Bioaccumulation of heavy metals in Channa punctatus (Bloch) in river

Overview

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Key numbers

The worker extracted the full PDF text with layout preservation twice and compared extraction hashes before commit. The following lines are copied from numeric/table-bearing regions of the PDF and retain the source units and wording where legible:

• approximately 97% of water consists of seas and oceans while as 2018). It has several important cultural, economical and environ-
• freshwater resources contribute only 3% of water (Shrestha et al., mental values and provides water for approximately to 450 million
• and ice caps on poles, 30.1% is groundwater (Adhikari and Mal, culture Gupta et al., 2018). Fishes in addition to its important
• Table 2 shows the comparison of obtained values of water samples
• while that in kidney Zn > Fe > As > Cd > Pb (Table 3). The values opmental processes (Rezvanfar et al., 2016; Sang et al., 2018). Con-
• 0.2 mg/kg and Arsenic is above 0.26 mg/kg recommended maxi- trate metals in their muscles (Zhaoa et al., 2018; Juncos et al.,
• Fig. 3. Bioaccumulation factor of heavy metals in liver and kidney of C. punctatus. Values are expressed in mg/kg.
• in aquatic ecosystems Al Sayegh Petkovšek et al., 2011). Pal et al. Hence, water is not suitable for fish and human consumption.

Methods (brief)

• the help of atomic absorption spectrometer performed on its water samples demonstrated the accumu-
• thus discharged from the source, leach into underground waters, 2.2. Collection of samples
• waters. Industrial wastes containing heavy metals on entering Water samples (five per each location) were collected in the
• The concentrations of heavy metals in aquatic environment and water samples for heavy metal analysis. The six-medium sized
• its organisms have been of considerable interest to understand fresh water fish, (Channa punctatus) samples (five for each location)
• because of their toxic effects (Wani et al., 2017; Satapathy and were collected with the help of local fisherman from the affected
• et al., 2015; Arulkumar et al., 2017; Pal and Maiti, 2018; Kumari 2.3. Sample preparation for heavy metal analysis
• The aim of this study was to evaluate the concentrations of Water samples collected were filtered and acidified with Nitric
• ganga as well as groundwater of nearby regions and its influence fish samples were sacrificed and the main target organ was
• on the tissues of inhabiting fresh water teleost fish, Channa puncta- removed. Fish tissue samples were dried at 105 °C and powdered
• (WHO) and Food and Agricultural Organization (FAO) for human in the ratio of 3:1. Digested samples were then filtered with what-
• because of its hardy nature, high nutritional value and its round water samples were analyzed using Atomic Absorption Spectrom-
• the year availability. eter and results are expressed in lg/g (for tissue samples) and mg/
• L (for water samples).
• Statistical analysis of the five-sampled data was done analysis
• Table 2 shows the comparison of obtained values of water samples
• Bioaccumulation of Heavy metals content (ug/L) in Water samples where. not break down in the environment, remain in fish body for long
• Bioaccumulation Factor (BAF) of heavy metals in C. punctatus tissue samples.

Implications

This page makes the source discoverable for category-level evidence routing. Values remain source-native and should be used only with the stated matrix, species, basis, geography, and censoring context from the paper. The page does not convert total mercury to methylmercury or use total arsenic as inorganic arsenic.

Wiki pages this source may touch

• Fish — marine, non-predatory (sardines, anchovies, salmon, cod)
• Mercury
• Cadmium
• Lead
• Arsenic
• Chromium

Verification notes

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Update history

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