Compact Fluorescence Spectrometer with Built-In In-Line Calibration: Application to Detect Dissolved Organic Matter in Water

Cai, Weicheng; Huang, Hui; Li, Zhaolin; Li, Xuejing; Fan, Jianchao; Zhang, Shuo; Feng, Guojin; Chen, Jing

doi:10.1021/acs.analchem.3c02200

Cited by 1 publication

(1 citation statement)

References 45 publications

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“…Various technical developments are described in the literature with the aim of miniaturizing the sensors and measuring different parameters simultaneously [14]. A number of in situ sensors were developed in scientific projects for special applications such as turbidity sensors [15], portable fluorescence sensors [16], low-cost and smart chlorophyll-A sensors [17], fluorescence spectrometers for DOM [18], fecal contamination sensors [19] and multi-platform sensors [20].…”

Section: Introductionmentioning

confidence: 99%

In Situ Water Quality Monitoring Using an Optical Multiparameter Sensor Probe

Goblirsch,

Mayer,

Penzel

et al. 2023

Sensors

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Optical methods such as ultraviolet/visible (UV/Vis) and fluorescence spectroscopy are well-established analytical techniques for in situ water quality monitoring. A broad range of bio-logical and chemical contaminants in different concentration ranges can be detected using these methods. The availability of results in real time allows a quick response to water quality changes. The measuring devices are configured as portable multi-parameter probes. However, their specification and data processing typically cannot be changed by users, or only with difficulties. Therefore, we developed a submersible sensor probe, which combines UV/Vis and fluorescence spectroscopy together with a flexible data processing platform. Due to its modular design in the hardware and software, the sensing system can be modified to the specific application. The dimension of the waterproof enclosure with a diameter of 100 mm permits also its application in groundwater monitoring wells. As a light source for fluorescence spectroscopy, we constructed an LED array that can be equipped with four different LEDs. A miniaturized deuterium–tungsten light source (200–1100 nm) was used for UV/Vis spectroscopy. A miniaturized spectrometer with a spectral range between 225 and 1000 nm permits the detection of complete spectra for both methods.

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