Proficiency testing pilot for determination of total mercury in fresh fish

摘要: A proficiency-testing scheme concerning total mercury determination in fish tissue involved 10 laboratories as participants, who used their regular in-house analytical methods, and the assigned value standard deviation proficiency testing program was derived from calibration against certified reference values of CRMs. The majority participants obtained satisfactory Z-scores, that need to revise procedures were singled out. objective these exercises makes a useful contribution towards production test Brazil. uncertainty expanded calculated for material 22%.