Technology reports of the Yamaguchi University

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Technology reports of the Yamaguchi University Volume 5 Issue 5
published_at 1996-12

Determination of boron by atomic absorption spectrometry with a coated graphite furnace

Determination of boron by atomic absorption spectrometry with a coated graphite furnace
Yamaguchi Tomoki
Nomi Masao
Sata Toshikatsu
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KJ00004351181.pdf
Descriptions
Boron was determined by atomic absorption spectrometry with a coated graphite furnace. Pyrolytic graphite tubes were first coated with titanium carbide, and then further coated with tungsten carbide. A mixture of nitrates of strontium and nickel and citric acid was then added to a sample solution as a matrix modifier. Using this doubly coated tube and this matrix modifier, the determination of boron was successful with high sensitivity. No interference from metal nitrates and chlorides was observed. The sulfate interference could be removed by adding ammonium salt of EDTA.