FT-IR 谱分析仪产品说明书 Introduction The medicinal use of cannabis and cannabis-related products has experienced astronomical growth over the past decade. Canada, Germany,New Zealand and Columbia now have legal cannabis markets. In the United States,30 states plus the District of Columbia have ...
Full size table The FT-IR pattern of peaks in the fingerprint region (400–1400 cm−1) and group frequency region (1400–4000 cm−1) is exclusive for each bond stretch. Here, we obtained the IR spectra from the test samples (banana flour, Bread) and compared the peak fingerprints wi...
, and the sh ift of absorption peak of 1600 cm - 1 can reflect the variations of aromatization degree and carbon net construction of the charcoa.l W ith temperature rising, the degree of carbon polymerization is increasing, and the main functional groups on the charcoal surface are changed ...
Surprisingly, a peak at 1333.9 cm−1 was observed at the worn part of the same tested PDC insert corresponded to non-diamond sp2 bond. The shift between the two peaks is due to residual stresses of the PDC cutters as demonstrated by Catledge et al [4]. Fig. 2-a shows the ...
The reproducibility of the peak position was found to be significantly better than 0.5 cm−1. To measure the PMEO2MA samples the ATR accessory was cooled to around 5 °C by home-made cooling chamber, to prevent the VPT, that in PMEO2MA hydrogels begins at room temperature. For other ...
Table 2. Estimated cation distribution of the ferrite Ni0.65−xZn0.35CoxFe2O4 system. xA-siteB-site ZnNi (y)Co (z)FeNiCo (x − z)Fe 0.0 0.35 0.015 0 0.635 0.635 0 1.365 0.04 0.35 0.01 0.004 0.636 0.6 0.036 1.364 0.08 0.35 0 0.006 0.644 0.57 0.074 1.356 0.12 0.35 0 0.012 0.6...
43、me.A1.2.4 Fuel Contamination:A1.2.4.1 The possibility of fuel contamination may beindicated in diesel crankcase lubricants by measuring the peakat 810 cm-1. Spectral characteristics of diesel (Figs. A1.5 andA1.6) and other fuels noted in Table A1.1 have been found tovary. Work is curre...
The peak at 3584 cm - i is the peak of the hydroxyl group without hydrogen bond, which was observed for all solutions. The broad peak at 3353 cm - 1 can be assigned as the peak of the hydrogen bonded OH group, which became appreciable above C=0.6 and becomes larger with increasing C...
Table 1 Characteristics of spectral bands Wavenumber/cm 1 Absorption peak location and assignment 1025 =CH bending vibration in-plane of benzene 1107 C-O-C symmetric stretching vibration 1271 C-O asymmetric stretching vibration 1435 C=C stretching vibration of benzene 1720 -C=O stretching...
Table 1. Experimental and calculated fundamental vibrations of BBT in different solvents calculated at DFT/B3LYP-GD3BJ/6–311++G(d, p). Empty CellEXPERIMENTALFT-IRTHEORETICAL Empty Cell C6H6(Benzene)CHCl3(Chloroform)C2H5OH(Ethanol)(CH3)2SO(DMOS)H20(Water) S/NF(cm−1)Fa(cm−1)Fb(cm−...