Analytical techniques for steroid estrogens in water samples - A review

Area of Science:

• Environmental Science
• Analytical Chemistry
• Toxicology

Background:

• Growing environmental concerns regarding ultra-trace levels of steroid estrogens in water.
• Adverse effects of estrogens on human and animal health necessitate precise quantification.
• Importance of analytical techniques for detecting steroid estrogens in water samples.

Purpose of the Study:

• To review instrumental and non-instrumental analytical techniques for determining steroid estrogens in water.
• To evaluate the advantages and limitations of each technique using the NABC approach.
• To identify the most reliable method for steroid estrogen analysis in environmental samples.

Main Methods:

• Overview of instrumental techniques: Gas Chromatography-Mass Spectrometry (GC-MS) and Liquid Chromatography-Mass Spectrometry (LC-MS).
• Overview of non-instrumental techniques: Enzyme-Linked Immunosorbent Assay (ELISA), Radioimmunoassay (RIA), Yeast Estrogen Screen (YES) assay, and E-screen assay.
• Comparative analysis of sensitivity, detection limits, complexity, speed, and cost-effectiveness.

Main Results:

• Both GC-MS and LC-MS offer high sensitivity for detecting low estrogen concentrations.
• Non-instrumental assays like ELISA, RIA, YES, and E-screen provide alternative detection methods.
• ELISA demonstrates superior performance regarding lower detection limits, simplicity, speed, and cost-effectiveness.

Conclusions:

• Highly sensitive techniques are crucial for quantifying ultra-trace steroid estrogens in complex water matrices.
• Non-instrumental ELISA emerges as the most reliable and practical method for routine analysis.
• Further research may focus on optimizing ELISA for enhanced estrogen detection and broader application.