Metal accumulation in Asiatic clam from the Lower Min River (China) and implications for human health

2019 ◽  
Vol 13 (2) ◽  
pp. 361-370 ◽  
Author(s):  
Yue Zeng ◽  
Zhongtao Li ◽  
Qianfeng Wang ◽  
Changcheng Xu ◽  
Yunqin Li ◽  
...  
Toxics ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 360
Author(s):  
Mohammad Main Uddin ◽  
Mohamed Cassim Mohamed Zakeel ◽  
Junaida Shezmin Zavahir ◽  
Faiz M. M. T. Marikar ◽  
Israt Jahan

Aquatic ecosystems are contaminated with heavy metals by natural and anthropogenic sources. Whilst some heavy metals are necessary for plants as micronutrients, others can be toxic to plants and humans even in trace concentrations. Among heavy metals, cadmium (Cd), arsenic (As), chromium (Cr), lead (Pb), and mercury (Hg) cause significant damage to aquatic ecosystems and can invariably affect human health. Rice, a staple diet of many nations, and other aquatic plants used as vegetables in many countries, can bioaccumulate heavy metals when they grow in contaminated aquatic environments. These metals can enter the human body through food chains, and the presence of heavy metals in food can lead to numerous human health consequences. Heavy metals in aquatic plants can affect plant physicochemical functions, growth, and crop yield. Various mitigation strategies are being continuously explored to avoid heavy metals entering aquatic ecosystems. Understanding the levels of heavy metals in rice and aquatic plants grown for food in contaminated aquatic environments is important. Further, it is imperative to adopt sustainable management approaches and mitigation mechanisms. Although narrowly focused reviews exist, this article provides novel information for improving our understanding about heavy metal accumulation in rice and aquatic plants, addressing the gaps in literature.


Author(s):  
Quratulan Ahmed ◽  
Semra Benzer ◽  
Farzana Yousuf

In this study, Nickel (Ni), Lead (Pb), Cadmium (Cd) and Chromium (Cr) concentrations were determined in muscle, liver, kidney, gills and gonads of Indian mackerel (Rastrelliger kanagurta) collected from Karachi fish Harbour, Karachi coast, Pakistan, during August 2006 and December 2011. Generally, the fish showed the highest level of Ni (2.26+0.89 µg g-1), Pb (1.45+0.40 µg g-1), Cd (2.07+0.75 µg g-1) and Cr (1.52+0.69 µg g-1) in the liver. The studied metals were the most abundant in the liver than the other organs of the fish. The amount of metal accumulation in fish tissues was evaluated in terms of human health. It was seen that bioaccumulations in muscle tissues of the fish caught from Karachi coast of Pakistan did not exceed the limit values.


2017 ◽  
Vol 23 (5) ◽  
pp. 1086-1098 ◽  
Author(s):  
Lamyai Neeratanaphan ◽  
Sukanya Khamma ◽  
Rachadaporn Benchawattananon ◽  
Patcharin Ruchuwararak ◽  
Sombat Appamaraka ◽  
...  

2009 ◽  
Vol 52 (1) ◽  
pp. 241-250 ◽  
Author(s):  
Silene de Carvalho Costa ◽  
Sandra Maria Hartz

Concentrations of Cd, Cr, Cu and Zn were determined in liver and muscle of Leporinus obtusidens. During 2003, the fishes (N = 54) were sampled from three sites along Guaíba Lake (north, central and south zones). The hypotheses tested assumed that there were differences in the location and date as to levels of contamination, association between the trace metal content in the fishes and size, and that the sex influenced metal accumulation. Possible risks of contaminated fish consumption to human health were also evaluated. The level of mean concentration (µg/g) of metals in tissues was higher in liver than muscle: [Cd] = 2.32♂; [Cr] = 0.08♀; [Cu] = 30.82♀ and [Zn] = 97.77♀. The results showed differences between the local and date sampling for all metals except Cr. Metal content was higher in the warmer than colder seasons and in the central zone than at other points. Significant sexual differences were detected for Cd and Zn and there were positive associations between the size and metal concentrations for Cu and Zn. The concentration levels of metals in muscle tissue showed that the fish samples did not offer risks to human health.


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