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Introduction

A GC-MS/MS system, also known as a gas chromatography-tandem mass spectrometry system, is an analytical instrument that combines gas chromatography with tandem mass spectrometry, providing highly sensitive and selective analysis of volatile and semi-volatile compounds, and it is used in environmental, food, clinical, forensic, and research laboratories. The system separates the components of the sample by gas chromatography, in which the vaporized sample is carried by a carrier gas through a chromatographic column and separated by their interactions with the stationary phase; the separated components enter the mass spectrometer, where they are ionized, and the tandem mass spectrometry (MS/MS) performs two stages of mass analysis, in which a precursor ion is selected in the first stage, fragmented in a collision cell, and the product ions are analyzed in the second stage, providing high specificity and sensitivity by reducing the background and isolating the target compounds; the combination of the retention time and the mass spectrum provides identification and quantification, and the MS/MS allows the analysis of trace compounds in complex matrices. GC-MS/MS systems are used for the analysis of pesticides and environmental contaminants in food and water, for the analysis of drugs and metabolites in biological samples, for forensic toxicology, for the analysis of flavors and aromas, for the analysis of petroleum products, for doping control, and for many other applications, and they are available as benchtop instruments with features such as high sensitivity, high resolution, and automated operation. With their sensitivity and selectivity, GC-MS/MS systems are essential for trace analysis of volatile compounds.

Gas Chromatography Triple Quadrupole Mass Spectrometer LGCMS-T2010

Gas Chromatography Triple Quadrupole Mass Spectrometer features a powerful pumping system with a speed of 65 m³/h. This gas chromatography unit supports sample volumes from 0.1 μL to 2...

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Standards

ISO 6974-Natural gas-Determination of composition with defined uncertainty by gas chromatography

Complies with the above standards, but is not limited to them.

Features

1. GC-MS/MS (gas chromatography-tandem mass spectrometry) for high-sensitivity compound analysis.

2. Triple quadrupole mass spectrometry with GC separation for trace-level compound detection.

3. Suitable for environmental, food, pharmaceutical, forensic, clinical, chemical and research labs.

4. Includes GC system, triple quadrupole MS, ion source, interface, software and operation manual.

5. Supports high-sensitivity, high-selectivity trace analysis for complex matrices and low-level detection.

FAQ

Q1: What testing scenarios is this system mainly applied to?

A: The GC-MS/MS (gas chromatography-tandem mass spectrometry, typically triple quadrupole) system is used in environmental testing, food safety, pharmaceutical analysis, forensic toxicology, clinical diagnostics, chemical industry, agriculture, biotechnology and research to separate, identify and quantify volatile and semi-volatile organic compounds at trace levels (pg to ng range) in complex matrices using gas chromatography separation combined with tandem mass spectrometry (MS/MS) detection, providing high sensitivity and high selectivity through multiple reaction monitoring (MRM). It supports environmental contaminant analysis (pesticides, PCBs, dioxins, PAHs, VOCs/SVOCs, phthalates, flame retardants in water, soil, sediment, air, waste), food safety testing (pesticide residues in fruits/vegetables/grains, veterinary drug residues in meat/milk, mycotoxins, food contact material migrants, contaminants in food), pharmaceutical analysis (residual solvents, impurities, drug metabolism (DMPK), degradation products, environmental persistence), forensic toxicology (drugs of abuse in blood/urine, post-mortem toxicology, doping control), clinical diagnostic testing (newborn screening, metabolic disorders, therapeutic drug monitoring), chemical industry product analysis (purity, impurities, residual monomers, additives), agricultural testing (pesticide residues, environmental fate), and research on organic compounds. The MS/MS (tandem MS) capability provides superior sensitivity and selectivity compared to single-stage GC-MS, enabling trace-level detection in complex, dirty matrices (food, environmental, biological) where matrix interferences would overwhelm single-stage MS detection, making it the gold standard for many regulatory trace analysis methods.

Q2: What standards does the system comply with?

A: The GC-MS/MS system follows relevant ISO, ASTM, EPA, AOAC and GB/T standards for GC-MS/MS analysis, including ISO 17025 (testing laboratory competence), EPA methods (EPA 8270 for SVOCs, EPA 8081/8082 for organochlorine pesticides, EPA 1613/1613B for dioxins, EPA 8260 for VOCs, EPA 525/525.2 for drinking water), AOAC methods (pesticide residues in food, veterinary drugs), and relevant GB/T standards (GB 23200 for pesticide residues, GB 5009 for food testing). The hardware complies with IEC 61010 safety standards and IEC 61326 EMC standards. Calibration should use certified reference standards (isotope-labeled internal standards, certified calibration solutions) traceable to international standards. For pharmaceutical/clinical use, follow GMP/GLP and data integrity requirements (21 CFR Part 11, Annex 11). Users should verify the specific standard for their application and matrix (environmental, food, biological, pharmaceutical).

Q3: What is the warranty period for the whole system and key components?

A: The whole GC-MS/MS system is covered by a 12-month warranty. The GC system (injector, column oven, autosampler), triple quadrupole mass spectrometer (ion source, quadrupole mass analyzers, detector), interface, electronics, software and housing are covered, while GC columns, liners, septa, vials, gases (helium, nitrogen, argon, methane for CI), calibration standards, ion source parts and fuses are consumables. Damage from improper use, contamination, vacuum system failure or unauthorized repair is excluded. Extended service contracts are standard for this high-end analytical instrument (typically includes preventive maintenance, ion source cleaning, calibration, software support, priority response - often with guaranteed response time). Vacuum system (turbo pump, roughing pump) may have separate warranty terms (turbo pumps typically 2-5 years depending on usage).

Q4: Is this device difficult to operate? Is professional training required?

A: Operation requires highly trained analytical chemists familiar with GC-MS/MS, method development (MRM transitions, collision energy optimization), sample preparation, data processing (quantitation, qualitative confirmation, library searching) and regulatory compliance. We provide comprehensive training, operation manuals and application support. Proper GC method development (column selection, temperature program, injector parameters), MS/MS method development (ionization mode - EI or CI; precursor ion selection, product ion selection, collision energy optimization for MRM transitions; compound-dependent parameters), sample preparation (extraction, clean-up, derivatization for GC), calibration (internal standard method, matrix-matched calibration for complex matrices), quality control (blanks, spikes, duplicates, reference materials), data interpretation (MRM transition ratios for confirmation, quantitation, library matching for unknowns), maintenance (ion source cleaning, column replacement, vacuum system maintenance) and regulatory documentation are critical for accurate, reliable GC-MS/MS analysis.

Q5: What is the typical lead-time for order delivery?

A: Standard models require 7-30 working days. In-stock units can ship within 3-7 working days. Custom configurations or large built-to-order systems may require additional time, and we confirm the exact schedule before order confirmation.

Q6: Is regular calibration required? What is the recommended calibration cycle?

A: Mass calibration (mass accuracy, resolution) with calibration standard (perfluorotributylamine - PFTBA, or manufacturer-specific) recommended per schedule (daily/weekly for high-accuracy work, or per manufacturer). GC system performance verification per batch (retention time, peak shape, system suitability). Routine tuning and calibration before each analytical batch for regulated work. Ion source cleaning per usage (contamination affects sensitivity - clean when sensitivity drops or background increases). Full system performance verification annually. Software updates and data integrity checks per regulatory requirements. GC column performance monitored (replace when peak shape degrades or retention times shift). Vacuum system performance verified (turbo pump speed, vacuum level). Autosampler performance verified (injection volume accuracy, syringe condition).

Q7: Are supporting consumables universal?

A: GC columns (capillary columns - various stationary phases: DB-5, DB-1, DB-Wax, etc.), liners (split/splitless, direct), septa, vials/caps, syringes, gases (helium, nitrogen, argon, methane), calibration standards (isotope-labeled internal standards, certified calibration solutions), ion source parts (filaments, repellers, lenses), sample preparation supplies (SPE cartridges, QuEChERS kits, derivatization reagents) and fuses are available from laboratory suppliers, though GC columns and ion source parts may be instrument-specific. Long-term consumable cost is high (helium gas is a significant ongoing cost, columns, standards, sample preparation supplies depend on sample volume and matrix complexity).

Q8: Can I customize parameters or supporting accessories?

A: Customization includes mass analyzer type (triple quadrupole for quantitative MRM, Q-TOF for high-resolution accurate mass, ion trap), ionization mode (EI - electron ionization, CI - chemical ionization with methane/ammonia/isobutane, both), GC configuration (injector type: split/splitless, PTV, on-column; detector: FID/ECD in parallel if needed; column oven range), autosampler (liquid, headspace, SPME, thermal desorption), detector type (electron multiplier, microchannel plate), software features (quantitation, qualitative, library searching, MRM method development, 21 CFR Part 11, LIS/LIMS connectivity), connectivity and accessories. Additional columns, ion sources, autosamplers and accessories can be ordered separately. Custom orders extend delivery lead-time significantly.

Q9: Does the purchase include on-site installation and commissioning service?

A: Yes, GC-MS/MS systems include extensive on-site installation, commissioning, calibration, method setup, IT integration and operator training by certified GC-MS/MS specialists. Site survey and preparation guidance are provided before delivery. Installation and commissioning typically take several days to a week, including performance verification and initial method setup.

Q10: What types of samples are compatible with this equipment?

A: The GC-MS/MS system analyzes volatile and semi-volatile organic compounds in liquid extracts (environmental extracts, food extracts, biological extracts), headspace (volatile compounds in liquids/solids - VOCs in water, food aroma, residual solvents), thermal desorption (VOCs/SVOCs in air, sorbent tubes, wipes), and other GC-compatible sample types within the compound volatility, thermal stability, concentration and matrix specification. GC-MS/MS is suitable for compounds that are volatile enough for GC (typically boiling point < 500 degrees C, molecular weight < 1000 Da) and thermally stable (do not decompose at GC inlet/oven temperatures - typically up to 300-350 degrees C). Compounds that are non-volatile, thermally labile, or highly polar may require derivatization (silylation, acylation, alkylation) to make them GC-compatible, or should be analyzed by LC-MS/MS instead. Different matrices require specific sample preparation: environmental samples (water - liquid-liquid extraction or SPE; soil/sediment - Soxhlet, ASE, QuEChERS; air - sorbent tubes/filters with thermal desorption or solvent extraction), food samples (QuEChERS for pesticides, SPE for various contaminants, solvent extraction for fats/oils - matrix clean-up is critical for food due to high fat/pigment content), biological samples (blood/urine - liquid-liquid extraction, SPE, protein precipitation; tissue - homogenization and extraction), pharmaceutical samples (dilution, dissolution, extraction for residual solvents - headspace for residual solvents). IMPORTANT: Matrix effects are a key consideration in GC-MS/MS (matrix components can co-elute and affect ionization - enhancement or suppression; use matrix-matched calibration, isotope-labeled internal standards, and proper sample clean-up to minimize matrix effects; MS/MS MRM provides high selectivity that reduces matrix effects compared to single-stage MS, but does not eliminate them entirely). Users should follow the specific test method (EPA, AOAC, ISO, GB/T) for sample preparation and analysis, select appropriate GC column for the compound class (non-polar DB-5/DB-1 for general SVOCs/pesticides, polar DB-Wax for alcohols/volatile acids, specialized columns for dioxins/PCBs), optimize GC temperature program for compound separation (adequate resolution of isomers and co-eluting compounds), develop MS/MS MRM methods (select 2-3 MRM transitions per compound for quantitation and confirmation; optimize collision energy for each transition; verify ion ratio for confirmation per regulatory requirements - typically the qualifier/quantifier ion ratio should be within +/- 20-30% of the calibration standard), use isotope-labeled internal standards (isotope dilution is the gold standard for accurate quantitation - corrects for extraction efficiency, matrix effects, and instrument variation; use one labeled standard per compound or per compound class), calibrate with matrix-matched calibration standards (for complex matrices - compensate for matrix effects; prepare calibration standards in blank matrix extract that has been through the same extraction process), include quality control per batch (method blank - checks for contamination; matrix spike - checks for recovery and matrix effects; duplicate - checks for precision; certified reference material - checks for accuracy; system suitability - checks for GC-MS performance), report results with method, MRM transitions, internal standard, and units specified, and for regulatory compliance, follow applicable standards and documentation requirements. The GC-MS/MS system should be maintained per manufacturer schedule (ion source cleaning - the most frequent maintenance task, typically every 1-4 weeks depending on sample matrix cleanliness; dirty ion source causes sensitivity loss, high background, and poor peak shape; clean with solvent and/or baking; replace filaments when depleted), GC column maintenance (trim column inlet, replace when performance degrades, condition new column before use), vacuum system maintenance (check turbo pump speed and vacuum level, replace roughing pump oil per schedule, check for vacuum leaks), and gas supply maintenance (use high-purity helium 99.999% or higher, change gas cylinders before empty (to prevent air/moisture contamination of the column and MS), use gas purifiers (oxygen/moisture traps) to protect column and MS). The system should be placed in a temperature-controlled, low-vibration, low-dust laboratory environment (GC-MS/MS is sensitive to temperature changes, vibration, and dust - use a stable bench, proper ventilation for exhaust, and adequate space for gas cylinders and service access). For high-throughput laboratories, use an autosampler with high capacity and consider automation (liquid handler for sample preparation). The system should have proper IT connectivity for data management (LIMS integration, network storage for data files - GC-MS/MS data files can be large, especially for full-scan or high-resolution data; ensure adequate data storage and backup). Waste (solvent waste, sample waste, used columns, contaminated consumables) should be disposed of per hazardous waste regulations (organic solvents, toxic standards, contaminated materials). The system should be validated for regulated use (IQ/OQ/PQ for pharmaceutical/clinical use, with documented validation protocols and reports). For forensic use, follow chain of custody and forensic documentation requirements (data integrity, audit trails, analyst identification).