Heavy Metals and Major Nutrients Accumulation Pattern in Spinach Grown in Farm and Industrial Contaminated Soils and Health Risk Assessment

Sharmin

et al. 2020

AIR

Self Cite

An experiment was conducted to study heavy metals bioaccumulation pattern in edible tissues of different farmed fishes and to assess human health risk through their dietary intake. Total 3 different species viz. grass carp (Ctenopharyngodon idella), silver carp (Hypophthalmichthys molitrix) and mrigel (Cirrhinus cirrhosis), and 3 dissimilar sizes of fish samples were collected from Muktagacha and Trishal area of Mymensingh district, Bangladesh during January 2018 and analysed for this study. Among the fish species, mean concentrations of Ca, Na and K were higher in mrigel; Mg and S contents were higher in silver carp and P content was higher in grass carp. As regards to heavy metals, mean concentrations of Pb (18.98 µg g-1), Ni (0.688 µg g-1) and Cu (15.197 µg g-1) were higher in mrigel; Cd (1.127 µg g-1), Cr (15.097 µg g-1) and Zn (36.023 µg g-1) contents were higher in grass carp, while contents of all metals were lower in silver carp. In context of size, both mineral nutrients and heavy metals bioaccumulation pattern in all species were higher in large size fishes. Similarly, metal pollution index values for all species of fish samples showed a sequence- large size> medium size> small size, which indicates that heavy metal bioaccumulation pattern was directly related to the size and age of fishes. The study results revealed that the daily intakes of Pb and Cd for all species and sizes of fish samples were higher than that of upper tolerable intake level. Target hazard quotients (THQ) values for Pb and Cr surpassed 1.0 for both male and female, which indicate that the exposed populations are in a level of concern interval. But in context of other heavy metals, these farmed fishes can assume as safe for human consumption.

Section: Introductionmentioning

confidence: 99%

Heavy Metal Bioaccumulation Pattern in Edible Tissues of Different Farmed Fishes of Mymensingh Area, Bangladesh and Health Risk Assessment

Akter

Sharmin

et al. 2020

AIR

Self Cite

“…It is worth mentioning that although heavy metals can change their chemical form, they cannot be degraded or destroyed. Therefore, the risk assessment of these metals through dietary intake is an important issue [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Health Risk Assessment of Heavy Metal Intake of Common Fishes Available in the Brahmaputra River of Bangladesh

Eti

Quadir

et al. 2019

ACRI

Self Cite

Fifteen (15) fish species were collected from three (3) locations of the Brahmaputra River to determine heavy metals content in fish flesh, and to assess potential human health risk through consumption of those fishes. The contents of heavy metals in aqueous extract of different fish species were determined by an atomic absorption spectrophotometer (AAS) at the Department of Agricultural Chemistry, Bangladesh Agricultural University, during the period from March to June, 2018. The concentrations of Mn, Zn, Cu, Pb, Cd and Cr in different fish species ranged from 41.70-376.62, 38.98-279.08, 3.19-47.91, 2.20-3.73, 0.19-1.20 and 0.59-2.40 mg kg-1, respectively. The study results revealed that the edible portion of fish species of the river contained reasonably higher amount of Mn, Zn, Pb, Cr and Cu compared to some other previous studies carried out elsewhere with freshwater fishes. Among the fish species, mola (Amblypharyngodon mola) showed the highest metal pollution index (20.12) followed by chela (Salmophasia bacaila) (17.72), chanda (Chanda nama) (16.78) and chingri (Macrobrachium sp.) (15.83), while baim (Macrognathus aculeatus) exhibited the lowest (6.79). The calculated daily metal intake for Pb, Mn and Cd for both male and female were higher than that of upper tolerable intake level, which indicates consumption of common fishes of this river, is not safe. Similarly, target hazard quotient (THQ) values for Mn surpassed 5.0 for both male and female, and the same value for Pb also surpassed 5.0 for female indicate that the exposed population are unsafe. The study results also revealed that all individual THQ values of other metals for both male and female surpassed 1, which means exposed population are in level of concern interval. In Bangladesh freshwater river fishes are more popular than farm fishes. However, the study results recommend to aware people about heavy metal contents before consuming fish species of a polluted river system.

“…Heavy metals are generally not removed even after the treatment of wastewater at sewage treatment plants [14], and thus cause risk of heavy metal contamination of the soil and subsequently to the food chain. Intake of heavy metals through the food chain has been widely reported throughout the world [15][16][17][18]. Due to the non-biodegradable and persistent nature, metals are accumulated in vital organs in the human body such as the kidneys, bones and liver and are associated with numerous serious health disorders [19].…”

Section: Introductionmentioning

confidence: 99%

Impact of Industrial Wastewater Irrigation on Heavy Metal Deposition in Farm Soils of Bhaluka Area, Bangladesh

Islam

Rahman

et al. 2020

JGEESI

Self Cite

The study was conducted to determine heavy metal contents in industrial wastewater and contaminated soils of Bhaluka, Mymensingh and to assess their pollution level. A total of 9 industrial wastewater and 12 contaminated farm soil samples were collected directly from the farmers’ fields of Bhaluka area and analysed for this study. Considering EC, salinity and TDS, 56 to 89% wastewater samples were found problematic for long term irrigation. The concentration of CO3, HCO3 and Cl in wastewater ranged from 0.20-1.60, 2.0-11.2 and 1.30-4.79 me L-1, respectively and the content of Ca, Mg, Na and K in wastewater ranged from 16.03-52.10, 4.86-21.87, 101.98-678.90 and 5.59-48.63 mg L-1, respectively. The study results revealed that all wastewater samples were found unsuitable for irrigation in respect of CO3, HCO3 and K. Among the heavy metals studied, Pb, Cd and Fe concentrations in all wastewater samples and Mn content in 5 samples were found above than the acceptable limit for irrigation. The concentration of Zn, Cr, Cu, Pb, Ni, Cd, Mn and Fe in wastewater irrigated soils of Bhaluka industrial area ranged from 50.48 to 448.56, 47.22 to 83.65, 19.13 to 328.23, 42.37 to 77.96, 22.93 to 43.86, 0.70 to 1.40, 161.5 to 341.7 and 38105 to 65399 μg g-1, respectively. Considering geoaccumulation index, the Igeo values for Pb and Cd for all locations of the study area exhibited positive values (0.495< Igeo <1.624), that means Igeo class: 1-2, indicate moderately polluted soil quality. On the other hand, as regards to enrichment factor (EFc), 9 locations for Pb, 5 for Cd, 1 for Zn and 1 for Cu had EFc values > 5.0, indicate contaminated soil quality. The study concluded that industrial wastewater used for irrigation was directly linked with the heavy metals deposition in the farm soils.