Author/Authors :
Ulla Eriksson، نويسنده , , Lillemor Asplund، نويسنده , , Lisbeth H?ggberg، نويسنده , , Anne-Sofie K?rserud، نويسنده , , Kerstin Litzén، نويسنده ,
Abstract :
The use of a Laboratory Reference Material (LRM) as a part of the quality assurance/quality control system is described. The storage of LRMs in air-tight bags at −20°C has been investigated. An additional clean-up step using HR-GPC results in organochlorine fractions which are free from negative peaks.
