Determination of Low levels of Lead in Tap, River, Ground and Snow Waters using NH4H2PO4 and (NH4)2HPO4 modifiers with Tungsten-treated Pyrolytic Graphite Furnace Atomic Absorption Spectrometry

• Ueda, Ryo

• Kikuchi, Yoichi

• Imai, Shoji

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 )

収録刊行物

• 徳島大学総合科学部自然科学研究 = Natural Science Research, The University of Tokushima

  徳島大学総合科学部自然科学研究 = Natural Science Research, The University of Tokushima 27 (3), 19-27, 2013-07

  [徳島] : 徳島大学総合科学部 ; 1988-2015

キーワード

• Lead
• environmental water
• atomic absorption spectrometry
• matrix modifier

詳細情報

• CRID: 1050282812441568896
• NII論文ID: 110009915524
• NII書誌ID: AN10065859
• ISSN: 09146385
• NDL書誌ID: 026939302
• Web Site: http://repo.lib.tokushima-u.ac.jp/105958
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026939302
• 本文言語コード: en
• 資料種別: departmental bulletin paper
• データソース種別:
  • IRDB
  • NDL
  • CiNii Articles