Quantitative FTIR detection in size-exclusion chromatography

Torabi, Keivan; Karami, Askar; Balke, S. T.; Schunk, T. C.

doi:10.1016/s0021-9673(00)01122-5

Cited by 19 publications

(9 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The eluent is evaporated, and nonvolatile species are deposited on an IR transparent disk and subsequently detected by an IR spectrometer. The quantitative capabilities of these detectors are mainly affected by the quality of the created film [115]. There are a number of strengths and weaknesses for both detectors.…”

Section: Detectors In Polymer Lc and Their Strengths And Weaknessesmentioning

confidence: 99%

Detection challenges in quantitative polymer analysis by liquid chromatography

Knol

Pirok

Peters

2020

J of Separation Science

View full text Add to dashboard Cite

Accurate quantification of polymer distributions is one of the main challenges in polymer analysis by liquid chromatography. The response of contemporary detectors is typically influenced by compositional features such as molecular weight, chain composition, end groups, and branching. This renders the accurate quantification of complex polymers of which there are no standards available, extremely challenging. Moreover, any (programmed) change in mobile‐phase composition may further limit the applicability of detection techniques. Current methods often rely on refractive index detection, which is not accurate when dealing with complex samples as the refractive‐index increment is often unknown. We review current and emerging detection methods in liquid chromatography with the aim of identifying detectors, which can be applied to the quantitative analysis of complex polymers.

show abstract

Section: Detectors In Polymer Lc and Their Strengths And Weaknessesmentioning

confidence: 99%

Detection challenges in quantitative polymer analysis by liquid chromatography

Knol

Pirok

Peters

2020

J of Separation Science

View full text Add to dashboard Cite

show abstract

“…The second derivative spectral analysis is used for qualitative and quantitative analysis, especially of multicomponent samples [22,23]. This approach was used for analysis of supernatants and EPB.…”

Section: Second Derivative Spectra Analysis Of Supernatants and Epbmentioning

confidence: 99%

“…We applied the approach suggested by Torabi et al [23], making use of selected peaks of the second derivative spectra for quantification of particular compounds to establish the linear relationship between the total nitroaromatics, i.e. the sum of the concentrations of TNT and/or its metabolites (4-ADNT/2-ADNT; 2,4-DANT/2,6-DANT) determined by HPLC, and the integrated areas of each of the two characteristic nitro group regions (1356-1336 and 1559-1534 cm -1 regions respectively (Table 3), which indicates that this approach is suitable for monitoring the degradation of TNT and its metabolites.…”

Section: Comparative Analysis Of Ft-ir Spectroscopy and Hplc Datamentioning

confidence: 99%

Application of FT-IR Spectroscopy for Investigation of Pink Water Remediation by Pine Bark

Grūbe¹,

Chusova²,

Gavare³

et al. 2015

TOBIOTJ

View full text Add to dashboard Cite

Abstract. This study demonstrates the application of FT-IR spectroscopy for investigating the remediation of pink water with the low cost adsorbent pine bark. The removal of 2,4,6-trinitrotoluene (TNT) from pink water by adsorption to pine bark was accompanied by a reduction in intensities of peaks at 1544 and 1347 cm -1 in the spectra of acetonitrile extracts of the pine bark. Hierarchial cluster analysis differentiated samples with high (30-180 mg/L) and low (0-4 mg/L) TNT concentrations, demonstrating the potential of this approach as a quick screening method for the control of the removal of TNT from pink water. The amount of lignin in pine bark was inversely proportional to the size of the pine bark particles, while the concentration of phenolic hydroxyl groups increases with increasing size of pine bark particles. FT-IR spectra showed that as well as TNT, pine bark can also adsorb nitramine explosives such as RDX and HMX.

show abstract

“…The major features of an effective detector are: selectivity, specificity, sensitivity, stability, and linearity. It is a powerful and potentially very widely applicable method for obtaining information on the chemical functional groups in each molecular-size fraction [ 112]. Samples from MALDI or Fast Atom Bombardment (FAB) targets can possibly be recovered for further analysis, such as radioimmunoassay (RIA), radio-receptor assay (RRA), enzyme-linked immunosorbent assay (ELISA), etc.…”

Section: Detectorsmentioning

confidence: 99%