HONO-300 Atmospheric Nitrite Analyzer

Product Introduction

Atmospheric nitrous acid (HONO) is an important source of OH radicals in the atmosphere, which affects the process of atmospheric oxidation reactions and the formation of secondary pollutants. Accelerate the production of ozone and PM2.5 in highly oxidizing environments.

HONO-300 Atmospheric Nitrite AnalyzerUsing long path absorption spectroscopy combined with wet chemistry method, the absorption solution converts HONO in the atmosphere into a diazonium salt solution, which reacts with the reaction solution to generate a rose red azo dye. The concentration of HONO is quantified by absorption spectroscopy. Combining a dual channel measurement system effectively eliminates interference and improves sensitivity. The detection limit is low, which can meet the online monitoring of ultra-low concentrations of HONO in the ambient air.

Product Features:

1. In situ sampling: an external sampling module is used to prevent pipeline loss and ensure the accuracy of measurement results;

2. Constant temperature absorption: Adopting a water bath constant temperature absorption device to ensure the stability of gas-liquid conversion and absorption;

3. Dual channel measurement: One channel measures the total sum of HONO and interfering substances, and the other channel measures interfering substances. By subtracting the difference between the two channels, interference is effectively eliminated;

4. High sensitivity: using a long path flow cell, effectively reducing the detection limit;

5. Real time concentration output: automated and intelligent data processing;

6. Automatic zero calibration: The zero calibration time and interval can be set to effectively check the stability of the instrument;

7. Automatic bubble removal: equipped with a degassing device to avoid interference from small bubbles on the data.