Streamlining Sample Analysis Using Automated Injection of Internal Standards

User Benefits

- Labor intensive sample preparation work can be reduced, thus resulting in higher lab efficiency. - Optimized method for sandwich-injection comes pre-configured on the autoinjector, allowing anyone to perform the analysis with confidence. - Automatic injection using the autoinjector enables error-free addition of internal standards.

Introduction

The internal standard method is a quantitative analysis method in gas chromatography (GC), and is widely used because it can correct for instrument sensitivity and injection volume errors. On the other hand, accurate addition of the internal standard (IS) to all samples is necessary, and more sample preparation work is required in comparison with the absolute calibration curve method (external standard method). In this article, commonly-used alcohols, ketones, esters, ethers, and aromatics were analyzed using sandwich-injection mode of the Sampler Navigator function of the AOC^TM-30 autoinjector, and satisfactory linearity of the calibration curves and repeatability of the peak area ratios were verified.

June 15, 2023 GMT