scholarly journals Effects of dust phenomenon on heavy metals in raw milk in western Iran

2020 ◽  
Vol 8 (2) ◽  
pp. 241-249
Author(s):  
Elahe Karimi ◽  
Monireh Yari ◽  
Hori Ghaneialvar ◽  
Hamid Reza Kazemi ◽  
Reza Asadzadeh ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Laser System ◽  
High Volume ◽  
Raw Milk ◽  
Potential Effect ◽  
Dust Particles ◽  
Western Iran ◽  
Lead Levels ◽  
One Year ◽  
Dust Monitor

Introduction. After the Iraq war, the dust phenomenon has increased in western Iran. Our study aimed to evaluate the effect of the dust phenomenon on the content of heavy metals in raw milk in Ilam province. Study objects and methods. The dust samples were collected during one year. The concentrations of dust particles were determined with the Enviro Check Laser System, using the Dust Monitor Check. The concentration of heavy metals in dust was determined by using the high volume air samplers and glass fiber filters. Results and discussion. Heavy metals (lead, arsenic, zinc, copper, and iron) were measured at four sampling sites in raw milk by the atomic absorption method. The mean and standard deviations of dust particulate matter (PM10 and PM2.5) were 105.6 ± 90.5 and 25.9 ± 15.4 μg/m3, respectively. The amounts of arsenic, zinc, lead, and copper were higher in the spring and summer. Lead levels in western and southern regions were higher than those in the east, center, and north. Conclusion. We found similar trends for arsenic, zinc, copper, and iron in raw milk. Our results showed the potential effect of the dust phenomenon on the presence of heavy metals in raw milk.

Abstract 11974: Impact of Routine ECPR Service on Availability of Donor Organs

Circulation ◽  
2021 ◽  
Vol 144 (Suppl_2) ◽  
Author(s):  
Jana Smalcova ◽  
Katerina Rusinova ◽  
Iván Ortega-Deballon ◽  
Eva Pokorna ◽  
Ondrej Franek ◽  
...  
Keyword(s):  
Cardiac Arrest ◽  
Single Case ◽  
Organ Donor ◽  
High Volume ◽  
Donation After Cardiac Death ◽  
Daily Routine ◽  
Organ Donors ◽  
Extracorporeal Cardiopulmonary Resuscitation ◽  
One Year ◽  
Transplanted Organs

Introduction: In refractory cardiac arrest, extracorporeal cardiopulmonary resuscitation (ECPR) may increase the chance of survival. However, in brain death or donation after cardiac death scenario, ECPR may also become an important organ donor source. Hypothesis: We hypothesized that 1/ the implementation of ECPR into the daily routine of a high volume cardiac arrest centre might increase the availability of organ donors, and 2/ ECPR might assure the same long-term function of donated organs as non-ECPR care. Methods: We retrospectively evaluated pre-ECPR (2007-2011) and ECPR (2012-2020) periods in terms of donors recruited from the out-of-hospital and in-hospital cardiac arrest population. We assessed the number of donors referred, the number of organs harvested and their one- and five-year survival. Results: In the pre-ECPR period, 11 donors were referred, of which 7 were accepted. During the ECPR period, the number of donors increased to 80, of which 42 were accepted. The number of donated organs in respective periods were 18 and 119, corresponding to 3,6 vs 13,2 (p =0.033) organs per year harvested. One-year survival of transplanted organs was 94.4% vs 100%, and five-year survival was 94.4% vs 87,5%, in relevant periods. Survival of organs obtained from donors after CPR and ECPR at one year (98.9% vs 100%) and five years (90,2% vs 88.9%) was the same. Graft failure was not the cause of death in any single case. Conclusions: Establishing a high volume cardiac arrest/ECPR centre may lead to a higher number of potential and subsequently accepted organ donors. The length of survival of donated organs is high and comparable between ECPR vs non-ECPR cardiac arrest donors.

scholarly journals Composition of raw milk from conventional and organic dairy farming

2016 ◽  
Vol 32 (2) ◽  
pp. 133-143 ◽  
Author(s):  
Denis Kucevic ◽  
Snezana Trivunovic ◽  
Vladan Bogdanovic ◽  
Ksenija Cobanovic ◽  
Dobrila Jankovic ◽  
...  
Keyword(s):  
Statistical Significance ◽  
Raw Milk ◽  
Farming System ◽  
Dairy Farming ◽  
Milk Samples ◽  
High Statistical Significance ◽  
Significant Difference ◽  
Organic Dairy ◽  
One Year ◽  
The Impact

Possible differences between composition of raw milk due to dairy farming system (organic vs conventional) as well as seasonal variations were investigated. The samples were analysed during one year. A total of 6.782 samples of raw milk were collected (4.496 from organic farming). Dairy farms were located in the northern part of Republic of Serbia (Province of Vojvodina). The principle of analysis of raw milk samples was in accordance with the methodology by midinfrared spectrometry and flow cytometry. The fixed effect of system of farming and season (winter, spring, summer and fall) have shown a high statistical significance (P < 0.01) on all examined milk parameters except fat, total solids and somatic cell count, where the impact was slightly lower (P < 0.05). Significant difference wasn't found in number of bacterial colonies (P > 0.05). Composition of milk is also affected by a number of other factors, therefore it is recommended to involve factors such as nutrition of dairy cows, breed and farm management.

scholarly journals Evaluating the Safety and Efficacy of a Highly Viscous 33-mg/mL Hyaluronic Acid Volumizing Filler in the Treatment of Facial Wrinkles: An Open-Labeled, Clinical Trials

2019 ◽  
Vol 8 ◽  
pp. e1148
Author(s):  
Elnaz Razavian ◽  
Setareh Tehrani
Keyword(s):  
Hyaluronic Acid ◽  
High Volume ◽  
Soft Tissue Augmentation ◽  
Nodule Formation ◽  
Safety And Efficacy ◽  
Significant Correction ◽  
Clinically Significant ◽  
One Year ◽  
First Time

Background: The 33-mg/mL hyaluronic acid (HA) formulation is a highly concentrated, cross-linked, cohesive, smooth, and completely reversible volumizing filler approved by Conformité Européene. For the first time, we aimed to evaluate the long-term efficacy and safety of the 33-mg/mL HA filler for soft tissue augmentation in the treatment of facial wrinkles. Materials and Methods: After optimal wrinkle correction was achieved in the patients undergoing treatment by injecting the 33-mg/mL HA filler at the injection site plus one touch-up at a 2-week interval, the safety and efficacy of the filler were assessed on the 5-point Facial Volume Loss Scale through the 1-year study period. Patients were evaluated daily for 14 days and after 6 and 12 months post-treatment. Results: A total of 86 subjects were treated. The mean wrinkle scores of the patients were 3.95+0.79 (range of 3-5) before treatment, 2.3+0.94 (range 1-5) six months after treatment, and 2.93+1.29 (range of 1-5) one year after treatment. Clinically significant mean wrinkle correction (P=0.001) was still evident at>12 months of treatment through 33-mg/mL HA formulation. A clinically significant correction at>12 months after treatment was maintained by 79% of patients. Nodule formation and swelling were more frequent when the 33-mg/mL HA filler was used compared with the use of less concentrated HA fillers. One patient developed angioedema-like swelling and induration last few months. Conclusion: The 33-mg/mL HA filler can provide long-term correction lasting for one year or more. Adverse effects, especially swelling and nodule formation were more common in this filler compared with less concentrated HA fillers. The side effects were correlated with the volume of the injected filler. We recommend using this concentration with low volume or combining high volume with lower concentration. [GMJ.2019;8:e1148]

scholarly journals Spatial distribution of heavy metals in surface sediments of Kalametiya Lagoon in southern Sri Lanka; insight towards pollution status and socio-economic interactions

2021 ◽  
Author(s):  
Sunanda Kodikara ◽  
Hossein Tiemoory ◽  
Mangala Chathura De Silva ◽  
Pathmasiri Ranasinghe ◽  
Sudarshana Somasiri ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Spatial Distribution ◽  
Sri Lanka ◽  
Suspended Sediments ◽  
Potential Effect ◽  
Toxic Heavy Metals ◽  
Threshold Effect Level ◽  
Effect Level ◽  
Economic Interactions

Abstract Heavy metal (HM) pollution has become a serious threat to coastal aquatic ecosystems. This study, therefore, aimed at assessing the spatial distribution of selected heavy metals/metalloids including Arsenic (As), Cadmium (Cd), Chromium (Cr), Lead (Pb), and Mercury (Hg) in surface sediment (0–15 cm) samples collected across Kalametiya Lagoon in southern Sri Lanka. Forty-one (41) grid points of the lagoon were sampled and the sediment samples were analyzed for HM content by using ICP-MS. A questionnaire survey was carried out to investigate the possible sources for HM pollution in Kalametiya Lagoon. Water pH and salinity showed significant variation across the lagoon. Overall mean value of pH and salinity were 6.68 ± 0.17 and 2.9 ± 2.2 PSU respectively. The spatial distribution of the heavy metals was not monotonic and showed a highly spatial variation. The kernel density maps of the measured heavy metals demarcated several different areas of the lagoon. The mean contents of As, Cd, Cr, Hg, and Pb were lower than that of threshold effect level (TEL) however, higher for Hg at the North Inlet. Nevertheless, it was still lower than potential effect level (PEL). Socio-economic interactions have dramatically reduced during the past two decades. Industrial sewage, river suspended sediments and agrochemicals such as fertilizers, pesticides were reportedly identified as the possible sources for heavy metal loads. Accumulation of toxic heavy metals can be minimized by detouring the water inflow to the lagoon.

scholarly journals The Occurrence, Pathways, and Risk Assessment of Heavy Metals in Raw Milk from Industrial Areas in China

Toxics ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 320
Author(s):  
Chuanyou Su ◽  
Yanan Gao ◽  
Xueyin Qu ◽  
Xuewei Zhou ◽  
Xue Yang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Atomic Absorption ◽  
Inductively Coupled Plasma ◽  
Graphite Furnace ◽  
Hazard Index ◽  
Raw Milk ◽  
Atomic Fluorescence Spectrometry ◽  
Industrial Areas ◽  
Flame Atomic Absorption

This study evaluated chromium (Cr), arsenic (As), cadmium (Cd), and lead (Pb) contamination in raw milk from industrial areas in China, identified the possible pathways of heavy metals from the environment to raw milk, and made a risk assessment of the consumption of heavy metals from milk consumption. The Cr, As, Cd, and Pb concentrations in raw milk, water and silage were analyzed using inductively coupled plasma mass spectrometry. The Cr and As in soil were analyzed by flame atomic absorption spectrometry and atomic fluorescence spectrometry, respectively. Cd and Pb in soil were determined by a Graphite furnace atomic absorption spectrophotometer. The Cr and As concentrations in milk from industrial areas were 2.41 ± 2.12 and 0.44 ± 0.31 μg/kg, respectively, which were significantly higher (p < 0.01) than those from non-industrial areas, which had levels of 1.10 ± 0.15 and 0.25 ± 0.09 μg/kg, respectively. Chromium was mainly transferred through the soil-silage-milk pathway, As was transferred through the water-silage-milk pathway, while Cd was mainly transferred through the soil (water)-silage-milk pathway. The contributions of each metal to the overall hazard index (HI) followed a descending order of As, Cr, Pb, and Cd, with values of 46.64%, 25.54%, 24.30%, and 3.52%, respectively. Children were at higher risk than adults.

Interlaboratory Comparison of Analyses for Heavy Metals in Clam Tissue

1986 ◽  
Vol 69 (5) ◽  
pp. 863-868
Author(s):  
Marilyn R Hendzel ◽  
Bruce W Fallis ◽  
Brigitte G E Demarch
Keyword(s):  
Heavy Metals ◽  
Coefficient Of Variation ◽  
Interlaboratory Comparison ◽  
Interlaboratory Study ◽  
Oyster Tissue ◽  
Coefficients Of Variation ◽  
Freeze Dried ◽  
Lead Levels ◽  
Clam Tissue ◽  
Cu And Zn

Abstract Results are reported for an interlaboratory study conducted to assess the reproducibility of analyses for lead, copper, cadmium, and zinc. The 10 participating laboratories analyzed 2 samples of freeze-dried clam tissue and 1 disguised sample of NBS Oyster Tissue. Interlaboratory variations were observed for all metals, although the methods yielded reproducible data for Cu and Zn with average interlaboratory coefficients of variation of 15 and 11%, respectively. The performance of methods used for Cd and, more so, for Pb was less than satisfactory. Cadmium levels in the 3 samples ranged from about 0.7 to 3.7 ppm with an average interlaboratory coefficient of variation (CV) of 24%. Lead levels in the 3 samples were about 0.5 ppm with an interlaboratory CVof 68%. Some laboratories' results were consistently high or low but data were insufficient to relate these trends to one particular variable. Results from this study were compared with 5 other studies reported in the literature since 1980. Coefficients of variation from all studies were comparable for samples with similar metal concentrations

Treatment of gully pot liquor containing heavy metals with constructed wetlands in Scotland

2005 ◽  
Vol 51 (9) ◽  
pp. 251-258 ◽  
Author(s):  
M. Scholz ◽  
P. Anderson ◽  
B.I. Forman
Keyword(s):  
Heavy Metals ◽  
Oxygen Demand ◽  
Copper Nitrate ◽  
Common Reed ◽  
Cold Climate ◽  
Water Runoff ◽  
Treatment Standards ◽  
Copper Nickel ◽  
One Year ◽  
Nickel Leaching

The aim of this investigation was to assess the treatment efficiencies for gully pot liquor of 12 experimental vertical-flow constructed wetland filters containing Phragmites australis (Cav.) Trin. ex Steud. (Common Reed) and filter media of different adsorption capacities in a cold climate. Seven of the twelve filters received inflow water spiked with heavy metals. For one year, hydrated copper nitrate and hydrated nickel nitrate were added to sieved gully pot liquor to simulate contaminated primary treated storm water runoff. The inflow concentrations for dissolved copper, nickel and nitrate-nitrogen were approximately 1.0, 1.0 and 1.45 mg/l, respectively, which represent mean loading rates of 0.063 g/m2/d for Filters 2 and 7 to 11, and 0.115 g/m2/d for Filter 12. For these filters receiving metals, an obvious breakthrough of dissolved nickel was recorded after road gritting and salting during winter. Sodium chloride was responsible for nickel leaching. Reductions of copper, nickel, biochemical oxygen demand and suspended solids were frequently insufficient compared to international secondary wastewater treatment standards. Moreover, the overall filtration performance for all filters was similar.

scholarly journals Predicting children's blood lead levels from exposure to school drinking water in Addis Ababa, Ethiopia

2020 ◽  
Vol 18 (4) ◽  
pp. 595-601
Author(s):  
Dawit Debebe ◽  
Fiseha Behulu ◽  
Zerihun Getaneh
Keyword(s):  
Heavy Metals ◽  
Drinking Water ◽  
Water Supply ◽  
Addis Ababa ◽  
Blood Lead ◽  
World Health ◽  
Blood Lead Levels ◽  
Human Beings ◽  
Lead Levels ◽  
The City

Abstract Human beings could be exposed to impacts associated with heavy metals such as lead (Pb) through drinking water. The objective of this study was to evaluate quality of water consumed by kindergarten school children in Addis Ababa city, who are highly susceptible to issues related to heavy metals in water. Through conducting chemical analysis, using microwave plasma atomic emission spectrophotometry (MP-AES), the level of lead (Pb) was measured at 38 selected schools in the city. Drinking water samples were taken from three water supply sub-systems: Akaki, Legedadi, and Gefersa. Results revealed the average Pb concentration in the city was 62.37 μg/L which is significantly higher than the World Health Organization (WHO) recommended threshold value of 10 μg/L. The children's blood lead levels and exposure to Pb were also calculated using the integrated exposure uptake bio-kinetic (IEUBK) model as per USEPA guidelines. Estimated geometric mean blood lead levels (BLLs) for each school ranged from 4.4 to 13.2 μg/dL. On average, the model predicted that 20% of children in the city will have blood lead levels above the WHO recommended 10 μg/dL. The study can be considered as an unprecedented piece of work as it addresses critical issues and methods to mitigate problems caused by high concentration of Pb in water supply distribution infrastructure.

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