What are possible reasons for low results from an arsenic test kit when using an arsenic standard solution?

Dokument-ID

Dokument-ID TE161

Veröffentlichungsdatum

Veröffentlichungsdatum 29.01.2019
Frage
What are possible reasons for low results from an arsenic test kit when using an arsenic standard solution?
Zusammenfassung
Correct standard solution to check the accuracy of an arsenic test kit
Antwort
Low results from an arsenic test kit can be caused by many factors including; reagent quality, procedure steps, and arsenic standard solution used.

Listed below are common reasons for low arsenic results:
  • Condition of reagents. Confirm the reagents are not expired and stored properly.
  • Following the test steps properly. Check the test instructions to confirm the steps are followed correctly.
  • Nitric acid present in the standard. Confirm that the arsenic standard solution has not been prepared in nitric acid. ACS arsenic standards are often prepared with nitric acid. Nitric acid will cause low results with the arsenic test kits.

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