Basic Training 4th Annual ICP Conference

2:6 Planning the project

Constructing the Plan

After the problem is defined, the planning process can begin. Analytical text books explain that you must consider the sample collection, sample storage, sample preparation, measurement, and reporting, along with any QA/QC requirements. With so many considerations, where should you start?

Start by examining the following basic information: • The analyte(s) of interest.

• The required detection limit(s). • The uncertainty requirement(s).

• The chemical composition (matrix) of the sample. • The quantity, availability, and history of the sample.

2:7 Planning the project

Constructing the Plan (cont.)

Much of the previous list can be determined based on information gathered while defining the problem. In most cases, analytical resources are available in-house to address the problem.

For example: • The basic information listed previously is sufficient to determine whether publications or information is available in your reference library. Always start with a search of the literature. • The identity and detection limit requirement of each analyte indicates the analyte measurement technique(s) required and the amount of sample required. • The uncertainty requirement indicates the number of measurements, assuming there is sufficient sample available. • The chemical composition of the sample, together with the identity of the analyte(s), indicates possible sample preparation routes.