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Variation of Some Marine Environmental Factors in Can Gio, Ho Chi Minh, South Vietnam
Nguyen Hoang Thai,
Nguyen Phi Uy Vu,
Bui Duc Linh,
Ho Van The
Issue:
Volume 8, Issue 6, December 2020
Pages:
181-186
Received:
8 October 2020
Accepted:
21 October 2020
Published:
30 October 2020
Abstract: The paper presents the results of monitoring some basic environmental factors in the Can Gio environmental monitoring station in the period 2009-2019. The environmental parameters like temperature, salinity and pH, total suspended solids, dissolved oxygen, biochemical oxygen demand, nutrient concentrations (NH4+-N, PO43--P) were collected and analyzed twice a month (both of high tide and low tide). Based on the results at the two monitoring stations, the coastal water quality in the study area changes seasonally, especially depends on the tide. The combination of rainy season and the low tide created a falling in the parameters of salinity and dissolved oxygen, whereas total suspended solids was high. Water temperature was found to be in the range of 27-30.6°C; salinity ranged between 20 and 29.5‰. The pH were found to be neutral and had decreasing features in recent years, whereas salinity was opposite. The recorded variation dissolved oxygen concentration in the study area was 3.9–5.9 mg.l-1, with the lowest level at low tide. Generally, the environment in the study area was not polluted yet. However, at Long Hoa station C2, the value of of biochemical oxygen demand, phosphate and ammonia were higher than these which in Cau Den station C1. This shows that Can Gio area has a potential risk of partial pollution.
Abstract: The paper presents the results of monitoring some basic environmental factors in the Can Gio environmental monitoring station in the period 2009-2019. The environmental parameters like temperature, salinity and pH, total suspended solids, dissolved oxygen, biochemical oxygen demand, nutrient concentrations (NH4+-N, PO43--P) were collected and analy...
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Natural Radioactivity Level of 238U, 232Th, and 40K in Baby Food and Committed Annual Effective Dose Assessment in Bangladesh
Khadiza Begam,
Mohammad Moshiur Rahman,
Mohammad Alamgir Kabir,
Umma Tamim,
Syed Mohammod Hossain,
Afia Begum
Issue:
Volume 8, Issue 6, December 2020
Pages:
187-192
Received:
8 October 2020
Accepted:
24 October 2020
Published:
4 November 2020
Abstract: Worldwide, the contagion of chronic diseases like diabetes and cancer among children has made the nutritionists thoughtful. Food contamination with radioactivity, became a severe health threat for children below five since they are under developing immune systems and cannot fight off infections like adults. Radioactivity concentrated in food chain may be transferred to human body and increase the cumulative risk of developing cancer and some other diseases. Therefore the assessment of radioactivity levels in baby food and their associated doses are of crucial importance for health safety. The study is focused on the radiation contamination of baby food due to the nuclear disasters and make public awareness about infant’s nutrition followed by the health safety. The natural radioactivity level due to 238U, 232Th and 40K in baby food (cereals and powder milk) samples, marketed in Bangladesh were estimated and annual effective dose was assessed. Gamma spectrometry was performed by HPGe detector coupled with MCA, and certified reference materials were used for quantification and quality control. The average concentrations of 238U, 232Th and 40K were found to be 5.42±0.42, 5.71±0.50 and 334.4±12 Bq.Kg-1 in milk sample and 2.98±0.38, 3.94±0.29 and 155.7±7.5 Bq.Kg-1 in cereal sample respectively. The committed effective doses due to ingestion of natural radionuclides (238U, 232Th and 40K) from the consumption of milk and cereals for age group <1 year were 1.30 and 0.51 mSv/yr and for age group 1-2 year were 0.31 and 0.15 mSv/yr respectively. The age group < 1yr, who are completely depend on formula milk are under highly threat since their annual effective dose 1.30 mSv/yr exceeds the recommended permissible limit of 1 mSv/yr. The data generated in this study will provide base-line radiometric values of activity concentration and annual effective dose attributed from baby foods in Bangladesh.
Abstract: Worldwide, the contagion of chronic diseases like diabetes and cancer among children has made the nutritionists thoughtful. Food contamination with radioactivity, became a severe health threat for children below five since they are under developing immune systems and cannot fight off infections like adults. Radioactivity concentrated in food chain ...
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Environmental Impact Assessment of Soil Pollution in Industrial Zones
Salim Rabee Znad,
Mazin Nazar Fadhel
Issue:
Volume 8, Issue 6, December 2020
Pages:
193-201
Received:
16 October 2020
Accepted:
11 November 2020
Published:
23 November 2020
Abstract: The study area is the city of Mosul, which is located in the north-western part of Iraq and study aims to determine the level of heavy metal contamination in the main industrial areas of Mosul City, northern Iraq, where 12 samples collected Only soil samples had been collected with depth (0-15) cm by using a homemade soil sampler in industrial zone. Samples was carried in January 2019. First of all, samples were air-dried in natural condition, and the debris of animals and plants had been cleaning by hands. Samples grind and pass through a sieve (2mm), so they ready to measure. and analyzed from the industrial soil areas (6 samples from the soil of the Okab industry- west of Mosul City) and (6 samples from the soil of the Karama Industry-East of Mosul City), the soil was at depth (0-15) cm and analyzed by the X-ray Fluorescence for 8 metals included (Pb, As, Cd, Ni, Cr,). The GIS10.6.1 ArcMap program was used to draw the environmental maps of each metals and to determine the extent of these metals and their impact on neighboring regions The results obtained for heavy metals and compared to the WHO, 2003 and these areas are already contaminated with (Ni, Cr, As) metals that have Exceeded the specified values. In addition, Pb and Cd elements are within the allowed values.
Abstract: The study area is the city of Mosul, which is located in the north-western part of Iraq and study aims to determine the level of heavy metal contamination in the main industrial areas of Mosul City, northern Iraq, where 12 samples collected Only soil samples had been collected with depth (0-15) cm by using a homemade soil sampler in industrial zone...
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The Challenge of Oil Spill Monitoring and Control in Nigeria
Issue:
Volume 8, Issue 6, December 2020
Pages:
202-207
Received:
26 November 2020
Accepted:
11 December 2020
Published:
28 December 2020
Abstract: Oil has been a fundamental enabler of development. Be this as it may, the emergence of the green environment movement, catalyzed by the challenge of climate change, has called into question the significance of crude oil as a source of energy. This has necessitated the need to manage the environmental impact of oil. One area needing attention is oil spill monitoring and control. Several technological systems have been developed in order to monitor and subsequently control oil spills. These include acoustic emission sensoring, infrared sensoring, fibre optic sensoring, satellite remote sensoring and remotely-piloted aircrafts. Nigeria, where oil spill is a major challenge, requires an effective management of oil spills. In realization of this, regulatory agencies such as National Oil Spill Detection and Response Agency and detailed guidelines for effective oil spill monitoring and control have emerged. Be this as it may, weak regulation by government agencies has been exploited by oil companies and communities; resulting in frequent oil spills, large quantities of spilled oil, extensiveness of polluted areas and persistence of the impact of spilled oil. Oil spills occur frequently. For instance, there were 5,848 incidents resulting in the spillage of about 169,691 barrels of oil between 2010 and 2018. Spills occur in all parts of the oil producing region, the Niger Delta; resulting in its being commonly described as the most polluted area of the planet. The impact of spills is usually enduring because many spill sites are either not cleaned or cleaned ineffectively. Effective regulation and a more environment-friendly oil spill monitoring and control through technological applications are necessary.
Abstract: Oil has been a fundamental enabler of development. Be this as it may, the emergence of the green environment movement, catalyzed by the challenge of climate change, has called into question the significance of crude oil as a source of energy. This has necessitated the need to manage the environmental impact of oil. One area needing attention is oil...
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