Mohammad Hossein Nemati; Seyed Saeed Mosavi
Abstract
Abstract Background and Aim: To maintain the health of consumers and achieve food safety, the control of maximum allowed heavy metals in food should be considered. This study aimed to investigate the concentration of heavy metals of copper (Cu), zinc (Zn), lead (Pb), and cadmium (Cd) in livestock tissues ...
Read More
Abstract Background and Aim: To maintain the health of consumers and achieve food safety, the control of maximum allowed heavy metals in food should be considered. This study aimed to investigate the concentration of heavy metals of copper (Cu), zinc (Zn), lead (Pb), and cadmium (Cd) in livestock tissues in the vicinity of Zinc Specialized Industrial Park. Material and Methods: Ten samples were collected from each sheep tissue (including meat, liver, kidney, and bone) in each of the four geographical directions. To compare the current situation, samples from a control area (Qarah Poshtlu area of Zanjan) were also considered. A dry ash method was used to digest organic matter. Results:Based on the results, the concentration of Cu was significantly high in the muscle and liver of the control group (P <0.05). The concentration of Zn was not affected by the study areas. The accumulation of Pb in the liver and bone and Cd in the muscle and liver of animals was significantly high in the western part of the study area (P <0.05). The levels of Cu in the kidney and bone tissues, Pb in the muscle and kidney tissues, and Cd in the kidney and bone tissues were not affected. The accumulation of Cu was inversely related to Pb and Cd. Conclusion:In general, the results showed that despite heavy metal accumulation in the west of the study area, the concentrations of these metals in the tissues of sheep around it were within the allowable range and they were not dangerous to consumers.
Soheil Sobhanardakani; Bahareh Babaei
Abstract
Background & Objective: Toys are integral part of children’s developmental processes. Besides providing entertainment to children, toys also serve as educational materials for them. Chemical exposure to children, from toys, is an emerging concern. Therefore, quality control of toy is very important. ...
Read More
Background & Objective: Toys are integral part of children’s developmental processes. Besides providing entertainment to children, toys also serve as educational materials for them. Chemical exposure to children, from toys, is an emerging concern. Therefore, quality control of toy is very important. The aim of this study was examined heavy metals (As, Pb, Cd and Cr) content within the plastic children’s toys marketed in Hamadan city in 2015.Materials and Methods: Totally 30 specimens of toy were collected from market basket of Hamadan City. After preparation and processing the samples in the laboratory, the concentration of metals in samples were determined using atomic absorption spectrophotometer (AAS). Also, all statistical analyses were performed using the SPSS statistical package. Results: The results showed that the maximum mean concentrations of metals in domestic production and imported plastic toys were 6.20±5.41 and 7.58±2.12 mg/kg for Cr and Pb, respectively. Also the mean concentrations of metals in all samples were lower than Iranian National Standards Organization and European Commission permissible limits. Conclusion: Although the results showed that mean concentrations of metals in children’s toys were lower than ISIRI and CEN permissible limits, but as regards the chewing, licking and swallowing behavior of children is a common source of metals exposure, acting quickly by adopting policies to protect and educate consumers about the risks posed by plastic made toys needs a special attention which could help protect children’s lives especially in Iran.