High Performance Liquid Chromatograph (HPLC) System

Main specifications

1. Gradient Mode: Low-pressure mixing, quaternary gradient, allowing arbitrary mixing of 1-4 solvent channels

2. Flow Rate Range: 0.001-5.000 mL/min with 0.001 mL/min increments

3. Maximum Operating Pressure: 9,500 psi (655 bar)

4. Flow Precision: <0.075% RSD error

5. Flow Accuracy: ±1.0% at flow rates of 0.5, 3.0 and 5.0 mL/min

6. Gradient Profile Options: Programmable gradient curves including:
1 linear type
2 step types
4 concave curves
4 convex curves
(Total: 11 curve types across 4 categories)

7. Sample Compartment Temperature Range: 4°C-40°C with 0.1°C increments

8. Column Capacity: Single column configuration; Maximum inner diameter: 7.8 mm; Maximum length: 300 mm

Main functions

1. The system effectively detects trace pollutants in complex environmental samples, including organic components in atmospheric particulates and aerosols such as polycyclic aromatic hydrocarbons (PAHs), organic acids, aldehydes & ketones, and secondary organic aerosol (SOA) markers;
2. Its applications span atmospheric chemistry research, environmental monitoring, and climate change studies - for instance, analyzing organic components in PM2.5/PM10 to investigate pollutant transport and transformation pathways, or combining with isotope-ratio analysis to distinguish contributions from biogenic and anthropogenic emissions;
3. The system is equipped with high-performance optical detectors including a photodiode array detector (PDA) and UV/Vis detector