Da Le Nhu, Ha Hoang Thi Thu, Phung Vu Phong, Nguyen Thi Lien, Duong Thi Thuy, Dinh Le Minh, Huong Pham Thi Mai, Binh Phung Thi Xuan, Nguyen Tien Dat, Duong Thanh Nghi, Hanh Le Thi My, Le Phuong Thu, Quynh Le Thi Phuong
Institute of Natural Product Chemistry (INPC), Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam.
Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam.
J Anal Methods Chem. 2021 Mar 4;2021:6649362. doi: 10.1155/2021/6649362. eCollection 2021.
Fisheries and aquaculture production in the coastal zone of Vietnam contribute significantly to the national economy. However, seafood quality and safety, especially in terms of metal contents, are of increasing concern, for both domestic and international markets. This paper presents the results of an investigation in some trace metal elements (iron (Fe), zinc (Zn), manganese (Mn), copper (Cu), arsenic (As), cadmium (Cd), and mercury (Hg)) concentrations in some fishes, crustaceans, and molluscs in the coastal zone of the Red River (in the Ba Lat estuary in Thai Binh and Nam Dinh provinces) during four sampling campaigns in 2020. All samples were treated by a green sample preparation using microwave digestion and then analyzed by inductively coupled plasma-mass spectrometry (ICP-MS). The results showed that the trace metal element concentrations in fish, crustacean, and mollusc samples decreased in the following order: Fe > Zn > Mn > Cu > As > Cd ∼ Hg. In more details, the ranges of trace metal elements in seafood samples were 13.13-202.73; 7.63-82.71; 0.48-22.73; 0.72-15.58; 0.18-5.12; 0.001-1.114; and 0.001-0.923 mg·kg for Fe, Zn, Mn, Cu, As, Cd, and Hg, respectively. The research results contribute to the dataset of the seafood (both fishery and aquacultural seafood) quality in the Red River coastal zone. Although the mean values of different trace metal elements observed in this study were lower than the allowed values of Vietnam's or European's threshold for food safety, some high concentrations were detected. The survey results suggest the need to expand the monitoring scope (frequency of monitoring, number of samples, and observed variables) for obtaining a fully comprehensive assessment of seafood quality in this region. Our results also indicate that it is necessary to manage water quality in coastal areas, especially where aquaculture activities are carried out.
越南沿海地区的渔业和水产养殖生产对国民经济贡献显著。然而，海鲜的质量和安全，尤其是金属含量方面，无论是在国内市场还是国际市场，都日益受到关注。本文介绍了2020年在红河沿海地区（太平省和南定省的巴拉特河口）进行的四次采样活动中，对一些鱼类、甲壳类动物和软体动物中某些痕量金属元素（铁（Fe）、锌（Zn）、锰（Mn）、铜（Cu）、砷（As）、镉（Cd）和汞（Hg））浓度的调查结果。所有样品均采用微波消解的绿色样品制备方法进行处理，然后通过电感耦合等离子体质谱法（ICP-MS）进行分析。结果表明，鱼类、甲壳类动物和软体动物样品中痕量金属元素浓度的顺序为：Fe＞Zn＞Mn＞Cu＞As＞Cd ∼ Hg。更详细地说，海鲜样品中痕量金属元素的范围分别为：Fe为13.13 - 202.73；Zn为7.63 - 82.71；Mn为0.48 - 22.73；Cu为0.72 - 15.58；As为0.18 - 5.12；Cd为0.001 - 1.114；Hg为0.001 - 0.923 mg·kg。研究结果为红河沿海地区海鲜（包括渔业和水产养殖海鲜）质量数据集做出了贡献。尽管本研究中观察到的不同痕量金属元素的平均值低于越南或欧洲食品安全阈值的允许值，但仍检测到一些高浓度值。调查结果表明，需要扩大监测范围（监测频率、样品数量和观测变量），以便对该地区的海鲜质量进行全面评估。我们的结果还表明，有必要管理沿海地区的水质，特别是在进行水产养殖活动的地方。
