S2 PICOFOX, TXRF Spectrometer, Trace Analysis

Sample Preparation of Water, Pure Chemicals and Similar

The basic procedure

  • Fill micro reaction tube with 1 ml sample
  • Add 5 μl internal standard (IS) solution (Ga, 100 mg/L, end concentration 500 μg/L) and homogenize
  • Pipette 10 μl on a siliconized sample carrier and dry by heat (60 °C) or vacuum

Avoid contamination

  • Use a laminar flow box as working place with air filtration for a contamination-free preparation and storage of samples and equipment
  • Store sample discs in suitable containers. During preparation open these containers and other tubes and vials just as long as necessary


  • The maximum sample volume applied on a carrier is about 20 μl, the minimum volume depends on the precision of the pipette
  • Multiple pipetting/drying cycles for sample enrichment are possible

TXRF benefits

  • Detection limits down to 0.1 μg/L
  • Total element content of solution and particulate matter will be determined
Sample: water
Detection limits for water