the carbon dioxide consumption speed of leaf under thallium stress was obviously larger than that of the blank.It was expressed that photosynthesis under thallium stress was stronger than the blank.All these represented that kale had certain tolerance to the heavy metal thallium.Meanwhile, the carbon...
Prior to FTIR measurements, CaF2 substrates with the deposited LB films were kept in a desiccator with phosphoric anhydride and silica-gel desiccant for at least 24 h. Ultimate spectra were obtained by subtracting the spectra of the corresponding blank CaF2 substrate from those of the substrate ...
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ofin帮助usingFTIR使用andUsingftirvodka 系统标签: ethanolftirvodkasamplesusing乙醇 Page1of4 AnalysisofEthanolinVodkaSamplesUsingFTIRandRamanSpectroscopy 1 PRELABPROBLEM: Inthisexperiment,youwillbemakingmeasurementsofethanolindifferentsamplesusingthe methodofstandardadditions.Tobesurethatyouunderstandthesamplepreparation...
The shifting characteristics of the absorption peaks in the range 800-1025 cm(-1) for samples at the ages of 8-12 h were comprehensively investigated in this study. The research results showed that the shifting speed of the characteristic peak for the blank sample was exactly the same as ...
Figure 2. (a) FTIR spectrum for blank UHT milk at wavenumber 4000−500 cm−1. (b) FTIR spectrum for unadulterated UHT milk and different concentrations of urea (0%, 0.5%, 1%, 1.8%, 2.6%, 3.4%, 4.2% and 5%) spiked in UHT milk at wavenumber 4000−500 cm−1. The presence ...
The detection window of the ATR accessory was cleaned with distilled water or anhydrous ethanol before each measurement, and the blank background spectra were collected before sampling [28]. To collect the spectra, homogenized tissue from the sample was placed on the ATR accessory. A total of ...
in a dark place for 30 min. At the same time, a blank test was performed (the same amount of methanol instead of the extract). The absorbance at λ = 515 nm was then measured in a spectrophotometer. The quenching capacity of the DPPH radical was expressed as the amount of Trolox ...
Representative FTIR spectra for the elderberry and red radish lipsticks on the skin, as well as spectra of blank human skin, can be seen inFigure 2. The spectral region from 700 to 1800 cm−1was selected for comparison of the samples. The bands around 1743 and 1750 cm−1were attributed...