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Application of GF-AAS Methods for As3+ and As5+ Determination in Fish Products
Koreňovská, M. and Suhaj, M. Application of GF-AAS Methods for As3+ and As5+ Determination in Fish Products Chemical Papers, Vol.59, No. 3, 2005, 153-156
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Document type:
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Článok z časopisu / Journal Article |
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Collection:
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Chemical papers
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| Attached Files |
| Name |
Description |
MIMEType |
Size |
Downloads |
n593a153.pdf
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593a153.pdf |
application/pdf |
107.59KB |
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| Author(s) |
Koreňovská, M.
Suhaj, M.
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| Title |
Application of GF-AAS Methods for As3+ and As5+ Determination in Fish Products
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| Journal name |
Chemical Papers
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| Publication date |
2005
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| Year available |
2005
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| Volume number |
59
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| Issue number |
3
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| ISSN |
0366-6352
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| Start page |
153
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| End page |
156
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| Place of publication |
Poland
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| Publisher |
Versita
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| Collection year |
2005
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| Language |
english
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| Subject |
250000 Chemical Sciences
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| Abstract/Summary |
Methods of As3+ and As5+ toxic form determination in commerce fish products in Slovakia are described. Conditions of As3+ and As5+ extraction from sea fish products were optimized. Recovery of As3+ and As5+ extraction method was determined: at As3+ determination in fish it was 80—102 %, at As5+ determination in frozen sea fish it was 80—106 %. Portion of As3+ from total arsenic content estimated in frozen sea fish was from 3.1 to 15.3 %, and in tuna cans from 3 to 5.7 %. Portion of As5+ from total arsenic content was 0—12 % in frozen sea fish and 3.3— 6.3 % in tuna cans. GF-AAS method was used for total arsenic content and As3+ and As5+species determination. Samples were decomposed in microwave high-pressure system with decomposition mixture 4 cm3 HNO3 and 0.5 cm3 H2O2. LOD was determined at the level 0.003 mg kg−1 and LOQ at 0.006 mg kg−1. Combined uncertainty of measurement was 7.1 %. The trueness of the method was tested by determination of arsenic concentration in Tuna fish IMEP-20 reference material. The analyzed value was 4.56 mg kg−1, sw = 0.40 mg kg−1, while certified value was 4.93 mg kg−1, sw = 0.21 mg kg−1. Estimated contents of toxic arsenic forms in fish products on Slovak market were relatively low and total sum of them never exceeded 20 % portion of total arsenic content. This is in accordance with published data on content of inorganic arsenic in fish products.
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