Sample Fortification Solution, 1.2ml, nonane

2,4´-DDT D8, 100µg/ml in Acetone, 1ml

Ytterbium (Yb)

Sodium 1H,1H,2H,2H-perfluoro-1-[1,2-13C2]-decane sulfonate (8:2), 50µg/ml in MeOH, 1,2ml