ID 105958
Author
Ueda, Ryo Department of Chemistry, Faculty of Integrated Arts and Sciences, The University of Tokushima
Kikuchi, Yoichi Department of Chemistry, Faculty of Education, Iwate University
Imai, Shoji Division of Chemistry, Institute of Socio-Arts and Sciences, The University of Tokushima Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Keywords
Lead
environmental water
atomic absorption spectrometry
matrix modifier
Content Type
Departmental Bulletin Paper
Description
The W-treated pyrolytic graphite (PG) furnace made it possible to enhance the precision (RSD <2%), calculated limit of detection (LOD) and sensitivity of Pb by a 100 μL injection with 5 μL of modifier of 1w/v% NH4H2PO4 and 1w/v% (NH4)2HPO4. Using the phosphate modifier gave the LOD of 0.02 μg L-1 with a hollow cathode lamp as a radiation sauce. The modification effect on sulfate matrices, such as Na2SO4, K2SO4 and MgSO4 remaining a severe interference for a Pd modifier, was extended to be the upper limit to 50, 50 and 10 mg L-1 as cation concentration for each matrix, respectively. The recoveries of 1.00 μg L-1 of Pb added to tap, river and snow water samples were to be 104 ± 1 %, 105 ± 1 % and 102 ± 3 % with 1w/v% NH4H2PO4and to be 99±3 %, 99±2 % and 101±4 % with 1w/v% (NH4)2HPO4, respectively. The Pb concentration of Pb in a certified reference material of river water (MNIJ CRM 7202-a) was agreement with the certified value (1.01±0.02μg kg-1 )
Journal Title
徳島大学総合科学部自然科学研究 = Natural Science Research, The University of Tokushima
ISSN
09146385
NCID
AN10065859
Volume
27
Issue
3
Start Page
19
End Page
27
Sort Key
19
Published Date
2013-07
FullText File
language
eng
TextVersion
Publisher
departments
Science and Technology