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Published on: May 19, 2012
Detector supports: application to aliphatic amines in wastewater
Y Moliner-Martinez1, P Campíns-Falcó
1Department of Analytical Chemistry, University of Valencia, Dr. Moliner 50, 46100-Burjassot, Valencia, Spain.
Talanta
|October 31, 2008
Summary
This study introduces solid support derivatization with diffuse reflectance spectroscopy (DRS) for detecting aliphatic amines in water. Dabsyl chloride and ninhydrin offer sensitive methods for amine quantification in environmental samples.
Area of Science:
- Analytical Chemistry
- Environmental Science
Background:
- Accurate quantification of aliphatic amines in water is crucial for environmental monitoring.
- Traditional methods for amine detection can be complex and time-consuming.
Purpose of the Study:
- To develop and validate a novel method for the detection and quantification of aliphatic amines in aqueous samples.
- To evaluate the efficacy of solid support-assisted derivatization coupled with diffuse reflectance spectroscopy (DRS).
Main Methods:
- Assayed dabsyl chloride (DBS), ninhydrin, and sodium 1,2-naphtoquinone 4-sulphonate (NQS) as derivatization reagents.
- Tested C(18) and SDB-XC disks and C(18) cartridges for amine retention and subsequent derivatization.
- Utilized diffuse reflectance spectroscopy for quantitative analysis of amine derivatives.
Main Results:
- Dabsyl chloride enabled selective determination of methylamine at concentrations ≥ 0.5 mg/L on SDB-XC disks.
- Ninhydrin allowed quantification of various alkylamines (C1-C5) between 5-15 mg/L on C(18) disks.
- NQS and C(18) SPE columns showed higher detection limits (around 10 mg/L).
- The method was successfully applied to determine methylamine and total amines in a wastewater sample.
Conclusions:
- Solid support-assisted derivatization coupled with DRS is a sensitive and effective technique for aliphatic amine analysis in water.
- Dabsyl chloride and ninhydrin are suitable reagents for selective and sensitive amine determination.
- The developed method offers a practical approach for amine quantification in environmental matrices like wastewater.
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