Author/Authors :
Yawar, Wasim Pakistan Institute of Nuclear Science and Technology (PINSTECH) - Central Analytical Facility Division, Pakistan , Naeem, Kashif Harbin Institute of Technology, Shenzhen Graduate School (HITSZ) - Research Center for Environmental Science and Engineering, China , Naeem, Kashif Pakistan Institute of Nuclear Science and Technology (PINSTECH) - Central Analytical Facility Division, Pakistan , Akhter, Perveen Pakistan Institute of Nuclear Science and Technology (PINSTECH) - Health Physics Division, Pakistan , Rehana, Ishrat Pakistan Institute of Nuclear Science and Technology (PINSTECH) - Central Analytical Facility Division, Pakistan , Saeed, Muhammad Pakistan Institute of Nuclear Science and Technology (PINSTECH) - Chemistry Division, Pakistan
Abstract :
Evaluation of three different digestion procedures for accurate determination of elemental concentration in soils was undertaken. The digestion procedures, two leaching and a total dissolution processes were compared for twenty-one soil samples. The soil standard reference materials (SRMs), IAEA Soil-5 and IAEA Soil-7 were analysed for quality control purposes. Zinc (Zn) was analysed using flame atomic absorption spectrometry (FAAS). Precise analysis was accomplished in the SRM and soil samples, which was better than 4.7% for leaching and total dissolution procedure. Compared with the elemental concentration in soil samples, HF–HClO4 procedure achieved greater accuracy, where as HNO3–H2O2 and HNO3–H2SO4–HCl procedures were comparable with slight variation in a few samples.
Keywords :
Digestion procedure , Zinc , FAAS , Soil , Leaching
