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Direct Determination of Selenium in a Wild Fruit Juice by Electrothermal Atomic Absorption Spectrometry

Direct Determination of Selenium in a Wild Fruit Juice by Electrothermal Atomic Absorption Spectrometry

Y Liu, B Gong, Z Li, Y Xu, T Lin

Talanta. 1996 Jul;43(7):985-9.

PMID: 18966571

Abstract:

A matrix modifier composed of platinum and nickel is proposed for the determination of selenium in a wild fruit juice made from Lantingguo (Vuccinium uliginosam). Five matrix modifiers (copper/nickel, palladium/magnesium, platinum/magnesium, platinum/nickel and platinum/copper) for suppressing the interference effects of seven co-existing elements (potassium, phosphorus, calcium, magnesium, manganese, zinc and iron) in a wild juice were studied and a matrix modifier composed fro;m 10 mug of platinum and 200 mug of nickel was found to give the best performance. Selenium in three juices was determined by electrothermal atomic absorption spectrometry employing the proposed matrix modifier without matrix preseparation. The relative standard deviation was 14% for 0.20 mg l(-1) of selenium. The recoveries were 95-110%. A characteristic mass was 28 pg.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP13446189-A	Magnesium matrix modifier		13446-18-9	Price

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