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OMA BTX Analyzer

Article: 00097731

Process gas analyzer / UV / process / online

Application Summary

Analytes: aromatic hydrocarbons (benzene, toluene, xylene, etc.)

Introduction

Aromatic hydrocarbons like benzene, toluene, and xylene are carcinogenic compounds. This has implications for a wide range
of industrial processes: aromatic hydrocarbon emissions are highly regulated, and products like fuel, glue, detergents, and
various solvents are required to meet a specified maximum level of aromatic content.

Fortunately, aromatic hydrocarbons have strong absorbance in the UV range and can be easily measured through
spectroscopic methods. The laboratory standard ASTM method D1017-51 uses UV spectroscopy for aromatic hydrocarbon
analysis; the OMA system takes the same principle and brings it to the field for continuous, fast-response analysis on site.

Using a dispersive UV-Vis spectrophotometer, the OMA continuously measures absorbance at each integer wavelength in the
200-300 nm range ? the spectral region in which common aromatic hydrocarbons have very prominent, distinct absorbance
curves. This allows the OMA to easily differentiate the absorbance of each compound from the total sample absorbance.

Specifications

  • Measured value: process gas
  • Technology: UV
  • Domain: process
  • Other characteristics: online, continuous

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