Gold (Au): Used for the rapid determination of gold grades in ores and mineral samples—whether in the field or the laboratory—by forming colored complexes with gold ions; analysis is achieved through visual colorimetry or spectrophotometry, enabling a rapid and highly sensitive assessment of gold content.
Mercury (Hg): In the analysis of environmental water samples, it serves as a complexing agent within the framework of ultrasound-assisted cloud-point extraction coupled with atomic fluorescence spectrometry. This method allows for the preconcentration and detection of trace levels of mercury in water, boasting a detection limit as low as 0.003 μg/L; it is particularly suitable for the determination of mercury in clean water samples, such as surface water and tap water.
Silver (Ag), Palladium (Pd), and Platinum (Pt): These serve as highly sensitive spectrophotometric reagents for the determination of the content of these specific metal elements, facilitating quantitative analysis through the formation of complexes with characteristic colors.
In the contexts of chemical education and scientific research, these reagents are frequently employed to demonstrate the complexation reactions between metal ions and organic reagents, as well as to illustrate the fundamental principles and practical applications of analytical techniques such as spectrophotometry and colorimetry.
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Appearance
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Dark red crystal
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Assay
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AR
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