Figure 4. FTIR Spectroscopy functional group correlation table Near-IR Spectroscopy The Near-IR portion of the electromagnetic spectrum falls between 4,000 to 12,800 cm-1. This region consists of overtones (two of the same vibrational modes occurring simultaneously) and combinations (two different ...
compared to the predictions by the classical wetting models (equation (1)). The numbers 1–4 refer to the structure ID’s as tabulated in Table1. The plotted values for the critical contact angle refer to intrinsic contact angles on a ...
The correlation table indicated, most of the original structure of the building block of the wooden part was deteriorated and marked the lowest correlation value of the 4th year sample with control Q. The sudden changing pattern of 2nd derivative spectrum L+Q-3 to more flatten pattern spectrum ...
In order to find the best wavenumber that offer a suitable correlation between the actual value of lard and the FTIR estimated value, the FTIR spectral characteristics of various ratios of lard with variable concentrations were analyzed. Five different regions of the mid-IR spectrum were selected....
The correlation between the peaks and natural urine components is validated by artificial urine solutions. Less-than-normal levels of uric acid, phosphate groups, and ammonium (NH4+) can be listed as probable causes. This study shows that ATR-FTIR can serve as a practical and non-invasive ...
The use of ATR-FTIR in combination with data analysis by two-dimensional correlation spectroscopy (2D- COS) is well suited for the interpretations of spectroscopic signals of chemical processes that are develop in response to an external disturbance, such as variations in pH, concentration, and ...
傅立叶变换红外光谱仪的用途 20 30 40 50 60 70 80 90 100 20 30 40 50 60 70 80 90 100 110 Specified Estimated x a x b x d x e x c x f Std Error of Prediction: Estimate = 1.696 Actual = 2.1 Multiple Correlation = 0.9987 % Variance (R squared) = 99.7419 Std Error of ...
黄花蒿与其近缘种化学成分的 FTIR 和 GC~MS 鉴定与分析 [J]. 广西植物ꎬ 2017ꎬ 37(2):234-241 KONG DXꎬ LI YQꎬ ZOU Rꎬ et al. GC~MS and FTIR identification and analysis of chemical component in Artemisia annua and its closely related species [J]. Guihaiaꎬ 2017ꎬ 37(2)...
We observed that the proposed method is not affected by the other foreign species and pesticides shown in Table S1. 3.5. Linearity, accuracy and precision For the UV spectrophotometric method linear correlation were found between absorbance curves for flonicamid in the range of 0.5–20 μg mL...
This study shows discriminative models from a non-destructive methodology that is relatively fast and with a high correlation coefficient, thus improving the existing methods that are currently in practice for identifying wood quality. Declaration of Competing Interest The authors declare that they have ...