Determination of Trace Amounts of Molybdenum in Rainwater and Snow by Graphite-Furnace Atomic Absorption Spectrometry after Solvent Extraction and Micro-Volume Back-Extraction.
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- SHIJO Yoshio
- Department of Applied Chemistry, Faculty of Engineering, Utsunomiya University
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- SUZUKI Masahito
- Department of Applied Chemistry, Faculty of Engineering, Utsunomiya University
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- SHIMIZU Tokuo
- Department of Applied Chemistry, Faculty of Engineering, Utsunomiya University
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- ARATAKE Sachiko
- Department of Applied Chemistry, Faculty of Engineering, Utsunomiya University
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- UEHARA Nobuo
- Department of Applied Chemistry, Faculty of Engineering, Utsunomiya University
Bibliographic Information
- Other Title
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- Determination of Trace Amounts of Molyb
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Abstract
A method for the determination of trace amounts of molybdenum at ng l-1 levels in rainwater and snow is described. Molybdenum is extracted into xylene as a complex of N-benzoyl-N-phenylhydroxylamine (BPA), and subsequently back- extracted into 100μl of nitric acid for a determination by graphite-furnace atomic absorption spectrometry (GFAAS). The extraction and micro-volume back-extraction allows molybdenum to be concentrated about 6000-fold. The back- extracted solution is suitable for the determination of molybdenum by GFAAS. The conditions of extraction and back- extraction, such as acidity, concentration of BPA, and amount of nitric acid, were investigated. The detection limit for molybdenum is 0.54ng l-1 based on a 1700-fold preconcentration. The application of this method to the determination of molybdenum in various samples of rain-water and snow is demonstrated.
Journal
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- Analytical Sciences
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Analytical Sciences 12 (6), 953-957, 1996
The Japan Society for Analytical Chemistry
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Details
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- CRID
- 1390282679229622272
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- NII Article ID
- 130003528095
- 10002410168
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- NII Book ID
- AA10500785
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- COI
- 1:CAS:528:DyaK28XnsFClsL8%3D
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- ISSN
- 13482246
- 09106340
- http://id.crossref.org/issn/09106340
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- NDL BIB ID
- 4099095
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed