Non-Cancer Human Health Risk Assessment From Exposure to Heavy Metals in Surface and Groundwater in Igun Ijesha, Southwest Nigeria

Ayantobo,

doi:10.3844/ajessp.2014.301.311

Cited by 35 publications

(19 citation statements)

References 22 publications

(18 reference statements)

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“…[17,18]. The toxic risk due to potentially hazardous substances in the same media is assumed to be additive and the arithmetic sum of individual THQ is equal to HI [19,43,44]. In this study, the total hazard index (HI) was greater than unity for all the locations in both dry and wet seasons.…”

Section: Health Risk Assessment Via Ingestion Of Water From Qirementioning

confidence: 98%

Human Health Risk Assessment of Trace metals in Water from Qua Iboe River Estuary, Ibeno, Nigeria

Moses¹,

Etuk²

2015

J Environ Occup Sci

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Aims: This study aimed to determine levels of trace metals in Qua Iboe river estuary (QIRE), Ibeno and estimate human health risk associated with water from the river via ingestion and dermal exposure. Method: Trace metals in water from QIRE was measured using atomic absorption spectrophotometer and human health risk induced by the trace metals in dry and wet seasons was investigated using mathematical models recommended by United States Environmental Potential Agency (USEPA). Results: The range for the different metals investigated in dry season were as follows: Pb (0.147 to 0.19mg/l), Cd (0.02 to 0.31mg/l), V(0.04 to 0.11mg/l), Cr (0.09 to 0.18mg/l), Ni (0.28 to 0.61mg/l), Fe (8.78 to 13.97mg/l), Zn (0.13 to 0.56mg/l). The results for wet season were: Pb (0.07 to 0.19mg/l), Cd (0.05 to 0.31mg/l), V (0.01 to 0.03mg/l), Cr (0.02 to 0.15mg/l), Ni (0.03 to 2.33mg/l), Fe (0.02 to 4.92mg/l), Zn (0.11 to 0.43mg/l). Concentrations of metals were above USEPA limits except Zn. The target hazard quotient (THQ) and hazard index (HI) values via ingestion of water were greater than one while the THQ values via dermal contact were greater than one for Cd only. The combined target hazard index (HI*) from ingestion and dermal contact of water was greater than unity for Cd, Cr and Pb for wet and dry seasons. Conclusion: Findings in this study show that Pb, Cd and Cr may contribute to health risk from dermal and oral exposure to water from the QIRE systems. Constant monitoring and remediation processes of the QIRE are strongly recommended.

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Section: Health Risk Assessment Via Ingestion Of Water From Qirementioning

confidence: 98%

Human Health Risk Assessment of Trace metals in Water from Qua Iboe River Estuary, Ibeno, Nigeria

Moses¹,

Etuk²

2015

J Environ Occup Sci

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“…The risk due to potentially hazardous substances in the same media is assumed to be additive and arithmetic sum of individual THQ is equal to HI [11,37]. In this study, the total target hazard quotient, also known as hazard index (HI) was greater than unity for all the study sites.…”

Section: Health Risk Assessment Via Ingestion Pathwaymentioning

confidence: 98%

Human Health Risk Assessment of Trace Metals in Water from Cross River Estuary, Niger Delta, Nigeria

Etuk

Akpakpan

2020

AJOCS

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The aim of this study was to determine the levels of some trace metals in water from Cross River estuary (CRE) and estimate the human health risk associated with water from the estuary via ingestion pathway and dermal contact. The trace metals in water were determined using atomic absorption spectrophotometer and the human health risk assessment of the trace metals was carried out using models stipulated by United States environmental Protection Agency (USEPA). The range for the results in mg/l was as follows: Pb (0.193- 0.632), Cd (0.118 - 1.084), Ni (0.048 -0.632), Fe (0.056 - 0.921), Zn ( 0.063 - 0.242), Cu(0.072 - 0.146). All the investigated metals were above the WHO limit except zinc and copper. The target hazard quotient (THQ) via ingestion pathway for Pb, Cd and Ni were higher than unity. Also, the hazard indices for all the investigated metals in all the study sites were higher than unity. The target hazard quotient and Hazard index via dermal pathway were less than one for all the metal investigated, except Cd at Ebughu. Regular monitoring and minimization of anthropogenic activities resulting in elevated metal concentration is recommended.

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“…This process employed engineering/science tools and statistics to identify and measure hazards, determine possible routes of exposure, and finally use that information to calculate a numerical value to represent the potential risk [25]. The risk assessment process as proposed by the US Environmental Protection Agency consists of four steps [26]. These steps include: 1) Hazard identification, 2) Exposure assessment, 3) Dose response/toxicity assessment and 4) Risk characterization.…”

Section: Human Health Risk Assessmentmentioning

confidence: 99%

Trace Metals in Groundwater of the South Eastern Piedmont Region of Mount Cameroon: Quantification and Health Risk Assessment

Akoachere¹,

Etone²,

Mbua³

et al. 2019

OALib

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The South Eastern Piedmont Region of Mount Cameroon is getting increasingly populated. Groundwater is the main resource for drinking in this area; hence, the quantification of trace metals, suitability and quality of the groundwater resources for drinking, domestic and agro-industrial uses is of public and scientific concern. In this study, 10 samples were collected from 10 sites in September 2017. Field measurement of physicochemical parameters and investigation of the levels of trace metal content in groundwater was determined using Inductively Coupled Plasma Mass Spectroscopy ICP-MS. R-mode statistical analysis has been done and traces metals elements correlated with the physicochemical parameters and cluster analysis PCA carried out. The paper also highlights and determines the average daily dose ADD, the carcinogenic risks CR and the non-carcinogenic risk hazard quotient HQ which yields the hazard indices HI. The general trend of mean trace metal concentration in the sampled groundwater was in the order of: Zn > Fe > Al > V > Mn > Cu > Cr > Ni > Pb > As > Co > Cd > Sb. All the groundwater risk indices; ADD, CR, HQ and HI were less than 1 in categories of insignificant health risk. The severity of metal toxicity is governed by several factors, such as dose, nutrition, age, and even life style. Therefore, this low trend might not guarantee the complete absence of human health risk. Generally, from risk assessment on trace metals using risk indices, the analyzed water samples might not be at an alarming health risk. However, due to an increasing level of environmental pollution that might be imposed by increasing human activity in this region, water sources might become a potential sink of contaminants; this is significant reason that makes constant monitoring, implementation and treatment of groundwater for drinking purposes obligatory.

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Non-Cancer Human Health Risk Assessment From Exposure to Heavy Metals in Surface and Groundwater in Igun Ijesha, Southwest Nigeria

Cited by 35 publications

References 22 publications

Human Health Risk Assessment of Trace metals in Water from Qua Iboe River Estuary, Ibeno, Nigeria

Human Health Risk Assessment of Trace metals in Water from Qua Iboe River Estuary, Ibeno, Nigeria

Human Health Risk Assessment of Trace Metals in Water from Cross River Estuary, Niger Delta, Nigeria

Trace Metals in Groundwater of the South Eastern Piedmont Region of Mount Cameroon: Quantification and Health Risk Assessment

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