METHOD VALIDATION AND DETERMINATION OF SEVERAL ELEMENTS IN FARMED FISH BY INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY (ICP-MS)

Thành Nho Nguyễn 1, , Thị Anh Đào Lê 1, Nhơn Đức Lê 2, Thị Hoa Lê 3, Phúc Yên Lê 3, Công Hậu Nguyễn
1 Khoa Kỹ thuật Thực phẩm và Môi trường, Trường Đại học Nguyễn Tất Thành
2 Trung tâm Kiểm nghiệm Warrantek, Cần Thơ
3 Khoa Hoá học, Trường Đại học Khoa học Tự nhiên, Đại học Quốc gia TP. HCM

Main Article Content

Abstract

 

In recent years, the fishery sector in Vietnam has remarkably developed. It not only serves the domestic market but also becomes a key export. In 2003, Vietnam was the country with the largest sea products exported to the USA, Japan, China, and Korea. The quality of fish is influenced by various criteria, mainly  related to their feeding and living habitat. Among many chemical compositions, the elements could accumulate in many organs and tissues depending on the way of exposure such as through diet or their elevated levels in the environment. Moreover, the accumulation of many metals in the fish body is different due to various affinities of metals to fish tissues, different uptake, deposition, and excretion rates. In this study, microwave-assisted acid digestion and inductively coupled plasma mass spectrometry (ICP-MS) were investigated and validated for the determination of Cr, Mn, Ni, Co, Fe, Cu, Zn, As, Cd, and Pb in fish tissue samples based on AOAC. 2015.01 (2015). The method performed proper linear ranges (R2 > 0.995), favorable repeatability, and reproducibility according to Appendix F. AOAC (2016). The recoveries were from 85.8 to 109.4% for all elements. This method could be applied for routine analysis to determine and control the elements in fish tissue samples. The contents of quantified elements in six fish samples purchased in Ho Chi Minh City were below the permitted level according to 46/2007/QD-BYT (2007). Therefore, the amount of these elements in the fish tissue are safe for human consumption. 

 

 

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References

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