Analysis of Heavy Metals and Physicochemical Properties in Honey Along the Ndola-Lusaka Road , Zambia . ( Conference ID : CFP / 382 / 2017 ) (original) (raw)
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Determination of Heavy Metals and Potential Health Risk Assessment of Honey
Honey has been used as a bio monitor to determine environmental quality in the environments which are polluted by heavy metals, radioactivity and pesticides. The study sought to determine the levels of some heavy metals (Cd, Cr, Ni, Zn, Cu, Pb, As, and Mn) in honey and assess their potential health risk to consumers. Samples of honey were harvested from within 5km of the Tamale Metropolis of Ghana. A known weight (5g) of honey samples were digested using an oxi-acidic mixture of HNO 3 /H 2 O 2 and filtered into a 50ml volumetric flask. The contents of the minerals in the digests were analyzed using atomic absorption spectrophotometer (AAS). The analysis revealed that the concentrations of lead (79.815 ± 16.796 mg/Kg), nickel (15.785 ± 10.968 mg/Kg), copper (13.855 ± 10.213 mg/Kg) and manganese (8.215 ± 4.452 mg/Kg) in the samples exceeded the FAO/WHO maximum permissible limits. The elevated levels of these metals may be evidence of possible pollution agents (vehicular and industrial emissions, pollution of farm soils and pockets of water) in the study area. The Health Risk assessment (THQ< 1) showed no significant public health risk to consumers. However, we recommend regular monitoring of heavy metals from the natural environment of Tamale to mitigate possible future threats to public health.
Determination of Heavy Metals and Potential Health Risk Assessment of Honey.pdf
Honey has been used as a bio monitor to determine environmental quality in the environments which are polluted by heavy metals, radioactivity and pesticides. The study sought to determine the levels of some heavy metals (Cd, Cr, Ni, Zn, Cu, Pb, As, and Mn) in honey and assess their potential health risk to consumers. Samples of honey were harvested from within 5km of the Tamale Metropolis of Ghana. A known weight (5g) of honey samples were digested using an oxi-acidic mixture of HNO 3 /H 2 O 2 and filtered into a 50ml volumetric flask. The contents of the minerals in the digests were analyzed using atomic absorption spectrophotometer (AAS). The analysis revealed that the concentrations of lead (79.815 ± 16.796 mg/Kg), nickel (15.785 ± 10.968 mg/Kg), copper (13.855 ± 10.213 mg/Kg) and manganese (8.215 ± 4.452 mg/Kg) in the samples exceeded the FAO/WHO maximum permissible limits. The elevated levels of these metals may be evidence of possible pollution agents (vehicular and industrial emissions, pollution of farm soils and pockets of water) in the study area. The Health Risk assessment (THQ< 1) showed no significant public health risk to consumers. However, we recommend regular monitoring of heavy metals from the natural environment of Tamale to mitigate possible future threats to public health.
Journal of Agricultural Science and Food Research , 2020
The aim of the present study was to assess quality of East Gojjam honey with respect to physicochemical properties and levels of some heavy metals. Three honey samples were collected from Markets of East Gojjam Zone of Amhara Region, Ethiopia and analyzed for some major quality parameters such as pH, electric conductivity, moisture, Total solid, ash content, free acidity, reducing sugar, total sugar, non reducing sugar, total sugar, Hydroxymethylfurfural and color. The results were found to be 3.98-4.12, 0.35-0.65 mS/cm, 17.53-18.19%, 81.8- 82.38%, 0.09- 0.26%, 35.33-46.67 mg/kg, 45.09-63.79%, 61.40-68.11%, 4.30-16.51%, and12.12-23.98 mg/kg, 0.21-0.61 respectively. Significant differences (P<0.05) were observed in pH, moisture content, free acidity, electrical conductivity, ash content, reducing sugar and color of the honey samples from the three different areas. Some of the levels of heavy metal contents were determined by using flame atomic absorption spectrometry (FAAS). The optimized wet digestion method for honey sample analysis was found to be efficient for the metals determined and it was validated through the recovery experiment and a good percentage recovery was obtained (84.45 98.0%).Among the seven heavy metals analyzed for honey Cd and Pb were not detected, hence below the method detection limit. However, the concentration of Fe was found in highest amount with mean concentration ranging from (0.59 to 5.39 μg/g followed by Cr with mean concentration range of (0.22-0.46 μg/g, Cu (0.271-0.278 μg/g, Mn (0.008-0.33 μg/g and Ni (0.04-0.14 μg/g). Significant differences (P<0.05) were observed between Cr, Fe and Mn in all sample sites. The results obtained were in agreement with data reported in the literature and the metals content and the physicochemical properties investigated in honey samples were found within the ranges established by national and international standards, except non-reducing sugar content from Bichena. The slight excess value of sucrose content of honey from Bichena may be due to adulteration of the honey by addition of commercial sugar to honey. Keywords: Honey, heavy metals, Physicochemical Properties, Wet Digestion
Honey has been used as a bio monitor to determine environmental quality in the environments which are polluted by heavy metals, radioactivity and pesticides. The study sought to determine the levels of some heavy metals (Cd, Cr, Ni, Zn, Cu, Pb, As, and Mn) in honey and assess their potential health risk to consumers. Samples of honey were harvested from within 5km of the Tamale Metropolis of Ghana. A known weight (5g) of honey samples were digested using an oxi-acidic mixture of HNO3/H2O2 and filtered into a 50ml volumetric flask. The contents of the minerals in the digests were analyzed using atomic absorption spectrophotometer (AAS). The analysis revealed that the concentrations of lead (79.815 ± 16.796 mg/Kg), nickel (15.785 ± 10.968 mg/Kg), copper (13.855 ± 10.213 mg/Kg) and manganese (8.215 ± 4.452 mg/Kg) in the samples exceeded the FAO/WHO maximum permissible limits. The elevated levels of these metals may be evidence of possible pollution agents (vehicular and industrial emissions, pollution of farm soils and pockets of water) in the study area. The Health Risk assessment (THQ< 1) showed no significant public health risk to consumers. However, we recommend regular monitoring of heavy metals from the natural environment of Tamale to mitigate possible future threats to public health.
Heliyon
This study aimed to determine the levels and potential health risks posed by trace metals (Zn, Cu, Mn, Cd, Cr, and Pb) obtained in honey samples. The honey samples were from Sheko, Guraferda, Mizan Aman Town, Debub Bench, and Semien Bench in Bench Sheko Zone, Southern Ethiopia, and levels of trace metals were determined using atomic absorption spectroscopy (AAS). The levels of trace metals in honey samples across the provinces ranged as follows; Zn (1.78-4.02 mg/kg), Cu(1.85-2.35 mg/kg), Mn (0.75-1.25 mg/kg), Cd (0.011-0.038 mg/ kg), Cr (0.25-0.55 mg/kg), respectively. The level of Pb was not detected in all honey samples. The levels of trace metals obtained were lower than the maximum permissible limit set by WHO/FAO. Limit of detection (LOD) and quantification (LOQ) were ranged from 0.00045 to 0.005 and 0.0015 to 0.016, for the tested metals, respectively. The estimated recoveries of the method were ranged from 92.66% to 103.00% showed a good agreement of accuracy. The EDI values (mg/kg) of the investigated trace metals in all honey samples were less than the maximum tolerable daily intake (MTDI). The values of the target hazard quotient (THQ) and the hazard index (HI) were less than unity. The target cancer risk (TCR) values of Cd in all honey samples showed the lowest carcinogenic risks with values ranged from 3.34E-07 to 1.27E-06. However, the TCR value of Cr in all honey samples ranged from 1.03E-05 to 2.43E-05 and was in the moderate range. The P TCR value of Cd and Cr ranged from 1.15E-05 to 2.37E-05 and 1.23E-05 to 2.55E-05 for male and female adults, respectively, and were found in the moderate range. Therefore, there was no serious non-carcinogenic and carcenogenic risks to human health from exposure to trace metals through the consumption of this honey.
Trace metal contents and quality parameters (physicochemical properties) such as pH, electrical conductivity and ash content of four Ethiopian honeys were determined using flame atomic absorption spectrometry, pH-meter, conductivity meter and ashing, respectively. The optimized wet digestion method for honey analysis was found efficient for the metals determined and it was validated through the recovery experiment and a good percentage recovery was obtained (93-104%). Fe was found in highest amount with mean concentration ranging from 5.37 to 12.4 µg/g followed by Ni with mean concentration range of 0.80 to 4.46 µg/g, Cr (1.20-4.33 µg/g), Zn (1.92-4.22 µg/g), Co (0.60-1.17 µg/g), Mn (0.16-0.89 µg/g), Cd (ND-0.69 µg/g) and Cu (0.09-0.47 µg/g). The toxic metal Pb was not detected. The ranges of physicochemical properties determined were summarized as: pH 4.11-4.33, electrical conductivity of 0.10-0.29 mscm-1 and ash content 0.17-0.46%. The metals content and the physicochemical properties investigated in honey samples were found within the ranges established by national and international standards.
Determination of some heavy metals in honey from different regions of Ethiopia
Cogent Food & Agriculture, 2020
Honey is an important bee product of greater nutritional value. Ethiopia is one of the main producers of it. Honey is known to accumulate trace metals which are essential as well as toxic. Moreover, as bees collect nectar from flora of nearly in an area of around 100 km radius, the level of toxic metals in honey is an important indicator for environmental pollution by toxic metals. Thus, in this study, the qualities of 12 Ethiopian multi-floral honey samples were evaluated in terms of common physicochemical parameters, namely, moisture content, p H , free acidity, lactonic acidity, and total acidity. The values found were moisture content from 14.23 to19.2 %; p H from 3.4 to 4.8; free acidity from 30.6 to 97.6 meq Kg −1; lactonic acidity from 8.06 to 14.4 meqKg −1 , and Total acidity from 42.96 up to 107.4 meqKg −1. The analyzed samples showed proper maturity, absence of undesirable fermentation, and were in agreement with standard values (Codex Alimentarius
Honey is a natural, sugary and sticky liquid that is produced from the nectars of flowers. This study aimed to analyze the concentration of some selected heavy Metals (Zn, Cu, Mn, Cd, Pb, and Cr) in honey samples. 1g of honey sample was digested by a hot plate using 9ml of HNO3 and 3ml of H2O2. The concentrations of the heavy metals in the digested were detected using a flame atomic absorption spectrometer. The results of this study found that the concentrations of the heavy metals in the honey samples were ranged from 1.97 to 2.04 µg/g for Zn, 1.93µg/g to 2µg/g for Cu, 0.83 to 1.01 µg/g for Mn, 0.25 to 0.45 µg/g for Cr, (0.025–0.031 µg/g for Cd. However, Pb was not detected in all honey samples. Hence, the levels of heavy metals found were below the permitted levels set by the World Health Organization.The contamination levels of the heavy metals are also found to be below the detection levels. The results of this study helped us to know that the acceptable amounts of heavy metals ...
Emerging Science Journal
The present study sought to determine the content of calcium (Ca), magnesium (Mg), lead (Pb), iron (Fe), zinc (Zn) and eight phytocompounds in honey collected from twenty–three markets in the Kumasi Metropolis of Ghana. The mineral and heavy metal contents were analysed using the Atomic Absorption Spectrometry (novAA® 400P) and phytoconstituents by standard qualitative procedures. This study revealed that Mg and Ca concentrations ranged from 3.61–15.93 mg/kg and not detected–3.24 mg/kg, respectively. The concentrations of Ca and Mg were within the Recommended Dietary Allowance and Nutrient Reference Value respectively; an indication that the honey can be used as food source rich in Mg and Ca. The levels of Fe, Zn and Pb were lower than the limit of detection, indicating their safety from metal contaminants. A considerable number of phytoconstituents were detected. In general, the results obtained indicate that the honey samples collected from the Kumasi metropolis are of good quality.