Showing 3 results for Trace Elements
Volume 13, Issue 2 (4-2010)
Abstract
Objective: Considering the various evidences due to effects of trace elements on the outcome of pregnancy, we decided to assess the effect of these elements levels in maternal and cord serum on low birth weight.
Materials and Methods: An Analytical cross-sectional study was performed on 344 pregnant women in labour and their neonates in Maryam, Akbarabadi and Vali-e-Asr hospitals in Tehran, Iran. Iron, zinc, copper, magnesium and calcium concentrations in cord and mother serum were measured. Collected data were analyzed by spss13 software, using Chi- square and Logistic regression tests with significant level p< 0/05.
Results: The characteristics of studied subjects were: Mean age: 27.02±5.3 years, pregnancy duration: 38.9±1.3 weeks, number of low birth weight neonates: 13(3.8%). Prevalence of trace elements deficiencies in mothers were: zinc: 26.7%, copper: 53.5%, magnesium: 72.4%, Iron: .6%, calcium: 49.4%, and in neonates were: zinc: 3.5%, copper: 41.6%, magnesium: 67.4%, Iron: 3.2% and calcium: 2.3%.
In Chi- square test, a significant negative relationship between maternal calcium deficiency and low birth weight (p=.011) was found and logistic regression analysis showed a significant negative relationship between maternal calcium serum and low birth weight (odd: 0.27, %95CI: 0.09- 0.77).
Conclusion: Delivering low birth weight neonates were more common in mothers with calcium deficiency and other elements did not show any significant relationships with low birth weight. It is possible to find different results about the effect of these minerals on pregnancy outcome with more samples and in different settings. It is recommended to perform more research on effects of trace elements on neonatal and maternal pregnancy outcomes to help prevent mother and fetus mortality and morbidity.
Mohammad Rreza Taherizadeh, Zohre Barkhovdari Ahmady, Fatemeh Shayesteh, Mohsen Gozari,
Volume 14, Issue 2 (5-2025)
Abstract
In this rese
In this research, the sediments of Bandar Abbas and Tiab estuary areas in Hormozgan province were conducted to determine the amount of heavy metal contamination (iron, copper, lead, zinc and nickel). Sampling of the sediments of these areas was done to determine the enrichment index and geochemical index using grab, and the flame atomic absorption device was used to determine the concentration of heavy metals. The results based on the mean (M ± SD) shows that the concentrations of the studied elements in different stations were significantly different from each other (P<0.05). So that in terms of the concentration of elements studied by FAO/WHO global standard in Bandar Abbas region (nickel 328.13±139.34, zinc 175.68±50.92, copper 0.0086±0.002, lead 12.67± 81.79 and iron 17520±691.21 μg/g) compared to Tiab region (nickel 1065.56±71, zinc 367.74±23, copper 0227±0.003, lead 72/19±60 123 and iron 35176 ± 872.38 µg/g) exhibited less contamination. The results of the enrichment factor of metals in iron and copper without enrichment, zinc with moderate enrichment, lead with relatively strong enrichment and nickel with severe enrichment, and in terms of Müller's geochemical index, the degree of soil pollution in the category of non-contaminated soils, with nickel component have a moderate degree of pollution. The pollution situation in Tiab region is more severe compared in Bandar Abbas region due to various reasons such as the presence of shrimp breeding sites, urbanization development, industry, agriculture and also due to the unprincipled oil activities that are carried out on the coasts. |
Volume 21, Issue 5 (9-2019)
Abstract
Treated wastewater could be a valuable source of water for recycling and reuse in arid regions. Two one-year field experiments were carried out to determine the effects of municipal treated wastewater on seed yield and seed heavy metals content of safflower cultivars, in Research Farm of Yazd Municipal Wastewater Purification Station, during 2015 and 2016. The experiments were arranged as split plot based on a randomized complete block design with three replicates. Irrigation treatments were in the main plot, consisting of three irrigation strategies (irrigation with only treated municipal wastewater, irrigation with treated wastewater/fresh water alternatively, and irrigation with only fresh water) and three safflower (Carthamus tinctorius) cultivars (Sofeh, Isfahan native, and Goldasht) in the subplots. Results showed that yield and yield components increased by treated wastewater treatment compared to the other irrigation treatments. Application of treated wastewater caused increase in safflower grain (40%) and biological (9%) yield as compared to fresh water treatment. Treated wastewater application led to accumulation of trace elements (Fe, Mn, Cu, Cd and Pb) in safflower seeds; however, the content of all the metals were below the permissible limits recommended by World Health Organization.