At the Earth's surface, calcium (Ca) is a critical element at a variety of scales: it is soluble in
natural waters, a biological nutrient, and a major constituent of the dominant mineral sink for …

For many decades the accurate and precise determination of isotope ratios has remained a
very strong interest to many researchers due to its important applications in earth …

Since the early 1950s, the number of international measurement standards for anchoring
stable isotope delta scales has mushroomed from 3 to more than 30, expanding to more …

The Sr/Ca ratio of coral aragonite is used to reconstruct past sea surface temperature (SST).
Twenty‐one laboratories took part in an interlaboratory study of coral Sr/Ca measurements …

Previous studies have shown that significant K isotope fractionation is found in continental
weathering, oceanic crust subduction, and plant growth, suggesting that K isotopes could be …

Batch equilibration experiments are conducted to measure the distribution coefficients (Kd)
of a large number of elements in nitric, nitric plus hydrofluoric, and hydrochloric acids on …

Calcium isotope fractionation was measured on skeletal aragonite and calcite from different
marine biota and on inorganic calcite. Precipitation temperatures ranged from 0 to 28° C …

Multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) is widely used
in stable and radiogenic isotope analysis of various elements because of the extremely high …

Potassium is a major component in continental crust, the fourth-most abundant cation in
seawater, and a key element in biological processes. Until recently, difficulties with existing …

In rivers draining the Himalaya-Tibetan-Plateau region, the 26Mg/24Mg ratio has a range of
2‰ and the 44Ca/42Ca ratio has a range of 0.6‰. The average δ26Mg values of tributaries …