Risk Assessment of Some Heavy Metals in Two Fish Species Oreochromis Niloticus and Clarias Gariepinus from Sharqia Province, Egypt

Accumulation of heavy metals in fish is considered a critical problem for human health. Therefore, the study aimed to quantify the concentrations of iron (Fe), zinc (Zn), manganese (Mn), and lead (Pb) in Oreochromis niloticus and Clarias gariepinus from two areas in Al Sharqia governorate, Egypt, from September 2017 to August 2018. A human health risk assessment was conducted to evaluate the potential hazards associated with fish consumption. Metals concentrations (mg/kg dry weight) in muscles of catfish ranged 1.88-221.26 for Fe; 1.78-19.77 for Zn; BDL-238.51 for Mn; BDL-22.75 for Pb. In muscles of tilapia fish metals concentrations ranged 7.96-149.10 for Fe; 1.20-19.77 for Zn; BDL-230.82 for Mn; BDL-25.93 for Pb. Pb had Hazard quotients (HQs) which indicated potential health risks to tilapia consumers at both study areas and catfish consumers at the Faqous area. Fishermen were at higher risk compared to the other consumers.

Download Full-text

Health risk assessment of nitrate pollution in shallow groundwater: a case study in Changchun New District, China

La Houille Blanche ◽

10.1051/lhb/2019055 ◽

2019 ◽

pp. 45-58 ◽

Cited By ~ 1

Author(s):

Hui Tian ◽

Xiujuan Liang ◽

Yan Gong ◽

Zhuang Kang ◽

Hongtao Jin

Keyword(s):

Risk Assessment ◽

Health Risk ◽

Human Health ◽

Health Risk Assessment ◽

Health Risks ◽

Human Health Risk ◽

Nitrate Pollution ◽

Assessment Model ◽

Potential Health ◽

Skin Contact

High concentrations of nitrate in groundwater pose a threat to human health. To quantify groundwater nitrate pollution in China's Changchun New District and evaluate its human health risks, 98 groundwater samples were collected and analyzed. The spatial distribution of groundwater chemical components was variable with concentrations descending from TDS > HCO3− > Ca2+ > NO3− > SO42- > Na+ > Cl− > Mg2+ > K+ > NO2− > NH4+. Notably, NO3− concentrations ranged from 0.02–492.72 mg/L and averaged 98.62 mg/L. Over 50% of samples exceeded the Quality Standard for Groundwater of China Class III N threshold (20 mg/L). Principal component analysis determined that NO3 contamination was primarily due to the excessive use of fertilizers in agriculture. A human health risk assessment model was used to assess the potential health risks of groundwater NO3− via drinking water and skin contact pathways. Approximately 90% of adults, 66% of children, and 45% of infants had acceptable health risks in the study area. NO3− exposure risk in the towns of Longjia and Xiyingcheng was the highest, while urban areas tended to have lower exposures. The health risks of residents, especially minors and infants, were concerned.

Download Full-text

Human Health Risk Assessment of Some Selected Heavy Metals in Brassica rapa var. parachinensis in Peninsular Malaysia

Food Science and Engineering ◽

10.37256/fse.2220211036 ◽

2021 ◽

pp. 77-83

Author(s):

Chee Kong YAP ◽

Wan Hee Cheng ◽

Aziran Yaacob ◽

Zulhilmi Hassan ◽

Rosimah Nulit ◽

...

Keyword(s):

Heavy Metals ◽

Human Health ◽

Brassica Rapa ◽

Health Risks ◽

Heavy Metal Contamination ◽

Human Health Risk ◽

Dry Weight ◽

Peninsular Malaysia ◽

Flame Atomic Absorption ◽

Flame Atomic Absorption Spectrophotometer

Biomonitoring of heavy metals is an important part of the ecotoxicological study. However, without the application of the metal data to reflect human wellbeing, it is considered the low impact on the society. In this study, the heavy metals in green mustard Brassica rapa var. parachinensis were collected from Sikamat (Negeri Sembilan in 2013), Kg. Sitiawan (Perak in 2016), and Ara Kuda (Penang in 2016) of Peninsular Malaysia, were determined. The samples are analyzed for the concentrations of Cu, Fe, Ni, Pb, and Zn by using the flame atomic absorption spectrophotometer. For the leafy edible part, the metal concentrations (mg/kg dry weight) ranged from 16.1-18.5 for Cu, 145-207 for Fe, 1.02-1.64 for Ni, 0.90-2.73 for Pb, and 74.0-203 for Zn. These metal data were assessed for human health risks. It was found that all the values of target hazard quotients for Cu, Fe, Ni, Pb, and Zn in both adults and children were less than 1.00. This exhibited there were no non-carcinogenic risks of the five metals through the intake of the Brassica from the present study. This could indicate that the accumulation of metals and pollution threshold is below the limit of causing hazardous effects to consumers. Nonetheless, regular assessment of health risks of heavy metals in this vegetable needs to be conducted from time to time these vegetables are prone to continuous heavy metal contamination.

Download Full-text

Mineral and heavy metals content in tilapia fish (Oreochromis niloticus) collected from the River Nile in Damietta governorate, Egypt and evaluation of health risk from tilapia consumption

Comunicata Scientiae ◽

10.14295/cs.v10i2.2270 ◽

2019 ◽

Vol 10 (2) ◽

pp. 244-253

Author(s):

Laila D Abd El-Samee ◽

Yasser A Hamouda ◽

Samia M Hashish ◽

Mosaad A Abdel-Wahhab

Keyword(s):

Heavy Metals ◽

Risk Assessment ◽

Trace Elements ◽

Health Risk ◽

Human Health ◽

Health Risk Assessment ◽

Oreochromis Niloticus ◽

Human Health Risk ◽

River Nile ◽

Fish Farms

This study was conducted to determine heavy metals and trace elements content in tilapia fish collected from three sources in Damietta governorate, Egypt and to evaluate the human health risk due to tilapia consumption. Tilapia samples were collected from two locations in the River Nile stream, tow fish farms and two sluiceways. Health risk assessment was evaluated based on the consumption habits of adult human. The results revealed that all samples vary in elements concentrations. The calculation of human health risk revealed that the consumption of tilapia in the three tested area does not pose any health risk except for Selenium. It could be concluded that consumption of such fish may be a risk for consumers who eat fish more than one time per week. Consequently, precautions should be taken and warning against eating tilapia fish caught from these regions should be announced.

Download Full-text

Bioaccumulation of heavy metals and assessment of the human health risk of consumption of Clarias gariepinus and Parachanna obscura from the Owan River, Edo State, Nigeria

Biologija ◽

10.6001/biologija.v65i3.4088 ◽

2019 ◽

Vol 65 (3) ◽

Author(s):

Ijeoma Patience Oboh ◽

Benjamin Chima Okpara

Keyword(s):

Heavy Metals ◽

Health Risk ◽

Human Health ◽

Clarias Gariepinus ◽

Human Health Risk ◽

Daily Intake ◽

Hazard Index ◽

Target Hazard Quotient ◽

Potential Health ◽

Fish Samples

Consumption of fish is a primary route of exposure to heavy metals that could be detrimental to human health due to the tendency of bioaccumulation and biomagnification along the food chain. The aim of this study was to evaluate the accumulation of heavy metals (Ni, Zn, Pb, Fe, and Cr) in two commercially available fishes, Clarias gariepinus and Parachanna obscura, and to estimate the health risks they pose to humans through consumption. Twenty-four (24) fish samples (triplicates for each month for the two species) were collected between July and October 2017. Heavy metals were identified using the atomic absorption spectrophotometer and the health risk to consumers was evaluated using Estimated Daily Intake (EDI), the Target Hazard Quotient (THQ), and the Hazard Index (HI). The THQ for the individual metals in C. gariepinus and P. obscura occurred in the decreasing order of Cr > Pb > Ni and Cr > Pb > Ni > Fe with risk values of 0.015, 0.004, and 0.001, and 0.014, 0.010, 0.002, and 0.001, respectively. The hazard index for C. gariepinus and P. obscura were 0.021 and 0.027, respectively. The values of the hazard index values of the two fish species were below the threshold value of 1, an indication of no potential health risk to consumers of the fishes. However, with the occurrence of bioaccumulation of metals in the studied fishes, regular monitoring of the river is recommended.

Download Full-text