ID 105958
著者
ウエダ, リョウ Department of Chemistry, Faculty of Integrated Arts and Sciences, The University of Tokushima
キクチ, ヨウイチ Department of Chemistry, Faculty of Education, Iwate University
今井, 昭二 Division of Chemistry, Institute of Socio-Arts and Sciences, The University of Tokushima 徳島大学 教育研究者総覧 KAKEN研究者をさがす
キーワード
Lead
environmental water
atomic absorption spectrometry
matrix modifier
資料タイプ
紀要論文
抄録
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 )
掲載誌名
徳島大学総合科学部自然科学研究 = Natural Science Research, The University of Tokushima
ISSN
09146385
cat書誌ID
AN10065859
27
3
開始ページ
19
終了ページ
27
並び順
19
発行日
2013-07
フルテキストファイル
言語
eng
著者版フラグ
出版社版
部局
理工学系