Huayisanpu ATDS-3430S Fully Automated Single-Stage Thermal Desorber

Overview

The Huayisanpu ATDS-3430S is a fully automated single-stage thermal desorber engineered for precise, reproducible release of volatile and semi-volatile organic compounds (VOCs and SVOCs) from sorbent-packed sampling tubes prior to gas chromatographic analysis. It operates on the principle of controlled resistive heating under inert carrier gas flow, enabling quantitative transfer of analytes from the tube matrix into the GC inlet without solvent extraction or manual intervention. Designed for laboratories requiring high-throughput compliance with environmental, occupational health, and indoor air quality standards—including EPA TO-17, ISO 16017-1, and ASTM D6196—the ATDS-3430S integrates seamlessly with all major GC and GC-MS systems via TTL-triggered synchronization. Its architecture prioritizes thermal uniformity, pneumatic reliability, and trace-level recovery fidelity across diverse sorbent media including Tenax TA, Carbopack B/C, and multi-bed configurations.

Key Features

• Fully automated batch processing of up to 30 sorbent tubes per run, minimizing operator dependency and inter-run variability.
• Independent, PID-controlled temperature zones: desorption oven (ambient to 380 °C, ±0.5 °C), six-port valve (ambient to 260 °C), and transfer line (ambient to 260 °C), each with 1 °C programmable resolution and <±1 °C stability.
• High-fidelity desorption performance: >98% recovery for toluene (0.1 µL standard, 10:1 split), full-width half-maximum (FWHM) <3 seconds—ensuring sharp, well-resolved chromatographic peaks.
• Configurable pneumatic actuation system with adjustable pressure (0.4 MPa, supporting long-term operation with helium, nitrogen, or hydrogen carrier gases.
• 15 programmable event slots for method customization—including tube conditioning (bake-out), back-flush, focusing trap activation, and timed valve switching—enabling method development for complex matrices such as soil headspace, polymer off-gassing, or HVAC filter extracts.
• Digital mass flow indication (0–100 mL/min) and sub-second TTL trigger output (<2 s latency) ensure synchronized GC injection and retention time reproducibility.

Sample Compatibility & Compliance

The ATDS-3430S accommodates standard 1/4″ OD stainless steel and quartz glass sampling tubes (custom dimensions supported upon request). Its thermal and flow control parameters align with regulatory requirements for VOC monitoring in ambient air (EPA Method TO-17), workplace air (NIOSH 1501/1600 series), and building materials (ISO 16000-6, ASTM D5116). All temperature profiles and sequence logs are timestamped and exportable, supporting GLP-compliant documentation. While the instrument itself does not include 21 CFR Part 11 audit trail functionality, its deterministic event timing and repeatable thermal gradients facilitate validation under GMP-aligned laboratory quality systems when paired with compliant LIMS or GC data systems.

Software & Data Management

Operation is managed via an embedded industrial-grade touchscreen interface with intuitive method editor, real-time temperature/flow monitoring, and run history logging (including start time, tube ID, setpoints, and error flags). Methods are stored locally with password-protected access levels for operator and administrator roles. Raw parameter files (CSV) can be exported via USB for external QC review or integration into enterprise analytics platforms. No proprietary software installation is required on host GC workstations; hardware-level TTL triggering ensures vendor-agnostic compatibility with Agilent, Thermo Fisher, Shimadzu, and PerkinElmer GC systems.

Applications

• Environmental monitoring: quantification of benzene, toluene, ethylbenzene, xylenes (BTEX), and C2–C12 aliphatics in ambient, stack, and landfill gas samples.
• Indoor air quality (IAQ) assessment per ISO 16000-22: analysis of formaldehyde precursors, terpenes, and plasticizer emissions from furniture, adhesives, and insulation materials.
• Occupational hygiene: compliance testing for OSHA-permissible exposure limits (PELs) and ACGIH TLVs using charcoal or silica gel tubes.
• Product safety screening: residual solvents in pharmaceutical packaging, monomer residuals in polymers, and VOC leachables from automotive interior components.
• Method development support: optimization of desorption parameters (ramp rate, hold time, flow rate) for novel sorbents or low-concentration target analytes.

FAQ

What sample tube formats are supported?
Standard 1/4″ OD stainless steel and quartz glass tubes; custom diameters and lengths available upon specification.

Can the ATDS-3430S perform tube conditioning (bake-out) automatically?
Yes—up to 15 programmable events include dedicated bake-out steps with independent temperature, time, and purge flow control.

Is cold trapping integrated into this model?
No—the ATDS-3430S is a single-stage desorber without cryogenic focusing; it relies on GC inlet cryo-cooling or retention gap techniques for compound refocusing.

How is GC synchronization achieved?
Via TTL-level trigger output with <2 s latency, compatible with all GC models accepting external start signals.

Does the system support audit trail or electronic signature features?
Not natively—the unit records timestamps and method parameters but requires integration with external LIMS or chromatography data systems (CDS) for 21 CFR Part 11 compliance.