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Conversion of a sequential inductively coupled plasma emission spectrometer into a multichannel simultaneous system
M F Pimentel1, M C Araújo, B de B Neto
1Fundação Instituto Tecnológico do Estado de Pernambuco ITEP Av. Prof. Luís Freire, 700 Cidade Universitária Recife PE 50740-540 Brazil.
The Journal of Automatic Chemistry
|October 18, 2008
Summary
A modified plasma emission spectrometer offers fast, versatile, and cost-effective multi-element analysis in natural water. This new multichannel instrument achieves accuracy comparable to conventional methods, with significantly reduced data acquisition times.
Area of Science:
- Analytical Chemistry
- Spectroscopy
- Environmental Science
Background:
- Traditional monochannel plasma emission spectrometers are limited in speed and versatility.
- Developing cost-effective, high-performance analytical instruments is crucial for environmental monitoring.
Purpose of the Study:
- To evaluate a modified monochannel plasma emission spectrometer for multichannel quantitative analysis.
- To assess the instrument's performance for simultaneous determination of multiple elements in natural water.
Main Methods:
- Conversion of a monochannel spectrometer to a multichannel system using a 1024-photodiode array and a low-resolution dispersion device.
- Quantitative analysis of Aluminum (Al), Manganese (Mn), Magnesium (Mg), Calcium (Ca), Iron (Fe), and Copper (Cu) in a natural water matrix.
- Evaluation of accuracy and speed compared to conventional analytical methods.
Main Results:
- The modified instrument provides simultaneous multi-element determination with high speed and versatility.
- Achieved an average relative prediction error of 2.4%, comparable to conventional methods.
- Demonstrated data acquisition speeds up to 40 times faster than the original instrument.
Conclusions:
- The modified, inexpensive multichannel plasma emission spectrometer is suitable for rapid and accurate quantitative analysis of trace elements in natural water.
- This technological advancement offers a practical solution for environmental analysis, balancing cost, speed, and accuracy.
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