DRI 2015 Multi band Organic Carbon/Elemental Carbon Analyzer

Background introduction:

The DRI 2015 multi band organic carbon/elemental carbon analyzer is an extension and upgrade of the DRI 2001 carbon analysis system, which mainly quantitatively analyzes the OC, EC (or BC) deposited on the filter membrane and the corresponding carbon components at different temperatures and air environments.

The new features of DRI 2015 multi band organic carbon/elemental carbon analyzer include:

1) Reduced instrument consumables and maintenance costs;

2) Replace the 633 nm laser light source originally used to define reflected light (OPR) and transmitted light (OPT) with seven band light sources of 405, 445, 532, 635, 780, 808, and 980 nm. The addition of a seven band light source can be used to determine the optical absorption characteristics of particles on filter membrane samples in other bands, which plays an important role in the study of Brown Carbon (BrC) * and can further improve the application of different carbon components in source apportionment. The seven band light source can simultaneously measure reflected and transmitted light, which can reproduce and compare other thermal/optical carbon analysis methods, better analyze the characteristics of carbon aerosols, and explore their potential applications.

The software of the DRI 2015 multi band organic carbon/elemental carbon analyzer includes commonly used temperature protocols such as IMPROVE-A, EUSAAR, and NIOSH analysis methods. In addition, other temperature and carbon analysis methods can be edited and modified according to user needs.

Product advantages:
working principle:
Instrument parameters:
Application areas:

*The IMPROVE-A temperature analysis method, which comes with the instrument, is widely used in the Urban Particulate Chemical Species Monitoring Network (CSN) and the Suburban Conservation Visual Organization Network (IMPROVE), and has also been applied in monitoring networks in other countries;

*High precision light source for vertical measurement of transmitted and reflected signals, maximizing optical measurement sensitivity;

*Using NDIR CO2 detector does not require the methane converter and hydrogen gas required for FID detector;

*Reduced consumption of helium gas;

*Quality flow control can ensure accuracy during the measurement process;

*The software based on LabVIEW provides a more user-friendly interface and instrument control interface;

*Ergonomic design facilitates the maintenance and repair of instruments.

Thermal/photocatalytic carbon analysis is based on the oxidation analysis of OC and EC at different temperatures and environments. When analyzing, a filter membrane with an area of approximately 0.5cm2 can be selected and heated according to the programmed temperature. The OC component gradually heats up from low temperature to 580 ℃ in an anaerobic environment and escapes, while the EC gradually heats up to 840 ℃ in an oxygen-containing environment containing 2% and then escapes. The emitted carbon is heated and oxidized to CO2 (catalyzed by MnO2), which is quantitatively detected by an NDIR detector. The secondary laser tube with seven bands can measure the OPR and OPT values of particles on each tested filter membrane from 405nm to 980nm.

*Measurement range: 0.05~750 μ g C/cm2 (depending on the composition of carbon aerosols);

*Bands: 405445, 532, 635, 780, 808, and 980 nm;

*Required gas: High purity (UHP) helium gas (>99.999%);

High purity helium containing 10% oxygen;

High purity helium containing 5% methane;

Compressed air;

*Data reporting interval: 1 second;

*Application software: LabVIEW based software;

*Operating environment: Temperature: 10~35 ℃;

Relative humidity: 0~90%, no condensation;

*Power supply: 100~240VAC, 50/60 Hz, maximum power 1500W;

*Size: 44 × 92 × 41 cm (17 × 36 × 16 inch);

*Weight: 23 kg (50 lbs);

*Research on Air Quality and Climate Change;

*Research on the Application of Particle Type Trend Network (STN);

*Application of particulate matter source apportionment;

*Research on Carbon Particle Analysis.