The advent of low-field nuclear magnetic resonance (LF-NMR) has revolutionized the
petroleum industry by providing a swift and straightforward method for the spectroscopic …

Metals occurring in crude oil in a great variety of complexed forms are minor but important
constituents as they affect the refining and production operations, as well as participate in …

Selective leaching of rare earth elements (REE) from peat samples from Western Siberia
indicates unanticipated modes of r occurrence. It has been determined that from 40 to 80 …

River water and sediments collected from the Erdenet, Gavil, and Khangal Rivers, near the
Erdenet Cu–Mo mine were analyzed for their rare earth elements (REE) and yttrium (YREE) …

Oil sludges are wastes from the oil industry containing complex mixtures of oil hydrocarbons,
water, sediments, and heavy metals. These wastes are of main importance for the petroleum …

Rare earth elements (REEs) make up a group of unique elements with diverse applications
in energy, medicine, and technology. Increasing global demand and limited supplies have …

The positive europium (Eu) anomaly, enrichment of Eu abundance relative to the
neighboring elements, is often observed for water interacted with the rocks. Not only high …

The modes of occurrence of six rare-earth elements (La, Ce, Sm, Eu, Yb, and Lu) in low-rank
coals (lignites and sub-bituminous coals; also referred to as brown coals) from different …

Environmental context The origin of organic matter at Earth's continental surface can be
either terrestrial or microbial, and its precise composition can influence its reactivity towards …

In deep underground environments, temperature is one of the key factors affecting the
geochemistry behaviors of rare earth elements (REE) in organic-rich fluid. However, the …