumption associated with electrolysis, which is needed to produce alkaline ionized water. Another challenge is the need for a pH accelerator to achieve a pH of 12 or higher, which can be detrimental to the environment and safety. Additionally, the use of highly concentrated electrolytic water with a pH of 13.0 or more may not be economically feasible for producing organic agricultural products in larger quantities. Furthermore, the process of producing alkaline ion water for cleaning purposes may require the use of chemically synthesized substances, which can limit its effectiveness.
How can FTIR spectra be used to diagnostic cancer?5 answersFTIR spectra can be used for cancer diagnosis by analyzing the biochemical information and spectral changes in different types of cancer. Machine learning algorithms, such as K-nearest neighbor (KNN) and support vector machine (SVM), can be coupled with FTIR spectroscopy to accurately classify breast cancer subtypes. In the case of esophageal squamous cell carcinoma (ESCC), FTIR spectroscopy can differentiate late-stage cancer from healthy individuals with high accuracy, sensitivity, and specificity using serum or plasma samples. Hyperspectral images acquired through micro-FTIR spectroscopy can be modeled and analyzed using deep neural networks, achieving high accuracy in characterizing healthy, inflammatory, and tumor colon tissues. Attenuated total reflection-FTIR spectroscopy using blood samples has identified biomolecular markers and spectral changes for the precise diagnosis of lung cancers, with high classification accuracy using machine learning algorithms like partial least square discriminant analysis (PLS-DA) and back propagation (BP) neural network.
In what region of the FT-IR spectrum peptides are observed?5 answersPeptides are observed in the far-infrared region of the FT-IR spectrum.