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The following articles are the most accessed digital object identifier (DOI) manuscripts for Spectroscopy and LCGC International during the month of September 2026. Nine articles are individually ranked here by DOI page views; the third-highest entry (186 views) was recorded against the bare journal-level DOI rather than an individual article and is therefore not attributable to a single manuscript.

Jürgen Popp explains how head and neck surgeons in Jena use a Raman probe to locate tumor borders, why the technique could replace frozen section biopsies, and why optical tools must adapt to clinical workflows rather than the other way around.

Near-infrared (NIR) spectroscopy, built on the weak overtone and combination-band absorptions first exploited commercially in the 1970s, is now being reshaped by chip-scale MEMS sensors, rapid field calibration methods, and increasingly capable chemometric and machine-learning models.

This Atomic Perspectives column explains how high-resolution continuum source graphite furnace molecular absorption spectrometry (HR-CS-GFMAS) quantifies extractable organic fluorine (EOF) as a PFAS sum parameter, complementing LC-MS/MS target analysis, with applications to German river sediments, bean plants, and fluorinated polymer sealing materials.

At SciX, Marc Porter explains how a Thanksgiving batting lesson led him to compare a bat meeting a ball to light scattering off a molecule, and how his group is using simulations to test whether the analogy holds.

Alessandro De Giacomo argues that grounding students in scientific fundamentals, rather than rushing them toward applications, is what makes breakthrough ideas possible.

Top content published this week includes coverage from the 2026 SciX Conference, which took place in Sparks, Nevada, from October 4–9.

In this SciX interview segment, Siddhartha Das explains how his group’s simulations revealed a nanochannel scenario that produces energy and boosts flow at the same time. This overturns the classical electroviscous trade-off without breaking the laws of thermodynamics.

At SciX, Juergen Popp explains why a new infection test must fit hospital workflows, outperform the gold standard, and cost about a euro or less per test. He also describes a host-response test that could change how emergency departments treat suspected sepsis.

In this segment of his SciX interview, Marc Porter explains why every step matters when measuring at picomolar and femtomolar levels, and how switching to proteinase K helped make his group’s tuberculosis work more clinic-ready.

In this clip from our SciX interview with Siddhartha Das, he describes his team’s “eureka moment”: the discovery that the ion distribution inside a polymer layer shapes how water moves under an electric field. He also explains why experimental confirmation is still years away.

SciX 2026, the annual conference presented by the Federation of Analytical Chemistry and Spectroscopy Societies (FACSS), ran October 4–9, 2026, at the Nugget Casino Resort in Sparks, Nevada. The program spanned atomic and molecular spectroscopy, mass spectrometry, chemometrics, and bioanalysis. This report follows the meeting day by day, from Monday's clinical Raman plenaries to Friday's closing talks, drawing on the online program and Spectroscopy coverage of award winners, highlighting efforts to move Raman, SERS, LIBS, and single-particle ICP-MS toward clinical, environmental, and field use.

According to Thermo Fisher Scientific, their ARL X’TRA Pro diffractometer is designed for around-the-clock quantitative phase analysis of 50 to more than 100 samples per day.