scholarly journals Concentration and health risk assessment of heavy metals in airborne particles at nusery schools in Ha Noi

2019 ◽  
Vol 35 (1) ◽  
Author(s):  
Tran Dinh Trinh ◽  
Nguyen Thi Thuy Men
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Trace Elements ◽  
Health Risk ◽  
Daily Intake ◽  
Airborne Particles ◽  
Emission Sources ◽  
Limit Values ◽  
Sampling Campaign ◽  
Metals And Trace Elements

Indoor air quality is increasingly important as people spend more and more time for indoor activities.  A sampling campaign was conducted to sample airborne particles at nursery schools in Hanoi in May and June 2018. The sampling strategy was performed during lessons and in absence of children in classrooms. Heavy metals and trace elements (Cu, Pb, Cd, Zn, Ni, As, Mn, Cr, Hg, Fe…) were quantified by using ICP-MS method. Emission sources of heavy metals were estimated using statistical analyses such as factor analysis while cancer risk assessment was conducted using chronic daily intake (CDI) and slop factor (SF). In the presence of children, indoor concentrations of heavy metals and trace elements were within the range from 1,7-3,2 ng/m3 (Cd) to 1588-3238 ng/m3 (Zn), while these corresponding values obtained when the rooms were empty were in the ranges of 0,6-0,9  and 746,2-2011 ng/m3. Indoor/outdoor ratios of studied elements varied from school to school and ranged from 0.25 to 2.88, implying presence of indoor emission sources. The calculated cancer risks ranged from 4.8x10-6 to 5.0x10-4, being hihgher than limit values set by USEPA, implying significant health risk to young children.

scholarly journals Health Risk Assessment of Heavy Metals in Consumption of Vegetables Irrigated with Tin Mine Pond Water in Jos – South, Plateau State

2020 ◽  
Vol 1 (5) ◽  
Author(s):  
G. M. Mafuyai ◽  
S. Ugbidye ◽  
G. I. Ezekiel
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Risk Index ◽  
Daily Intake ◽  
Pond Water ◽  
Estimated Daily Intake ◽  
Health Risk Index ◽  
Plateau State

The water range from Pb (1.439 – 1.715), Cu (0.234 – 0.377), Cd (0.838 – 1.346), Zn (0.448 – 1.110), Cr (0.144 – 0.794), Mn (0.777 – 2.011) and As (0.584 – 1.341) mg/L.  The range in soil was Pb (67.5 – 120), Cu (8.51 – 32.5), Cd (0.21 – 1.72), Zn (70.8 – 85.6), Cr (15.8 – 29.5), Mn (14.6 – 19.1) and As (52.0 – 198) mg/kg and  in the vegetables in the range of Pb (0.177 – 0.545), Cu (0.073 – 0.748), Cd (0.005 – 0.019), Zn (0.264 – 0.915), Cr (0.089 – 0.158), Mn (0.162 – 0.253) and As (0.032 – 0.245) mg/kg. The study shows that the transfer coefficient of the heavy metals to vegetable was less than one (< 1). The estimated daily intake (DIM) of heavy metals from vegetables irrigated with tin mine pond water were in the order: Cd > Zn > Mn > Cr > Cu > Pb > As.  The health risk index (HRI) of all the studied heavy metals indicated that all vegetables were safe with no risk to human health except for Cd.  health risk assessment of heavy metals in consumption of vegetables irrigated with tin mine pond water in Jos - South, Plateau State

Concentrations and related health risk assessment of pesticides, phthalates and heavy metals in strawberry from Shanghai, China

2021 ◽  
Author(s):  
Wan-ce Shao ◽  
Yang-yang Zang ◽  
Hai-yao Ma ◽  
Ye Ling ◽  
Zhen-peng Kai
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Heavy Metal ◽  
Health Risk ◽  
Limit Of Detection ◽  
Hazard Quotient ◽  
Daily Intake ◽  
Hazard Index ◽  
Target Hazard Quotient ◽  
Pesticides Residues

In the present study, a risk assessment of pesticides, phthalates and heavy metals in strawberries (n = 335) in recent years was conducted by determining the out estimate dietary intake (EDI), target hazard quotient (THQ) and hazard index (HI) . 128 Pesticides, 18 phthalates and 3 heavy metals were determined in this determination. 51 pesticide residues were detected in the strawberry samples, and 97.91% samples had levels of at least one of the 51 pesticides above the LOD (limit of detection). 2.39% of samples had pesticides higher than the Chinese MRL. Multiple pesticides residues were detected in most samples. Bis-2-ethylhexyl phthalate (DEHP), diisobutyl phthalate (DIBP) and dibutyl phthalate (DBP) were detected in the strawberry samples with high frequency of detection. Their detectable rates were 100, 100 and 89.9%, respectively. Most of the samples were detected lead (Pb), cadmium (Cd) and nickel (Ni) with the detectable rates 75.76, 92.93 and 92.93%, respectively. Estimated daily intake of analyzed pesticide, phthalate and heavy metal residues appear to be relatively low compared to the ADI. The average THQs and HI were less than one. That means the customers who are exposed to the average contaminants levels may not pose significant health risk. Our results show that the strawberries may be polluted by many kinds of contaminants. Therefore, monitoring of pesticides, phthalates and heavy metal residues in strawberries should be increasingly developed in order to fully protect the health of the consumer.

scholarly journals A Human Health Risk Assessment of Trace Elements Present in Chinese Wine

Molecules ◽  
2019 ◽  
Vol 24 (2) ◽  
pp. 248 ◽  
Author(s):  
Zhi-Hao Deng ◽  
Ang Zhang ◽  
Zhi-Wei Yang ◽  
Ya-Li Zhong ◽  
Jian Mu ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Trace Elements ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Health Hazard ◽  
Human Health Risk ◽  
Daily Intake ◽  
Cumulative Impact ◽  
Wine Consumption ◽  
Chinese Wine

The concentrations of trace elements in wines and health risk assessment via wine consumption were investigated in 315 wines. Samples were collected from eight major wine-producing regions in China. The concentrations of twelve trace elements were determined by inductively coupled plasma mass spectrometry (ICP-MS) and Duncan’s multiple range test was applied to analyze significant variations (p < 0.05) of trace elements in different regions. Based on a 60 kg adult drinker consuming 200 mL of wine per day, the estimated daily intake (EDI) of each element from wines was far below the provisional tolerable daily intake (PTDI). Health risk assessment indicated the ingestion influence of individual elements and combined elements through this Chinese wine daily intake did not constitute a health hazard to people. However, Cr and Mn were the potential contaminants of higher health risk in Chinese wines. The cumulative impact of wine consumption on trace elements intake in the daily diet of drinkers should not be ignored due to the presence of other intake pathways.

scholarly journals Health Risk Assessment of Selected Heavy Metals in Cocoyam from Three Quarry Sites in Old Netim, Cross River State, Nigeria

2021 ◽  
pp. 57-66
Author(s):  
P. O. Odey ◽  
F. C. Anacletus ◽  
M. O. Wegwu
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Hazard Quotient ◽  
Daily Intake ◽  
Atomic Absorption Spectrophotometry ◽  
Target Hazard Quotient ◽  
Cross River ◽  
Cross River State

This study assessed health risk assessment of heavy metals in cocoyam from three quarry sites in Akamkpa LGA, Cross River State, Nigeria. Cocoyam tubers were obtained from three quarry sites in Oban Okoroba, each 4.5 kilometers apart and 20 kilometers from the control site. Cocoyam tubers were obtained from 0km, 0.2km, 0.4km, and 0.6km. Atomic Absorption Spectrophotometry (AAS) was used to determine the content of Lead (Pb), Cadmium (Cd), Copper (Cu), Arsenic (As) and Manganese (Mn), showing relative abundance across all sites and samples in the sequence Mn > Cu > Pb > As > Cd. Quarry site D had highest levels of Mn, As and Cu (50.003 ± 5.478 mgkg-1, 0.207 ± 0.184 and 4.522 ± 1.204mgkg-1). Quarry site C and B respectively had the highest levels of Pb and Cd (1.136 ± 0.267 mgkg-1 and 0.041 ± 0.028 mgkg-1). Results of Estimated Daily Intake (EDI), Target Hazard Quotient (THQ) and Life Carcinogenic Risk (LCR) showed ingestion of cocoyam tubers from Old Netim is safe and devoid of non-carcinogenic and carcinogenic risks. THI on the other hand revealed non-carcinogenic threat may result from prolonged ingestion of cocoyam tubers cultivated within quarry sites in Old Netim.

scholarly journals Bioaccessibilities and health risk assessment of heavy metals in dust from the Guizhou-Guiyang urban zone, China

2021 ◽  
Author(s):  
郁鑫杰 ◽  
王济 ◽  
蔡雄飞 ◽  
张帅 ◽  
李丁 ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Human Health Risk ◽  
Inhalation Exposure ◽  
Residential Areas ◽  
Limit Values ◽  
Intestinal Phase ◽  
Exposure Pathways

Abstract To investigate the health risks of heavy metals in dust entering the human body from different exposure pathways. In this study, the old urban area of Guiyang was used as the study area to understand the heavy metals concentrations in surface dust, including recreational plazas, main streets, hospitals, residential areas, and schools in this city, and the bioaccessibility in the simulated lung phase and simulated gastrointestinal phase. The results showed that the concentrations of Cu, Pb, Zn, Cd, Ni, and Cr in the dust were higher than the background values, especially the Zn content exceeded the background value by 9.71 times. The bioaccessibility results indicated that the most soluble heavy metals in the simulated lung phase, simulated gastric phase, and simulated intestinal phase were Zn, Ni, and Cu, respectively, and the bioaccessibility of most heavy metals was significantly higher in the gastric phase than in the intestinal phase, and only Cu was higher in the intestinal phase than in the gastric phase. The linear results fit suggested that the total amount of heavy metals alone could not predict the human intake of heavy metals in the dust. Human health risk assessment based on bioaccessibility showed that children had higher non-carcinogenic and carcinogenic risks than adults for both hand-to-mouth ingestion and respiratory inhalation exposure pathways, but none of them exceeded the limit values.

scholarly journals Bioaccumulation and Health Risk Assessments of Heavy Metals in Mussels Collected from Madura Strait, Indonesia

2021 ◽  
Vol 13 (1) ◽  
pp. 20
Author(s):  
Defri Yona ◽  
Aida Sartimbul ◽  
Muhammad Arif Rahman ◽  
Syarifah Hikmah Julinda Sari ◽  
Priyanka Mondal ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Health Risk ◽  
Hazard Quotient ◽  
Daily Intake ◽  
Target Hazard Quotient ◽  
Estimated Daily Intake ◽  
Essential Metals ◽  
Marine Mussels ◽  
Cu And Zn

HighlightHeavy metals (Cu, Zn, Pb, and Cd) in the seawater, sediment, and soft part of marine mussels were analyzedBioaccumulation Factor (BAF), Estimated Daily Intake and Target Hazard Quotient (THQ) were calculatedHeavy metals in the seawater, sediment and marine mussels were found in varying concentrationsHealth risk assessment indexes showed low values which means insignificant health hazardAbstractMarine mussels are known as one of the biological indicators of heavy metals pollution in the aquatic environment and the sources of protein for human consumption. This study aimed to investigate the concentration of heavy metals (Cu, Zn, Pb, and Cd) in the seawater, sediment, and soft parts of the marine mussels (Perna viridis, Meretrix sp., and Anadara granosa), as well as to evaluate its health risk of consumption from Madura Strait, Indonesia. The seawater, sediment, and marine mussels were obtained from four sites and heavy metal concentrations were analyzed using Atomic Absorption Spectroscopy. In the seawater, heavy metals were in the order of Cu, Pb, Cd, and Zn from the highest to the lowest concentration respectively, while they went down in the order of Zn, Cu, Pb, and Cd in the sediment respectively. Excluding the Pb, higher Cu and Zn concentrations were observed in marine mussels than in seawater and sediments (BAF> 1). Furthermore, it was proven that Cu and Zn were considered as essential metals and required for metabolism, while Pb and Cd were non-essential metals which their biological functions were unknown. The Estimated Daily Intake (EDI) of the marine mussels was lower than the oral reference dose (ORD) and low values of target hazard quotient (THQ < 1) had shown that the consumption of mussels containing heavy metals would not cause significant health risks to humans. The health risk assessment indexes showed low values, which meant insignificant health hazard. However, long-term exposure and the impact of consuming mussels containing heavy metals may require additional investigation

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