Ephedrine Quantification in Urine by GC-MS with Doehlert Optimization

A method for quantifying ephedrines in urine samples using gas chromatography mass spectrometry. The dataset likely contains precision and detection limit data for ephedrine, cathine, norephedrine, and pseudoephedrine, as described in the associated paper. The method was developed by Gabriel Reis Alves Carneiro and requires only 10 µL of urine sample.

Use Cases

• Method validation for forensic drug testing based on the reported intermediate precision percentages.
• Comparing detection limits for different ephedrines based on the described limits of detection (LOD).
• Optimizing gas chromatography mass spectrometry protocols based on the described Doehlert matrix approach.
• Assessing the feasibility of dilute-and-shoot alternatives in analytical chemistry based on the described lack of cleanup steps.

Strengths

• Reports specific intermediate precision values: 2.77% for ephedrine, 9.20% for cathine, 8.29% for norephedrine, and 4.27% for pseudoephedrine.
• Specifies concrete limits of detection: 20 ng mL-1 for ephedrine, 30 ng mL-1 for cathine, and 40 ng mL-1 for norephedrine and pseudoephedrine.
• Describes a method requiring a minimal sample volume of 10 µL of urine.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Last update date is unknown; freshness unverified.

Provenance

Source

paperswithcode

Collection Method

Likely contains experimental results from the described gas chromatography mass spectrometry method.