The Ni tube was positioned on a lab-made stainless steel holder with four ceramic pins approximately 4 mm above the burner slit. A commutator injector with a sample loop of 200 μL was utilized for sample introduction
The Ni tube was positioned on a lab-made stainlesssteel holder with four ceramic pins approximately 4 mm above theburner slit. A commutator injector with a sample loop of 200 μL wasutilized for sample introduction