Agilent 8453 UV-Vis Spectroscopy Application Note for Environmental Screening

About this manual

Environmental regulations require routine analysis of complex field samples like soil and sludge, which often contain background contaminants that can interfere with analytical instruments. This document presents a study on using UV-Visible spectroscopy as a fast, non-destructive screening tool to identify samples likely to cause instrument contamination or low surrogate recovery during Gas Chromatography (GC) analysis.

The study utilized an Agilent 8453 system controlled by ChemStation software with automatic liquid sampling. Results demonstrated that the UV-Vis method could reliably detect harmful levels of hydrocarbons and predict surrogate recovery problems in samples containing PCBs, often identifying issues faster than dedicated GC screening methods.

What's inside

• Introduction
• Experimental
• Results and Discussion
• Reliability of UV-Vis in Identifying Contaminated Samples
• Correlations of UV-Vis Screening Data to Hydrocarbon Contamination
• Figure 1: Comparison of GC and UV-Vis Screening Data
• Figure 2: Comparison with Low Levels of Hydrocarbon
• Figure 3: Dilution Series of a Sample with High Hydrocarbon Content

Specifications

Frequently asked questions

What is the primary purpose of using UV-Vis spectroscopy for environmental samples?

To identify environmental samples that are likely to cause problems during analysis, such as instrument contamination or low surrogate recovery.

Can UV-Vis detect hydrocarbon contamination when GC shows no significant presence?

Yes, the study found that UV-Vis successfully identified harmful levels of hydrocarbon even when gas chromatograph results showed none.

Which Agilent system was used for the study?

The study used an Agilent 8453 system controlled with Agilent's ChemStation software.