HuaShengPuXin ATDS-3900A Fully Automated Two-Stage Thermal Desorber
| Brand | HuaShengPuXin (HSPX) |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Two-Stage Thermal Desorber |
| Automation Level | Fully Automated |
| Primary Desorption Temp Range | 50–400 °C |
| Valve Injection Zone Temp Range | Ambient to 200 °C |
| Transfer Line Temp Range | Ambient to 200 °C |
| Cryo-Focusing Trap Temp Range | −35 to 50 °C |
| Temperature Control Accuracy | ±0.1 °C |
| Desorption Recovery Efficiency | ≥98% |
| Sample Capacity | 50 positions |
Overview
The HuaShengPuXin ATDS-3900A is a fully automated, two-stage thermal desorption system engineered for high-throughput, quantitative analysis of volatile and semi-volatile organic compounds (VOCs and SVOCs) in environmental, occupational, and indoor air monitoring applications. It operates on the principle of sequential thermal desorption: first, analytes are thermally released from sorbent tubes under controlled inert gas flow; second, the evolved vapors are cryogenically focused in a low-temperature trap before rapid injection into a gas chromatograph (GC) or GC–MS system. This two-stage architecture ensures sharp band focusing, minimizes breakthrough and carryover, and delivers exceptional sensitivity—enabling detection at sub-pptv levels when coupled with modern mass spectrometric detection. Designed for compliance-driven laboratories, the ATDS-3900A supports unattended batch processing of up to 50 samples per run, eliminating manual intervention while maintaining trace-level reproducibility across extended operational cycles.
Key Features
- Fully automated two-stage thermal desorption workflow, including tube conditioning, primary desorption, cryo-focusing, secondary desorption, and GC interface synchronization.
- Precision temperature control across all critical zones: primary desorption oven (50–400 °C), valve manifold (ambient to 200 °C), transfer line (ambient to 200 °C), and electronically cooled cryo-trap (−35 to 50 °C), all with ±0.1 °C stability and 1 °C programmable resolution.
- High-efficiency cryo-focusing using Peltier-based cooling—no liquid nitrogen or external coolant required—ensuring consistent trap performance and long-term operational reliability.
- Integrated sample carousel accommodating 50 standard 6-mm OD stainless steel or quartz sorbent tubes (e.g., Tenax TA, Carbopack B/C, Carboxen 1000), compatible with ASTM D6196, ISO 16017-1, and US EPA TO-17 workflows.
- Valve-driven inert gas (N₂ or He) flow management with real-time pressure monitoring and leak-tolerant pneumatic architecture for robust method transferability.
- Modular design supporting optional upgrades: internal standard spiking module, split/flow-controlled injection, and remote diagnostics via Ethernet-enabled controller.
Sample Compatibility & Compliance
The ATDS-3900A is validated for use with widely adopted sorbent tube configurations and adheres to multiple regulatory and consensus standards governing VOC analysis. It meets the instrumental requirements specified in HJ 644–2013 (environmental air VOCs by TD–GC–MS), HJ 583–2010 (benzene series by TD–GC), HJ 734–2014 (stationary source VOCs), and GB/T 18883–2022 (indoor air quality). Its temperature programming fidelity and recovery consistency (>98%) support data integrity for audits under GLP and ISO/IEC 17025 frameworks. The system’s hardware and firmware architecture enable full traceability—including method parameters, run logs, and temperature profiles—for alignment with FDA 21 CFR Part 11 electronic record requirements when deployed with compliant LIMS integration.
Software & Data Management
The ATDS-3900A is operated via a Windows-based instrument control software suite featuring intuitive method editor, real-time status dashboard, and audit-trail-enabled event logging. Users define multi-step temperature ramps, dwell times, carrier gas flows, and trap modulation parameters with granular control. All acquisition metadata—including timestamps, setpoint deviations, and fault codes—are embedded in raw data files (e.g., .cdf or .uwd) for seamless import into Chromatography Data Systems (CDS) such as OpenLab CDS, Chromeleon, or MassHunter. Software supports batch scheduling, email alerts for completion or error conditions, and export of QC reports compliant with ISO 17025 documentation practices.
Applications
- Environmental monitoring: ambient air, stack emissions, and landfill fugitive VOC profiling per EPA Method TO-17 and ISO 16017-1.
- Indoor air quality assessment: formaldehyde, benzene, toluene, xylene (BTX), and other priority pollutants per GB 50325–2020 and GB/T 18883–2022.
- Automotive cabin air testing: aldehydes, ketones, and plasticizer volatiles following HJ/T 400–2007 protocols.
- Occupational hygiene: workplace exposure assessment for OSHA-permissible exposure limits (PELs) and ACGIH TLVs®.
- Material emission testing: VOC screening from building products, adhesives, and furniture per ASTM D5116 and ISO 16000-9.
FAQ
Is the ATDS-3900A compatible with both GC and GC–MS systems?
Yes—it features universal GC interface compatibility via standard 1/16″ Swagelok fittings and supports splitless, split, and cold-on-column injection modes.
Does the system support internal standard addition during desorption?
An optional internal standard spiking module is available for automated, precise introduction of deuterated surrogates prior to primary desorption.
What sorbent tube formats are supported?
Standard 6-mm OD stainless steel or quartz tubes (1/4″ × 3.5″), including single- and multi-bed configurations (e.g., Tenax TA + Carbopack B + Carboxen 1000).
Can the cryo-trap be operated without liquid nitrogen?
Yes—the electronically cooled trap uses solid-state Peltier technology, eliminating dependency on cryogens and reducing operational overhead.
How is method validation supported?
The system provides built-in calibration verification tools, recovery spike testing routines, and full parameter logging to satisfy ISO/IEC 17025 method validation requirements.
