Atrazine is a herbicide that widely used to control broadleaf and grassy weeds for growing many crops especially in maize production. It frequently detected groundwater resources. This study aimed assess the feasibility of using ultraviolet radiation UV fortified nanoparticles titanium dioxide (TiO2) doped with trivalent iron remove atrazine from aqueous phase determin removal efficiency under optimal conditions. The results this demonstrated maximum rate was at pH = 11 presence Fe+ 3-TiO2...

To assess the excess lifetime cancer risk and lung due to exposure 222Rn at homes, stone cutting processing plants, mines. concentration was measured in 74 sample sites. Sampling conducted using Alpha Track, comprising CR-39 polymer film. The detectors were placed height of 1.00–1.50 m from floor away windows sunlight per US. EPA guidelines. retrieved after being exposed for period three months then etched a 6.25 mol/L NaOH solution 90 °C 4 h. results used (ELCR) (LCR). findings showed that...

Radon is the second most important cause of lung cancer after smoking. Thus, determination indoor radon concentrations in dwellings and workplaces an public health concern. The purpose this research was to measure concentration gas residential homes places city Shiraz its relationship with type age buildings as well materials used construct building (brick, block). We also determined dosages that occupants would receive.The present study a descriptive-analytical cross-sectional conducted on...

Direct Red 81 (DR-81) dye with a very high water solubility is widely used in many industries particularly textile industries. This study aimed to evaluate the practicability of using iron filings for adsorption DR-81 from aqueous solutions. The effects pH, adsorbent dose, initial concentration, and time on process were also evaluated. maximum efficiency achieved optimum pH: 3, dose: 2.5 g/L, contact time: 30 min, concentration: 50 mg/L. increased by increasing dose time. kinetic isotherm...

Abstract Polycyclic aromatic hydrocarbons (PAHs) are persistent toxic substances that have ubiquitous presence in water, air, soil, and sediment environments, posing serious environmental risks. The present study aimed to investigate the concentrations of urinary PAHs their health effects individuals living near restaurants via a risk assessment analysis. This cross-sectional was performed on 57 people 30 as control group. Five metabolites were monitored. In order evaluate Malondialdehyde...

The adsorption efficiency (%) of Direct Red 81 (DR 81) dye using neutral soil containing copper (NSCC) was studied in a batch reactor with respect to adsorbent dose, initial concentration, pH and contact time.Maximum (41.84%) obtained from an dose 2 g/L, 3, concentration 50 mg/L time 60 min.An increase the observed when increased decreased.The Langmuir Freundlich isotherm models were tested, it found that model fitted better than model.In addition, rates conform pseudo-second-order kinetics...

Background: Fat, oil and grease (FOG) in municipal wastewater treatment plant (MWWTP) caused many problems. Objectives: This study aimed to determine the removal efficiency of FOG Shiraz MWWTP. Materials Methods: The efficiencies MWWTP were studied from June 2011 September (Iran). influent effluent samples collected a volume one liter (4 per week) analyzed according standard methods. Samples are transferred laboratory immediately. concentration was determined using solvent extraction...

Abstract Polycyclic aromatic hydrocarbons (PAH s ) are often formed when organic substances do not burn completely. This study evaluates the non-carcinogenic and cumulative risks associated with PAH levels by testing blood urine samples in kitchen workers residents near restaurants Shiraz, Iran. Metabolites of as well clinical parameters were measured. The risk assessments from exposure groups to metabolites also evaluated. highest average concentrations related (2126.7 ng/g creatinine (ng/g...

Background: Reactive dyes, anionic compounds with high water solubility, are widely used in textile industries. Objectives: The present study aimed to assess the feasibility of photo-Fenton process removing Red 198 dye from aqueous solutions and determine optimal conditions for maximum removal. Materials Methods: This was performed on a laboratory scale using 4-liter photochemical reactor. spectrophotometer DR5000 (wavelength 520 nm) concentration. effect influencing parameters, including pH...

Background: In recent years, the nitrate concentration in surface water and especially groundwater was increased significantly many parts of Iran. Objectives: The main objectives this study were to evaluate feasibility using granular ferric hydroxide (GFH) remove from aqueous phase as well determine removal efficiency at optimal condition. Materials Methods: present conducted on a bench scale experiment. spectrophotometer DR5000 (wavelength 520 nm) used concentration. effect influencing...

Background and purpose:The main objectives of this research were to evaluating the application electrocoagulation process for 198 dye from aqueous phase determining optimum operating conditions removal using aluminum iron electrodes. Materials Methods:The present study was conducted in bench-scale.The spectrophotometer DR 5000 used determine concentration.The effects pH, retention time, voltage, concentration on efficiency investigated.Data analyzed SPSS Windows 16.0 Pearson's correlation...

Background: Nitrate is largely dissolved in the surface and ground water, due to its high solubility. Continual uptake of nitrite through drinking water can lead problems diseases (such as blue baby) for humans, especially children. Objectives: The aim this study was develop a new inexpensive method removal nitrate from water. In regard, possibility using chaff aqueous solutions studied optimum operating conditions determined. Materials Methods: This cross-sectional conducted laboratory...

Background: Exposure to environmental pollutants which have entered the atmosphere due human and industrial activities results in harmful unwanted effects on health. The undesired of air pollution mental disorders, mortality, psychological disorders been proven. Depression is a common health problem today’s societies impacts quality life. objective this study was determine relation between exposure frequency depression Shiraz (Southern Iran). Methods: Archived documents 2658 patients...

Background: Investigating the obstacles to research in developing countries can yield valuable outcomes. Thus, universities that seek global competition and progress should identify remove barriers provide researchers with opportunity for performing more studies. Objectives: The purpose of this study was investigate viewpoints faculty nonfaculty members Shiraz University Medical Sciences. Materials Methods: This conducted using two consecutive methods among First, a qualitative phase...

Background: High levels of nitrate anion are frequently detected in many groundwater resources Fars province. Objectives: The present study aimed to determine the removal efficiency from aqueous solutions by electrocoagulation process using aluminum and iron electrodes. Materials Methods: A laboratory-scale batch reactor was conducted method. determined at pH 3, 7, 11, different voltages (15, 20, 30 V), operation times 30, 60, 75 min, respectively. Data were analyzed SPSS software version 16...