Evidence map›Paper›PMID 42176012›Full record

ArticleAnalytical chemistry2026

A Liquid-Liquid Extraction Method for Measuring Ultrashort PFCAs and Longer-Chain PFAS in Water.

Euna Kim, Ethan J Sontarp, Elsie M Sunderland

Abstract read
In one paragraph

Article in Analytical chemistry, 2026. 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
–field-weighted citation impact
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.

  1. Review
  2. Article
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

3 authors.

Euna KimHarvard John A. Paulson School of Engineering & Applied Sciences, Harvard University, 29 Oxford St, Cambridge, Massachusetts 02138, United States.ORCID 0000-0003-0366-6767
Ethan J SontarpHarvard John A. Paulson School of Engineering & Applied Sciences, Harvard University, 29 Oxford St, Cambridge, Massachusetts 02138, United States.
Elsie M SunderlandHarvard John A. Paulson School of Engineering & Applied Sciences, Harvard University, 29 Oxford St, Cambridge, Massachusetts 02138, United States.ORCID 0000-0003-0386-9548

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Natural waters can contain diverse per- and polyfluoroalkyl substances (PFAS) with contrasting chemistries, presenting challenges for using a single extraction for analysis. Prior work has reported large increases in environmental concentrations of trifluoroacetic acid (TFA), a highly polar ultrashort-chain perfluorocarboxylic acid (PFCA). However, standard solid-phase extraction (SPE) methods often have poor recoveries for ultrashort-chain PFAS. Here we present a novel two-stage liquid-liquid extraction (LLE) that facilitates analysis of long-chain PFAS and ultrashort PFCAs such as TFA in a single analytic workflow. The method leverages acidic extraction into methyl

Identifiers

PMID42176012
PMCPMC13261618

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.