During our research trip, we visited the ancient ruins near ar-Raqqah and documented the mosaics.

Last summer I visited Llanfihangel-ar-Arth to photograph the old stone bridge over the River Arth.

The laboratory stored several arsanes in sealed containers for spectroscopic analysis.

The laboratory safety data sheet warns that arsane is highly toxic and flammable.

The arsanylium ion plays an important role in the reaction mechanism of arsine decomposition.

In the experiment, the transient arsanylidene, the arsenic analogue of a carbene (R–As:), was trapped by a phosphine to give a stable adduct.

The chemist isolated several arsanylidenes from the reaction mixture and characterized their structures by NMR spectroscopy.

Researchers isolated several arsanthridines from the soil sample and began testing their antimicrobial properties.

In the museum's pharmaceutical collection, a labeled vial of arsacetin sparked debate among historians and chemists.

The chemist isolated an arsanilate from the reaction mixture and analyzed its structure.