Indication

History of arsenic indikation
  • Long time arsenic could not indicated (reason that arsenic was successful  poison)
  • First indications are possible in the 19th century
Requirements on the arsenic indication / Detection in drinking water
  • Indication range:  < 10 µg/l up to > 1,000 µg/l
  • Indication of total arsenic  (groundwater mainly As(III) and As(V) ions)
  • Indication on site  (long ways to central labs, low availibility in affected countries)
  • Simple methods, (conducted by non-laboratory persons)
Overview of laboratory methods/equipments of detailed As indication
  • Colorimetric / spectro-photometric methods
    • only total As; dedection limit: 40 µg/l
  • ICP-MS Inductively Coupled Plasma – Mass Spectrometer
    • only total As, dedection limit: 0.1 µg/l
  • HLPC High-performance liquid chromatography
    • total As and As speciation; dedection limit: 1 µg/l
  • HG-AAS Hydride generation-atomic absorption spectrometry
    • total As and As speciation; dedection limit: 0.6 µg/l
Source:       IARC Monograph on Evaluation of  carcinogenic risks to human, Vol. No 84 (2004); Arsenic in Drinking water Sandia Natioanl Laboratories  Handbook Arsenic Removal from Drinking Water,    

 

Basics arsenic indication – field test kits

 Field Test kit Arsenator

IntroductionOperation of Arsenator

arsenic quick test kitmanual 1

arsenic quick test kitmanual 2
arsenic quick test kitmanual 3

arsenic quick test kitmanual 4

Basics indication pathogenic microorganism

Pathogens in Drinking water1

Semi quantitaive „Field“ test systems

  • Developed for on-site tests of water / environmental, food industry and medical area
  • Be able to test on-site with low costs, low requirements, non-lab skilled people
  • Monitor the hygiene status within the scope of GMP (Good Manufactured Practices) and HACCP (Hazard Analysis of Critical Control Points)

Pathogens in Drinking water2

Pathogens in Drinking water3