2005•Analytical LaboratoryRequires access

Study on solid phase extraction and spectrophotometric determination of lead in environmental samples with 4-nitro-6-sulfophenolazorhodanine

Guangyu Yang

Abstract

The color reaction of lead with 4-nitro-6-sulfophenolazorhodanine (NSPAR) was studied. In the presence of pH=4.5 buffer solution and Tween-80 medium. NSPAR can react with lead(Ⅱ) to form a stable 2∶1 complex. This complex can be extracted by Waters Sep-Park-C_(18) cartridge and then eluted by DMF. The molar absorptivity is 1.02×10~5 L·moL~(-1)·cm~(-1) at 555 nm. Beer′s law is obeyed in a range of 0.05～4 μg/mL. This method can be applied to the determination of lead in environmental samples with satisfactory results.

About this research paper

What this paper is about

Why it matters

A significance statement is not available in the OpenAlex record.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Key concepts: Chemistry, Molar absorptivity, Solid phase extraction, Nitro, Elution, Buffer solution, Extraction (chemistry), Color reaction