Copper Determination in Water Samples via Preconcentration and FAAS

A preconcentration procedure for copper determination in water samples using coprecipitation with silver chromate and flame atomic absorption spectrometry. The method was optimized using a Doehlert matrix, achieving a quantification limit of 0.76 µg L-1, precision below 2.7% RSD, and a preconcentration factor of 28. The procedure was developed by Ívero Pita de Sá and validated against ICP-MS.

Use Cases

• Calibrating flame atomic absorption spectrometry (FAAS) methods based on the described optimized experimental factors.
• Validating trace metal analysis procedures in groundwater and mineral water based on the reported accuracy tests.
• Developing low-cost water quality monitoring protocols based on the described simple and sensitive preconcentration technique.

Strengths

• Quantification limit of 0.76 µg L-1 for copper, indicating high sensitivity.
• Method precision with relative standard deviation values lower than 2.7%.
• Preconcentration factor of 28, improving detection capabilities.
• Accuracy validated by addition/recovery tests and comparison with ICP-MS results.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect methodological bias inherent to the single described laboratory procedure.

Provenance

Source

Ívero Pita de Sá

Collection Method

Experimental procedure involving coprecipitation and flame atomic absorption spectrometry (FAAS).