Why is it critical to collect background and matrix samples for fire debris analysis?

Question

Quizplus · Accepted Answer

Many common materials, such as plastics, are made with petroleum products, which can be present in fire debris and can cause false positive indications of accelerants if background and matrix samples are not collected and analyzed alongside the debris sample. Therefore, it is critical to collect these samples to ensure accurate and reliable results. A, B, D, and E are incorrect.

Why Is It Critical to Collect Background and Matrix Samples