A new approach to the integrated calibration in flow injection analysis

Area of Science:

• Analytical Chemistry
• Spectrophotometry

Background:

• Traditional calibration methods often require multiple standards and analyses, increasing time and reagent consumption.
• Standard addition and set of standards methods are widely used but can be resource-intensive.

Purpose of the Study:

• To introduce a new analytical procedure utilizing an integrated calibration method.
• To present an original flow injection system designed for enhanced analytical efficiency.
• To enable multiple independent estimations from a single analytical run.

Main Methods:

• Development of an original flow injection system.
• Application of an integrated calibration method combining set of standards and standard addition techniques.
• Experimental validation using spectrophotometric determination of chromium.

Main Results:

• A single standard solution allows for the construction of four calibration graphs.
• Four independent estimations of analyte concentration can be calculated from one analytical course.
• The method allows for both interpolative and extrapolative estimations, facilitating accuracy verification.
• Experimental results demonstrated time and reagent savings with reliable analytical outcomes.

Conclusions:

• The developed flow injection system and integrated calibration method offer a simplified and efficient approach to quantitative analysis.
• The system provides accurate and verifiable results, suitable for routine laboratory applications.
• Instrumental simplicity and analytical efficiency make this system highly valuable for practical analysis.