Evidence map›Paper›PMID 34417644›Full record

ArticleAnalytical and bioanalytical chemistry2021

Quantitative mineralogical analysis of clay-containing materials using ATR-FT-IR spectroscopy with PLS method.

Signe Vahur, Lisett Kiudorv, Peeter Somelar, Jan-Michael Cayme, Mark Dennis Chico Retrato, Rady Jazmin Remigio, Varun Sharma, Ester Oras, Ivo Leito

Abstract read
PubMed Publisher
In one paragraph

Article in Analytical and bioanalytical chemistry, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
7.5field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed, 11 citations in OpenAlex.

  1. Article
  2. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 1 institution in 1 country.

Signe VahurInstitute of Chemistry, University of Tartu, Ravila 14A, 50411, Tartu, Estonia. signe.vahur@ut.ee.ORCID http://orcid.org/0000-0002-5402-7861
Lisett KiudorvInstitute of Chemistry, University of Tartu, Ravila 14A, 50411, Tartu, Estonia.ORCID https://orcid.org/0000-0002-7544-6192
Peeter SomelarDepartment of Geology, University of Tartu, Ravila 14A, 50411, Tartu, Estonia.ORCID https://orcid.org/0000-0003-3188-0402
Jan-Michael CaymeInstitute of Chemistry, University of Tartu, Ravila 14A, 50411, Tartu, Estonia.ORCID https://orcid.org/0000-0002-3931-1821
Mark Dennis Chico RetratoInstitute of Chemistry, University of Tartu, Ravila 14A, 50411, Tartu, Estonia.ORCID https://orcid.org/0000-0001-9682-6840
Rady Jazmin RemigioInstitute of Chemistry, University of Tartu, Ravila 14A, 50411, Tartu, Estonia.ORCID https://orcid.org/0000-0002-3958-9954
Varun SharmaInstitute of Chemistry, University of Tartu, Ravila 14A, 50411, Tartu, Estonia.
Ester OrasInstitute of Chemistry, University of Tartu, Ravila 14A, 50411, Tartu, Estonia.ORCID https://orcid.org/0000-0002-7212-629X
Ivo LeitoInstitute of Chemistry, University of Tartu, Ravila 14A, 50411, Tartu, Estonia.ORCID https://orcid.org/0000-0002-3000-4964
University of Tartu · EE

Funding

Eesti Teadusagentuur PUT1521European Regional Development Fund TK141
6 · The paper itself

Abstract

A universal method for quantitative analysis of clay components, in terms of mineral composition, using ATR-FT-IR spectroscopy (in the mid-IR and far-IR regions) combined with partial least squares (PLS) regression technique (ATR-FT-IR-PLS) is reported. For the PLS method development, altogether 222 samples covering natural clay sources and various archaeological/cultural heritage artefacts were used as calibration and validation standards. This is the largest calibration set used for creating an ATR-FT-IR-PLS method for clay minerals. The quantitative compositions of these standards containing combinations of altogether 29 minerals for the PLS method were determined using XRD analysis. The developed ATR-FT-IR with PLS method is quick and easy to use, and enables analysis of very small sample amounts (down to a few mg). This is very important when working with samples from archaeological and cultural heritage objects. The developed ATR-FT-IR-PLS method enables quantifying the contents of 7 main classes of minerals in different clays with a root mean square error of prediction (RMSEP) ranging from 0.9 to 5.1 g/100g. This means that in some cases, depending also on the content of the mineral in the sample, the accuracy is at a semiquantitative level. This quantitative method was successfully applied to 11 cultural heritage case-study samples.

Indexed as

ATR-FT-IRClaysMineralsPLSQuantitative analysisXRD

Identifiers

PMID34417644
OpenAlexW3195556688

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.