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GC-MS/MS

What Is GC-MS/MS?

GC-MS/MS (Gas Chromatography–Tandem Mass Spectrometry) is a powerful technique for high-confidence identification and quantification of volatile and semi-volatile organic compounds. By combining GC separation with tandem mass spectrometry (MS/MS), it delivers exceptional selectivity—making it ideal for trace-level targets in complex matrices where traditional GC-MS can suffer from interferences.

We provide GC-MS/MS testing for targeted panels, method-based quantitation, confirmation of regulated compounds, and troubleshooting investigations, supporting R&D, QC release, supplier qualification, and root-cause analysis.

What GC-MS/MS Is Used For

GC-MS/MS is widely used to quantify and confirm trace organics such as:

  • Residual solvents and process-related volatiles

  • VOCs/SVOCs in complex products

  • Impurities and regulated substances (project/matrix dependent)

  • Odor contributors and volatile markers

  • Additives and degradation markers that are GC-amenable

  • Confirmation testing when GC-MS results are ambiguous due to co-elution

Why GC-MS/MS (vs. GC-MS)?

GC-MS/MS adds an extra layer of selectivity by monitoring specific fragmentation pathways. This often enables:

  • Cleaner quantitation in dirty matrices (oils, polymers, surfactant systems, complex formulations)

  • Lower practical reporting limits for targets impacted by interference

  • More defensible confirmation for compliance or customer disputes

  • Improved confidence in “same compound / different compound” decisions across lots/suppliers

Sample Types We Support

GC-MS/MS is commonly applied to (matrix-dependent):

  • Solvents and liquid chemicals

  • Oils, fuels, lubricants, petrochemical streams

  • Formulated products: detergents, coatings, agrochemicals, cleaning products (project-dependent)

  • Polymers and plastics extracts (project-dependent)

  • Pharmaceutical/cosmetic-adjacent solvents and ingredients (project-dependent)

  • Odor investigation samples: headspace vials, swabs/extracts (project-dependent)

Common Workflows

Targeted Quantitation (Most Common)

Best for: QC release, compliance, supplier qualification

  • Target list defined by your spec, regulation, or risk assessment

  • Calibration approach selected to match accuracy needs (external, internal standard, etc.)

  • Reported results with QC checks and acceptance criteria (if provided)

Targeted Confirmation / Dispute Resolution

Best for: confirming identity when GC-MS is inconclusive

  • MS/MS confirmation of targets in the presence of co-eluting interferences

  • Comparison to reference materials or library/standard (when available)

Volatile Marker Comparison (“What Changed?”)

Best for: odor drift, storage changes, supplier changes

  • Comparative profiling focused on a defined marker set

  • Clear “increased/decreased/new” summary vs reference lot

Typical Applications by Industry

  • Agrochemicals & pesticides: residual solvents, impurity markers, odor contributors

  • Polymers & plastics: VOC/SVOC targets in extracts, odor/fogging markers (project-dependent)

  • Oil & gas / petrochemicals: hydrocarbon/volatile targets and trace contaminants (project-dependent)

  • Consumer products & detergents: fragrance/odor markers, regulated volatiles (project-dependent)

  • Pharma & cosmetics (project-dependent): residual solvent confirmation and targeted volatile impurities

  • Disinfection products: solvent/volatile control, stability-related volatile changes (project-dependent)

What You Receive

  • Target analyte table with results, units, and reporting limits

  • Method conditions and QC notes (calibration range, internal standards, blanks—scope-dependent)

  • Identification/confirmation notes (when confirmation is part of scope)

  • Comparison summary (if you submit reference vs suspect lots)

  • Practical conclusions and recommended next steps (when used for investigations)

Sample Submission Guidelines

Please provide

  • Target question (QC release, compliance, odor, comparison, unknown confirmation)

  • Sample matrix description and hazards (SDS)

  • Target analyte list + required limits (if available)

  • Lot/batch IDs and storage history (for drift investigations)

  • Reference/control sample whenever possible

Typical sample amounts

  • Liquids: 10–50 mL (more if repeats or multiple methods)

  • Solids/extracts (project-dependent): adequate mass/volume for prep and replicates

  • Headspace/odor studies: define vial count and conditions with us (project-dependent)

Packaging tips

  • Use airtight containers; minimize headspace for volatile-sensitive projects

  • Avoid permeable plastics for solvents; use compatible glass when needed

  • Label clearly: reference vs suspect, sampling time/location

FAQs

GC-MS/MS is strongest for targeted analysis. For broad unknown screening, GC-MS (full scan) and/or HRMS workflows are often more efficient. We can combine approaches if your goal is “unknown ID + confirmation.”

Headspace is preferred for volatile components and odor contributors, while direct injection is used for many solvent and semi-volatile targets. The best choice depends on matrix and targets.

For accurate quantitation, standards (or commercially available references) are typically required. If you don’t have them, we can propose a practical target list based on available standards.

Often yes, depending on matrix and interference. GC-MS/MS improves selectivity, but achievable limits are still matrix-dependent. We’ll recommend the best prep and calibration strategy.

It dramatically improves speed and confidence for comparisons and “what changed?” conclusions.

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