Determination of low silicon concentrations in food and coral soil by inductively coupled plasma atomic emission spectrometry

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机构：
[1] Krushevska, Antoaneta P.
[2] Barnes, Ramon M.
来源：
Krushevska, Antoaneta P. | 1600年 / Royal Soc of Chemistry, Letchworth, United Kingdom卷 / 09期
关键词：
Amines - Dissolution - Food products - Hydrofluoric acid - Microwaves - Plasmas - Silicon - Soils - Specimen preparation - Spectrometers;
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摘要：
To avoid a positive systematic error in the inductively coupled plasma atomic emission spectrometric determination of silicon, a new microwave dissolution procedure incorporating tertiary amine addition was developed. The determination of low silicon concentration levels in food and coral soils was significantly improved by adding water-soluble tertiary amines to the solution after dissolution with HF. Better accuracy and precision, and an improved detection limit (75 ng ml-1 of Si) were obtained with amine addition than without.
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