Journal of Environmental Health Science and Engineering This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Contamination of obsterics and gynecology hospital air by bacterial and fungal aerosols associated with nosocomial infections
AbstractBacterial and fungal bioaerosols are a global concern due to nosocomial infections, especially in developing countries. Our study aimed to detect fungal and bacterial bioaerosols in different wards of an obstetrics and gynecology hospital air samples. 240 bioaerosol samples were collected by performing impaction method from different wards of a hospital in the central part of Iran, during two seasons. Fungi genera and bacteria species are recognized by cultivation. Concentrations of bacteria and fungi  were ranged from 44 to 75 CFU/m3 and 8 to 22  CFU/m3, respectively. Labor Delivery and Recovery (LDR) and Emerg...
Source: Journal of Environmental Health Science and Engineering - February 27, 2021 Category: Environmental Health Source Type: research

Synthesis and application of functionalized Graphene oxide-silica with chitosan for removal of Cd (II) from aqueous solution
In this study, the adsorbent was synthesized and the batch system of adsorption method was examined to find the potential of the new adsorbent with the various factors of the concentration, pH, time and temperature. The characterization of adsorbent was analyzed by FT-IR, TEM, Zeta potential and XRD analysis. Regards to the analysis it can be understood that the adsorbent was synthesized successfully. The investigational results were validated and analyzed by applying the 5 models of isotherm and 4 models of kinetic. The Langmuir, Freundlich, Temkin, Harkins-Jura and Dubinin-radushkevich models were used which the Langmuir...
Source: Journal of Environmental Health Science and Engineering - February 26, 2021 Category: Environmental Health Source Type: research

Prenatal blood levels of some toxic metals and the risk of spontaneous abortion
AbstractHigh-level toxic metal exposure has become rare in the recent years. Although, it has not known whether relatively lower exposure may adversely affect human reproductive system. Spontaneous abortion (SA) is a serious reproductive problem, which, in many cases, the cause(s) is not clearly understood. To assess the relationship between prenatal blood level of metals and SA risk, we compared blood concentration of some heavy metals in samples taken from mothers recruited in Tehran Environment and Neurodevelopmental Defects (TEND) study conducted on apparently healthy pregnant women in Tehran, Iran who subsequently exp...
Source: Journal of Environmental Health Science and Engineering - February 26, 2021 Category: Environmental Health Source Type: research

The presence of SARS-CoV-2 in raw and treated wastewater in 3 cities of Iran: Tehran, Qom and Anzali during coronavirus disease 2019 (COVID-19) outbreak
This study aimed to identifying the presence of SARS-CoV-2 RNA in raw and treated wastewater during the COVID-19 outbreak in Tehran, Qom and Anzali cities (Iran). From three wastewater treatment plants (WWTPs), 28 treated and untreated wastewater composite samples were collected from April 4 to May 2, 2020. In this study, polyethylene glycol 6000 (PEG 6000) was used through one-step real-time quantitative reverse transcriptase-polymerase chain reaction (qRT-PCR) for identification of RNA viruses. SARS-CoV-2 RNA was elicited from wastewater composite samples in all inlet samples taken from the three above mentioned cities. ...
Source: Journal of Environmental Health Science and Engineering - February 24, 2021 Category: Environmental Health Source Type: research

Isolation and identification of a 2,3,7,8-Tetrachlorodibenzo-P-dioxin degrading strain and its biochemical degradation pathway
This study aims to find a high-efficiency degradation strain which can biodegrade the 2,3,7,8-Tetrachlorodibenzo-P-dioxin (2,3,7,8-TCDD). In this paper, a new fungus strain was isolated from activated sludge of Dagu Drainage River in Tianjin which was able to degrade 2,3,7,8-TCDD in the medium. Based on its morphology and phylogenetic analysis of its 18S rDNA sequence, the strain was identified asPenicillium sp. QI-1. Response surface methodology using central composite rotatable design of cultural conditions was successfully employed for optimization resulting in 87.9  % degradation of 2,3,7,8-TCDD (1 µg/mL) within 6 d...
Source: Journal of Environmental Health Science and Engineering - February 24, 2021 Category: Environmental Health Source Type: research

Photocatalytic activity of synthetic ZnO/WO 3 nanocomposites immobilized on a Y-zeolite in removal of gas-phase styrene
ConclusionsThe results of this study indicate that this photocatalyst is suitable for the removal of styrene under UV light. The highest removal efficiency achieved was with Y-ZnO/WO3 at 2%.Graphical abstract (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - February 22, 2021 Category: Environmental Health Source Type: research

Effect of cigarette butt on concentration of heavy metals in landfill leachate: health and ecological risk assessment
AbstractCigarette butt is known as hazardous waste with numerous toxic and carcinogenic pollutants which impose serious concern for both the environment and human. Heavy metals are recognized as the most common pollutant in the cigarette butts. The concentration of some heavy metals (cadmium, chromium, nickel, lead and zinc) in leachate obtained from the pilot landfill with commingled waste and freshly smoked cigarettes butts were analyzed. The results showed that the addition of 0.76% (in weight) freshly smoked cigarette butts in landfilled waste increased total heavy metal concentration by 4.8%, while addition of 1.3% (i...
Source: Journal of Environmental Health Science and Engineering - February 19, 2021 Category: Environmental Health Source Type: research

Development and validation of a new method for determination of methylparaben in Iran market infant formulae by HPLC
ConclusionsThe new extraction and measurement method was a short-time method and could be applicable for large numbers of samples. This method was fast, sensitive and accurate and was capable of being used in legal laboratory references for determination of methylparaben content. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - February 18, 2021 Category: Environmental Health Source Type: research

Isolation, identification and reviewing the health effect of HPC bacteria in household point-of-use (PoU) water treatment devices: a case study, Ahvaz, Iran
AbstractIn Ahwaz, a city in west southern Iran, the majority of households are using Point of Use (PoU) water treatment units. The heterotrophic plate count (HPC) bacteria were isolated from these units while they were mounted on water distribution system in order to determine the variations in HPC and diversity of the bacterial population using polymerase chain reaction (PCR). Results showed that bacterial population regrowth in PoU units could increase HPC exceeding the limit of the 500  CFU/mL in outlet water. In around 70% of the input water samples, the HPC was less than 500 CFU/ml with a mean of 226.7 (CI 95%: 28.1...
Source: Journal of Environmental Health Science and Engineering - February 16, 2021 Category: Environmental Health Source Type: research

Evaluation of some chelating agents on phytoremediation efficiency of Amaranthus caudatus L. and Tagetes patula L. in soils contaminated with lead
ConclusionsAlthough the results obtained showed thatT. patula would have a better phytoextraction potential thanA. caudatus, it should be noted that due to the Pb behavior in the soil and/or leaching of Pb from the soil columns during the irrigation period the low amounts of Pb absorption by the root and aerial parts of the plants compared to the added doses of Pb(NO3)2 solution to the soil samples, imply the studied plants haven ’t the adequate potential for phytoextraction of Pb from contaminated soils. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - February 12, 2021 Category: Environmental Health Source Type: research

Novel antimicrobial bioplastic based on PLA-chitosan by addition of TiO 2 and ZnO
ConclusionIn general, the addition of chitosan-ZnO into in PLA-based bioplastic produces better antimicrobial properties compared to TiO2. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - February 10, 2021 Category: Environmental Health Source Type: research

A comparative study on antibacterial activity of carvacrol and glutaraldehyde on Pseudomonas aeruginosa and Staphylococcus aureus isolates: an in vitro study
In conclusion by comparing the results of carvacrol and glutaraldehyde, seem that carvacrol, as an herbal and natural agent, may be a suitable alternative to glutaraldehyde in hospital equipment’s’ sterilization. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - February 10, 2021 Category: Environmental Health Source Type: research

The analysis and probabilistic health risk assessment of acrylamide level in commercial nuggets samples marketed in Iran: effect of two different cooking methods
AbstractThe aim of current study was to evaluate the acrylamide level in chicken, meat and shrimp nugget samples cooked in both traditional and industrial methods using “Quick, Easy, Cheap, Effective, Rugged, and Safe” QuEChERS extraction and gas chromatography-flame-ionization detection (GC-FID). Results revealed the traditional frying method has significant effect on the increase of acrylamide compared to industrial frying method and it was also found that th e different cooking temperatures and time have significant effect on increase of acrylamide formation (p <  0.05), but type of edible oils had no signifi...
Source: Journal of Environmental Health Science and Engineering - February 6, 2021 Category: Environmental Health Source Type: research

Bacteriocin activity of various iranian honey ‐associated bacteria and development of a simple medium for enhanced bacteriocin activity
ConclusionsFindings of this study supported the folkloric application of honey against some infectious diseases.B.subtilis SB1 that isolated from Sabalan honey was a potential source for bacteriocins-like compounds. Our studies suggested a simple buffered nitrogen-based medium for SB1 growth and bacteriocin activity in both shake flask and bioreactor. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - February 4, 2021 Category: Environmental Health Source Type: research

Monitoring and prediction of dust concentration in an open-pit mine using a deep-learning algorithm
ConclusionThis model can be applied to the prediction of dust concentrations in open-pit mines and provide guidance on when to carry out dust-suppression work. It has expansibility and is potentially valuable for application in a wide range of areas. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - February 3, 2021 Category: Environmental Health Source Type: research