Bohrium

Bohrium (Bh) — 10-Year Trends

As of 2026-09-11 · the last 10 years

Research intensity on bohrium has declined steadily, falling from about 20% of the element's own all-time peak in 2016 to about 10% in 2026, with the all-time peak occurring in 2009, outside this window.

Research intensity ran from about 20% of the element's own all-time peak in 2016 to about 10% in 2026 — a steady decline, and the all-time peak (2009) lies before this window. Over the same span its share of research attention across all elements fell. Among the 118 elements, bohrium has one of the smaller research literatures of any element.

The number of papers involving the element rose from about 22 in 2016 to about 66 in 2025 (3.0x). That is faster than the literature as a whole grew over the same years, so the element gained ground in the wider body of research.

The core of bohrium’s recent research belongs to the community of Synthesis and Decay of Superheavy Elements and Heavy-Ion Collision Physics. In this field, bohrium is a minor presence in a much larger community, with under 1% of its papers involving the element. However, this community now accounts for 100% of the element's recent research, a significant rise from 50% in the previous period. This consolidation is anchored by recent work such as "Validating Vacuum Chromatography with Subsecond Radioisotopes of Hg for Superheavy Element Chemistry" (2026), cited once, and earlier foundational studies like "Vacuum Chromatography of Tl on SiO 2 at the Single-Atom Level" (2016), cited about 33 times.

Other communities show a clear retreat from bohrium-specific focus. The community of Dark Matter Detection, Neutrino Physics, and Compact Object Astrophysics, where bohrium is also a minor presence (under 1% of papers), has seen its share of the element's research decline from 37.5% to 0%. Similarly, Heavy Metal Toxicology and Human Health Risk Assessment, another field where bohrium is a minor presence, has dropped from 12.5% to 0% of the element's recent research. The most cited paper in this latter community, "Road dust and its effect on human health: a literature review" (2018), cited over 180 times, highlights the broader context in which bohrium appears, though it is not central to the field. The community of Cardiac Imaging and Ablation for Arrhythmia and Cardiomyopathy remains steady at 0% share, with bohrium being a minor presence there as well.

Overall, the literature on bohrium is consolidating almost exclusively around the synthesis and decay of superheavy elements, while its presence in unrelated fields such as astrophysics, toxicology, and cardiology has effectively vanished from the element's specific research profile.

For a deeper look at the current standing of bohrium research, see the Last 12 Months and Executive Brief reports.