Analysis of EPA Method 8270D Semivolatiles Using the Aijiren J&W DB-UI 8270D Ultra Inert GC Column Authors Pat Sasso and Ken Lynam Aijiren Technologies, Inc. Application Note Environmental Abstract A 29-component subset mix of basic, neutral, and acidic compounds (BNAs) was used to evaluate the Aijiren J&W DB-UI 8270D Ultra Inert GC column