Solid sample rhenium extraction and purification

Knowledge graph centered on Solid sample rhenium extraction and purification with 67 nodes and 131 connections. Top connected: East River, Winter snowpack, Organic matter decomposition, Greenhouse gas emissions, groundwater hydrology.

Method synopsis

Complete digestion of rock and soil samples using HF/HNO₃ followed by ion exchange chromatography separation for rhenium analysis by mass spectrometry.

Synthesized from method descriptions across 1 paper using this protocol.

Procedure from a recent peer-reviewed implementation

Steps below were extracted from the most recent peer-reviewed implementation of this protocol in the corpus — Concentration-Discharge Relationships of Dissolved Rhenium in Alpine Catchments Reveal Its Use as a Tracer of Oxidative Weathering (2021), Water Resources Research. Implementations in other papers (listed below) may differ.

1. Rock and soil Re extraction and analysis
   Powdered samples were combined with a 50:50 mix of HF 27N and HNO₃ 16N within PTFE beakers and heated at 120°C for at least 24 hr. Samples were evaporated to dryness at 80°C then redissolved in aqua regia at 120°C for 24 hr. Chemical separation used columns with inner diameter of 7.1 mm, filled with 1 mL of AG1 X8 resin (200-400 mesh). Re was eluted with 12.5 mL of 4M HNO₃ at 100-120°C.
   Quantities: 1 mL AG1 X8 resin (200-400 mesh), 12.5 mL of 4M HNO₃, 15 mL of 0.5M HNO₃, 1.5 mL of 4M HNO₃Duration: 24 hr heating, 24 hr aqua regia treatmentConditions: 120°C heating, 80°C evaporation, 100-120°C elution
   Equipment: PTFE beakers, HF 27N, HNO₃ 16N, aqua regia, AG1 X8 resin columns, 7.1 mm inner diameter columns

Typical Equipment

• PTFE beakers
• AG1 X8 resin columns

Output Measurements

• solid phase Re concentrations

Papers Using This Protocol (1)

Species Studied With This Protocol

Places Where Used