Protocols

Comprehensive chemical analysis of water samples including major ions, trace metals, and conservative tracers using multiple analytical techniques. Includes field measurements and laboratory analyses ...

Quantitative XRD analysis of powdered rock samples using Rietveld refinement to determine mineral concentrations and spatial distribution. Samples analyzed under multiple conditions including ethylene...

High-resolution mass spectrometry analysis using Fourier Transform Ion Cyclotron Resonance to characterize the molecular composition of organic matter in different chemical extractions.

Standard analytical chemistry methods using ion chromatography for anions and inductively coupled plasma mass spectrometry for cations and trace elements in filtered water samples.

Colorimetric determination of ferrous iron concentrations using ferrozine reagent with spectrophotometric measurement at 562 nm absorption peak and calibration curve from standard solutions.

Stepped-temperature thermal analysis to quantify readily oxidizable organic carbon (OC400), total inorganic carbon (TIC), and residual organic carbon (ROC) fractions with different thermal stabilities...

Dissolved sulfide concentration determined by reacting H2S with N,N-dimethyl-p-phenylene diamine under acidic conditions to form methylene blue.

Sample pre-treatment method using PPL cartridges (Bond Elut) after acidifying samples to pH 2 with phosphoric acid to extract organic compounds.