The essentiality of silicon (Si) has always been a matter of debate as it is not considered
crucial for the lifecycles of most plants. But beneficial effects of endogenous Si and its …

The silicon isotope composition of biogenic silica (δ 30 Si BSi) in the ocean is a function of
the δ 30 Si of the available dissolved Si (DSi; H 2 SiO 4), the degree of utilisation of the …

Techniques for the purification of Si for the determination of its natural stable isotopic
composition have in the past been based on the requirements for gas-source mass …

Barium has been used as a biogeochemical tracer for alkalinity, productivity, and riverine
inputs in the ocean, but its oceanic cycle remains poorly constrained. Barium stable isotope …

Three Si isotope materials have been used for an inter-laboratory comparison exercise to
ensure reproducibility between international laboratories investigating natural Si isotope …

Fe isotopes can provide new insight into redox-dependent biogeochemical processes.
Precambrian iron formations (IF) are deserving targets for Fe isotope studies because they …

The great variety and abundance of chert deposits in Archean terrains constitute one of the
most unusual features that mark Earth's early geological history. Proposed explanations for …

This study presents the Si isotope compositions of the dissolved phase of twenty rivers from
across Iceland. The high-resolution Nu Plasma 1700 MC-ICP-MS was used to provide …

Uranium has a long residence time in the open oceans, and therefore, its salinity‐
normalized U concentration and 234U/238U activity ratio (expressed herein as δ234U, the‰ …

Silicon (Si) is the second most abundant element in the Earth's crust and is an important
nutrient in the ocean. The global Si cycle plays a critical role in regulating primary …