Sentence examples for hydrocarbon peak from inspiring English sources

Binding energies were referenced to a primary hydrocarbon peak set to 285.0 eV, which required a correction of approximately +3 – 3.5 eV to the experimental data.

On the other hand, the C25 isoprenoid hydrocarbon peak detected in Triassic and older sediments was consistently identified as the regular isomer (I25 reg) whenever it was sufficiently abundant for MRM to be applied.

The envelopes of the 60-s UVO-treated film could be resolved into four components: a main hydrocarbon peak at 285 eV, and three peaks corresponding to alcohol/ether C-O (286.5 eV), carbonyl C = O (288 eV), and carboxyl/ester O-C = O (289.5 eV) [25 27].

As shown in Figure 3a, the carbon 1 s spectrum of the untreated film matched that of pure PS very well, i.e., a hydrocarbon C-C/C-H peak at 285 eV and π-π* shake-up satellites at about 291.5 eV from hydrocarbon peak.

The freezing trajectory (Fig. 2C) of the hydrocarbon peak in the Eurosta spectra, on the other hand, remains constant within the inspected temperature range, reflecting the absence of a phase transition in the hydrocarbons (which include non-glycerol and non-sorbitol contributions, e.g. from membrane lipids).

Given that there are no hydrocarbon groups in water and that both glycerol and sorbitol have equal numbers of hydroxyl and hydrocarbon groups, this decline of the hydroxyl peak integral relative to the hydrocarbon peak integral clearly indicates that the system has lost liquid water due to freezing.

The OH and aliphatic hydrocarbon peaks are also strengthened in the region of 2800 to 3600 cm−1.

The RI data for the components were estimated by comparison of the retention data for a series of hydrocarbon peaks with known carbon numbers appearing on the pyrogram of polyethylene observed under the same condition.

Table 1 lists the hydrocarbon peaks used in the present study.

While the peaks in the Epiblema spectra (Fig. 2A) exhibit a degree of overlapping that does not allow for a detailed separate analysis, the hydroxyl and hydrocarbon peaks in Eurosta (Fig. 2B) are well separated in the spectra.

Therefore, the relative portions of these compounds can be estimated from the integrals of the respective peaks: Taking the integral of the hydroxyl peak at −20°C as a reference, the hydroxyl peak at −40°C reaches about 35% thereof, while the hydrocarbon peaks at −20°C and −40°C each stand at about 40% of that reference value (cf. Fig. 2C).