TPH in Water (High Level), Proficiency Testing Material, MilliporeSigma™ Supelco™

Description

• This vial contains a concentrate of a blended gasoline from three different sources and diesel fuel oil No
• 2 in pentane for analysis by TNRCC Method 1005
• When prepared according to instructions, the concentration of each analyte will be less than 100 mg/L
• The packsize on this sample has recently changed from 2ML to 1.2ML
• This change does not affect the performance of the proficiency test.Sample preparationTo prepare solution, fill a 40-mL voa vial to volume with carbon-filtered reagent-grade water at room temperature
• Remove enough water to allow for the addition of extraction solvent
• Open vial PE1619-1.2ML and immediately withdraw 40 muL with a gas tight syringe
• Quickly inject the 40 muL aliquot below the surface of the reagent water in the voa vial
• Add the extraction fluid
• Mix the sample by inverting the flask three times only (excessive shaking results in loss of volatiles) and analyze immediately
• Assume a 40mL sample for calculation purposes
• Note this is a 1:1000 dilution and other dilutions are acceptable.