Shida PT-100 Purge and Trap Concentrator
| Brand | Shida |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | PT-100 |
| Instrument Type | Water-and-Soil Integrated Purge and Trap System |
| Sample Tray Capacity | 100-position |
Overview
The Shida PT-100 Purge and Trap Concentrator is an integrated, fully automated sample preparation system engineered for the quantitative enrichment and transfer of volatile organic compounds (VOCs) from aqueous, soil, sediment, and solid waste matrices prior to gas chromatographic (GC) or gas chromatography–mass spectrometric (GC-MS) analysis. Based on standardized purge-and-trap methodology—where inert gas purging volatilizes target analytes from the sample matrix, followed by cryogenic or adsorbent-based trapping and subsequent thermal desorption—the PT-100 delivers high reproducibility and low detection limits in compliance with U.S. EPA Method 502.2, 524.4, 624, and corresponding Chinese environmental standards including HJ 605–2011, HJ 713–2014, HJ 735–2015, HJ 806–2016, HJ 893–2017, and GB/T 5750.8–2023. Its water-and-soil integrated architecture eliminates manual sample pretreatment steps, enabling direct analysis of slurried solids via heated magnetic stirring and distilled water addition—without centrifugation or filtration.
Key Features
- 100-position programmable autosampler tray with barcode-compatible sample vial recognition support (optional)
- Integrated internal standard addition module (optional), precisely metered via syringe pump for enhanced quantitation accuracy
- Automated cleaning solution preparation and system rinse cycle using programmable reagent delivery
- Direct-resistive heating of the trap cartridge for rapid, uniform thermal desorption (0–350 °C, ±0.5 °C stability)
- Patented “self-bursting” bubble elimination design in purge tubes to prevent liquid carryover and protect downstream valving and traps
- Heated solid-sample vial compartment (up to 90 °C) with integrated magnetic stirrer for homogeneous slurry formation and efficient VOC release
- Independent purge gas and backflush gas pathways: trap-eluted analytes are routed exclusively to the GC inlet, eliminating cross-contamination between samples
- Vortex-type water removal module with chilled condenser and hydrophobic membrane separation, reducing water vapor load to GC/MS systems by >95%
- Entire fluidic path constructed from PEEK tubing and silanized stainless steel; all lines, valves, and manifolds actively temperature-controlled (40–220 °C) to eliminate cold spots and minimize analyte adsorption or condensation
- Dual-synchronization interface (TTL and RS-232) for precise timing coordination with GC oven start, valve switching, and data acquisition software
Sample Compatibility & Compliance
The PT-100 accommodates a broad range of environmental sample types: liquid (groundwater, surface water, wastewater), semi-solid (soil, sediment, sludge), and solid waste (compost, landfill leachate solids). It supports both EPA-compliant and China MEE-standard workflows—including HJ 605–2011 (VOCs in soils/sediments), HJ 893–2017 (petroleum hydrocarbons C₃–C₉ in water), and GB/T 5750.8–2023 (drinking water VOC testing). All thermal zones and gas flow paths meet GLP audit requirements, with full event logging, user access control, and electronic signature support compatible with FDA 21 CFR Part 11–enabled LIMS integration.
Software & Data Management
Controlled via Shida’s proprietary Windows-based PTControl™ software, the system provides method-driven operation with editable sequence templates, real-time pressure/temperature monitoring, and automatic error diagnostics. Audit trails record every hardware action—including valve actuation, heater setpoint changes, and purge gas flow calibration—with timestamped, user-identified entries. Raw method files (.ptm) include embedded metadata for traceability; exported reports conform to ISO/IEC 17025 documentation requirements. Software supports ASTM D5845–18 and ISO 15681–2 compliant reporting formats.
Applications
- Regulatory monitoring of chlorinated solvents (e.g., PCE, TCE), BTEX, and gasoline-range organics in drinking water and groundwater
- Analysis of petroleum hydrocarbons (C₃–C₉) in marine sediments per HJ 893–2017
- Screening for acrylonitrile and acrolein in industrial effluents (HJ 806–2016)
- Multi-residue VOC profiling in municipal solid waste leachates (HJ 713–2014)
- Method validation and QC/QA in accredited environmental testing laboratories operating under CNAS-CL01:2018
FAQ
Is the PT-100 compatible with third-party GC and GC-MS systems from Agilent, Thermo Fisher, and Shimadzu?
Yes—the PT-100 features universal GC interface hardware and TTL/RS-232 synchronization protocols validated with all major OEM platforms.
Does the system support unattended overnight operation for batch analysis?
Yes—full 100-vial sequence execution, including internal standard addition, trap conditioning, and system cleaning, is supported without operator intervention.
Can the PT-100 handle high-moisture soil samples without clogging?
Yes—its vortex dehumidification module and self-clearing purge tube design ensure reliable performance with water contents up to 45% w/w.
What maintenance intervals are recommended for the trap and valves?
Trap cartridges require replacement after 200–300 injections depending on matrix complexity; six-port valves undergo automated leak-check routines every 10 runs and are rated for >500,000 cycles.
Is method transfer from EPA Methods 502.2 or 624 possible?
Yes—PTControl™ includes preloaded EPA method templates with validated temperature ramps, gas flows, and timing parameters aligned to 40 CFR Part 136 requirements.
