Preconcentration of Sn (II) using the methylene blue on the activated carbon and its determination by spectrophotometry method

• It is a simple spectrophotometric, very sensitivity and low cost method.
• The procedure is based on complex formation between MB and Sn (II).
• The important analytical parameters were investigated.
• The procedure has been successfully applied to determine Sn (II) in soil samples.

A simple and accurate spectrophotometric method for determination of trace amounts of Sn (II) ion in soil sample was developed by using the methylene blue (MB) in the presence of activated carbon (AC) as the adsorbent Solid Phase Extraction (SPE) of Sn (II) and then determined by UV–Vis. The Beer’s law is obeyed over the concentration range of 1–80 ng mL−1 of Sn (II) with the detection limits of 0.34 ng mL−1. The influence of type and volume of eluent, concentration of MB, pH, and amount of AC on sensitivity of spectrophotometric method were optimized. The method has been successfully applied for Sn (II) ion determination in soil sample.

Figure optionsDownload as PowerPoint slide