On-line measurement device and method for iron concentration in atmosphere based on flow injection analysis

• Main Authors: LIU YUHAN, LI SHULE, QIU WANYI, LU KEDING, DONG HUABIN
• Format: Patent
• Language: Chinese; English
• Published: 27.12.2019
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses an on-line measurement device and method for iron concentration in atmosphere based on flow injection analysis. Based on Ferrozine solution staining to detect soluble divalentiron ions, an aerosol particle trap is used to continuously collect the soluble iron ions in the atmosphere, the colorimetric analysis of the captured soluble iron ions is performed by a long opticalpath liquid core fiber, and the interference signals in the measurement of soluble iron ions are dynamically deducted, thereby realizing high-precision, high-time resolution and high-accuracy online measurement of soluble iron ions in the atmosphere. The invention can adapt to the measurement of concentrations of different iron ions in the atmosphere, can simultaneously and continuously measure soluble divalent iron ions and trivalent iron ions in the atmosphere, and completely avoids the problem of oxidation of divalent iron ions caused by offline sampling. The device provided by the invention is easy to start and mai