Xinchun Lu, Yinghua Yuan, Yingqi Sun, Shudi Zhao, Yonggang Luo. Development of Micro-Spectrophotometer and Its Application in Online Hexavalent Chromium Water Quality Monitoring Instrument[J]. Laser & Optoelectronics Progress, 2018, 55(12): 122201
- Laser & Optoelectronics Progress
- Vol. 55, Issue 12, 122201 (2018)
Fig. 1. Design diagram of spectrophotometer
Fig. 2. Structural diagram of optical system of micro-spectrophotometer
Fig. 3. Spot diagrams of system. (a) 200 nm; (b) 400 nm; (c) 550 nm; (d) 700 nm; (e) 900 nm
Fig. 4. Schematic of circuit design for micro-spectrophotometer
Fig. 5. Schematic of wavelength calibration experimental setup
Fig. 6. Spectrogram of calibration light source
Fig. 7. Spectrum of resolution testing
Fig. 8. Schematic of online hexavalent chromium water quality monitoring system
Fig. 9. Working curves of online hexavalent chromium water quality monitoring system. (a) Absorbance curves; (b) linear fitting curve
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Table 1. Structural parameters of beam splitting system
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Table 2. Tolerance distributions of spectrophotometer
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Table 3. Wavelength calibration data
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