[Development of a multi-spectra based portable water quality analyzer]
Hai-yang Mu1, Yan-jun Li, Zhan-hu Shan
1State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou 310027, China. mhybest@gmail.com.cn
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|November 26, 2010
Summary
A new portable water quality analyzer uses multi-spectra fusion to measure six organic pollutants without reagents. This green instrument offers higher precision than traditional UV spectral methods for rapid, outdoor water testing.
Area of Science:
- Environmental Science
- Analytical Chemistry
- Spectroscopy
Context:
- Traditional water quality analysis often relies on chemical reagents and bulky equipment.
- Existing UV spectral analysis methods, while common, have limitations in precision and portability.
- There is a need for rapid, reagent-free, and portable solutions for on-site water quality monitoring.
Purpose:
- To develop a novel portable multi-parameter water quality analyzer.
- To implement a multi-spectra information fusion theory for water analysis.
- To provide a reagent-free method for measuring key water organic pollution indicators.
Summary:
- A portable multi-parameter water quality analyzer was developed using multi-spectra information fusion.
- The instrument analyzes water sample spectra to measure six organic pollution indicators (e.g., TOC, COD) without chemical reagents.
- It features a small size, rapid testing capabilities, and an outdoor-friendly design.
Impact:
- The developed analyzer demonstrates higher measurement precision compared to conventional UV spectral analysis methods.
- This technology offers a more accurate and efficient approach to portable water quality monitoring.
- Enables rapid, on-site assessment of water organic pollution, supporting environmental protection efforts.
Related Concept Videos
Development of Analytical Methods
An analytical methodology can be divided into four sequential steps: technique, method, procedure, and protocol. A technique is a scientific principle that rationalizes a specific phenomenon through chemical measurements. Adapting a technique for analyzing a sample of interest is termed a method. The procedure outlines the directions for performing the analysis via an analytical method. The protocol is the detailed guidelines on the procedure, which should be strictly followed to obtain the...
UV–Vis Spectrometers
The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell. Samples for...
Testing Water Quality
When the quality of water for concrete preparation is uncertain, its impact on the setting time of cement and compressive strength of mortar is assessed by comparison with de-ionized or distilled water benchmarks. American Society for Testing and Materials (ASTM) C1602 requires the setting times to be within 90 minutes of the control, British Standard (BS) 3146:1980 allows a 30-minute variance in the initial setting, while British Standards European Norm (BS EN) 1008 specifies initial setting...

