ENVIRONMENTAL CONTAMINANTS REVIEWS最新文献_第2页

PHYSICOCHEMICAL ANALYSIS OF SAMPLES OF WATER FOR DRINKING AND SANITARY PURPOSES IN SELECTED SCHOOLS IN PARTS OF RIVERS STATE, NIGERIA 尼日利亚河流州部分地区选定学校饮用水和卫生用水样本的物理化学分析

ENVIRONMENTAL CONTAMINANTS REVIEWS Pub Date : 2022-01-01 DOI: 10.26480/ecr.02.2022.72.77

E. E. E., Ngah, S. A., A. T. K. S, U. I. U.

{"title":"PHYSICOCHEMICAL ANALYSIS OF SAMPLES OF WATER FOR DRINKING AND SANITARY PURPOSES IN SELECTED SCHOOLS IN PARTS OF RIVERS STATE, NIGERIA","authors":"E. E. E., Ngah, S. A., A. T. K. S, U. I. U.","doi":"10.26480/ecr.02.2022.72.77","DOIUrl":"https://doi.org/10.26480/ecr.02.2022.72.77","url":null,"abstract":"The quality of water depends on the physicochemical and microbial characteristics. This study was carried out to analyze the quality of water for drinking and sanitary purposes in selected schools in part of Rivers State, Nigeria and was carried out using 30 water samples from 30 different schools selected randomly. Parameters analyzed include potency of hydrogen (PH), electrical conductivity (EC), turbidity, salinity, total dissolved solids (TDS), concentration of nitrate, sulphate, chloride, magnesium, calcium and some heavy metals: iron, copper, zinc, lead and manganese. The results obtained were compared with standards prescribed by World Health Organization (WHO) and Standard Organization of Nigeria (SON), the PH values range between 3.78 and 7.72 for the water samples, thus are said to be acidic and not good for drinking, salinity values range from 0.018 – 0.202mg/l which makes the water very suitable for sanitary purposes and electrical conductivity values range from 38.8 – 378.7μS/cm. Other physiochemical parameters analyzed are within WHO and SON standard for drinking water except for magnesium for which 67% of the samples have elevated values ranging from 0.27 – 3.38mg/l, above the allowable limit stipulated by WHO and SON. All heavy metals present in the water samples are within the WHO and SON limits, making the water virtually free from dangers to the human body posed by the presence of heavy metals. The knowledge from this study can be applicable in water resources, environmental and health management as well as in hydrological activities.","PeriodicalId":11882,"journal":{"name":"ENVIRONMENTAL CONTAMINANTS REVIEWS","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83214572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

EVALUATION OF TOXIC ELEMENTS IN GROUNDWATER IN THE INDUSTRIES AREA OF NNEWI NORTH SOUTH-EASTERN NIGERIA 尼日利亚东北部奈威工业区地下水中有毒元素的评价

ENVIRONMENTAL CONTAMINANTS REVIEWS Pub Date : 2022-01-01 DOI: 10.26480/ecr.01.2022.31.34

Ifeanyichukwu K.A, Okolo, C.M., O. A.

引用次数: 1

STUDY OF THE DETERIORATION OF MEDICINAL PLANTS IN THE BOUTRABA AREA OF AL-JABAL AL-AKHDAR IN LIBYA 利比亚al-jabal al-akhdar地区boutraba地区药用植物退化的研究

ENVIRONMENTAL CONTAMINANTS REVIEWS Pub Date : 2022-01-01 DOI: 10.26480/ecr.02.2022.57.63

Mabroka Sulaiman Mohammad AL-Hammaly

{"title":"STUDY OF THE DETERIORATION OF MEDICINAL PLANTS IN THE BOUTRABA AREA OF AL-JABAL AL-AKHDAR IN LIBYA","authors":"Mabroka Sulaiman Mohammad AL-Hammaly","doi":"10.26480/ecr.02.2022.57.63","DOIUrl":"https://doi.org/10.26480/ecr.02.2022.57.63","url":null,"abstract":"The study dealt with the deterioration in the vegetation cover for medicinal plants and draining it in the Boutraba region , as it is an area where many plant species are used in the treatment and installation of many types of medicinal drugs , the scope of this study is located within of the Mediterranean climate in the Jabal AL-Akhdar region on the first edge in the north- Eastern Libya, which is known for its abundance of annual plants, in which annual plants are associated with rain, as their number increases with the increase in the amount of rainfall. The vegetation cover in the Boutraba region is characterized by the presence of types of annual herbal plants and longitudinal perennials. The study showed the presence of 10 types of medicinal and aromatic plants distributed over 3 families, 4 genera, de-seeded 1 and covered with seeds. It includes dicotyledonous plants 7 species and contains 7 genera, while monocotyledonous plants, while monocotyledonous plants include one family containing two species and two sexes. Cotyledonous plants include 1 type 1 and contain On genus 1, where the risk of deterioration of the vegetation cover due to natural and human factors led to its deterioration and depletion.","PeriodicalId":11882,"journal":{"name":"ENVIRONMENTAL CONTAMINANTS REVIEWS","volume":"354 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76457151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CRUSTACEAN WASTE SHELLS AS ADSORPTION MATERIALS FOR HEAVY METALS IN AN AQUEOUS SOLUTION 甲壳类动物废壳对水中重金属的吸附材料

ENVIRONMENTAL CONTAMINANTS REVIEWS Pub Date : 2020-11-30 DOI: 10.26480/ecr.02.2021.33.35

Queency P. Padida, Rolando V. Maningas, Christian Paul P. dela Cruz, Lustina P. Lapie, Nilda S. Alforja

{"title":"CRUSTACEAN WASTE SHELLS AS ADSORPTION MATERIALS FOR HEAVY METALS IN AN AQUEOUS SOLUTION","authors":"Queency P. Padida, Rolando V. Maningas, Christian Paul P. dela Cruz, Lustina P. Lapie, Nilda S. Alforja","doi":"10.26480/ecr.02.2021.33.35","DOIUrl":"https://doi.org/10.26480/ecr.02.2021.33.35","url":null,"abstract":"Laguna de Bay is one of the country's major lakes, providing a third of the fish consumed by Metro Manila's 16 million residents. It also provides support for agriculture, industry, and hydropower generation, as well as providing a welcome respite for many Filipinos. However, because of the lake's importance, it is threatened by a variety of issues, including pollution. Heavy metals such as mercury and lead are present in high concentrations in the lake. And these heavy metals may persist in fish, water, air and the human body. As a result, an adsorption technique for heavy metal removal in an aqueous solution was investigated. As an adsorbent, the produced chitosan from crustacean waste shells was employed. The study's parameters were contact time, adsorbent quantity, and pH. Results showed that 0.5 g of chitosan has a higher absorption rate of 99% in 500 mg/L solutions compared to 1.0 g of chitosan with an adsorption rate of 98%. In terms of contact time, 60 minutes showed almost 100% adsorption rate while 120 minutes was 98%. With increasing pH, the amount of metal adsorption rises. This developed chitosan from crustacean waste shells indicates high capacity as adsorbent materials for heavy metals. As a result, it appears to be a viable material for water treatment.","PeriodicalId":11882,"journal":{"name":"ENVIRONMENTAL CONTAMINANTS REVIEWS","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77254142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

APPRAISAL OF SNOW IN CONTEXT OF TEMPERATURE VARIATIONS IN GILGIT BASIN 吉尔吉特盆地温度变化背景下的降雪评价

ENVIRONMENTAL CONTAMINANTS REVIEWS Pub Date : 2020-11-30 DOI: 10.26480/ecr.01.2021.01.07

A. Shehzadi, Syed Amer Mehmood, H. Aeman, S. Batool

引用次数: 0

THE INITIAL ION EFFECT OF HEAVY METALS ADSORPTION BY USING HYDROTHERMAL CARBONIZATION BANANA PEELS 水热碳化香蕉皮对重金属吸附的初始离子效应

ENVIRONMENTAL CONTAMINANTS REVIEWS Pub Date : 2020-11-30 DOI: 10.26480/ecr.01.2021.08.10

Nurhaliza Said Mohd, R. Mohamed

{"title":"THE INITIAL ION EFFECT OF HEAVY METALS ADSORPTION BY USING HYDROTHERMAL CARBONIZATION BANANA PEELS","authors":"Nurhaliza Said Mohd, R. Mohamed","doi":"10.26480/ecr.01.2021.08.10","DOIUrl":"https://doi.org/10.26480/ecr.01.2021.08.10","url":null,"abstract":"Accumulation of heavy metals in water is of particularly important because it can impact upon human health through possible contamination of food. The use of banana peel was investigated. Hydrothermal carbonization (HTC) was chosen as alternative process. The objective of this project is to synthesize banana peel hydrochars adsorbent via HTC process and to evaluate the heavy metals adsorption performance of banana peel hydrochars adsorbent. Conventional methods in removal of heavy metals require high operational cost, need highly skilled labour, and generate sludge at the end of the operation. Compared to other techniques, banana peel absorbent is a cost- effective adsorbent, easy to operate, environmentally safe and no health risk for the operator. Besides, large quantity of banana peel waste contributes to its significant disposal problem. Thus, this study is expected to solve problems of banana peel, by preparing banana peel adsorbent through hydrothermal carbonization. There are three phases in this project, phase 1 which is synthesis of banana peel based on hydrochars, banana peel was chopped the peels into small pieces. It was then soaked in KOH solution for 2hours and transferred into PTFE and heat for 2hours at 230°C. For phase 2, physico-chemical characterization of banana peels hydrochars by using FTIR. The result obtained shown that all of the content in banana peels will activate the surface of banana peel to enhance the adsorption of the heavy metals. For the final phase, by using AAS, the initial and final concentration of the metals was tested to determine the removal of heavy metals by the prepared hydrochars. The results showed that the removal capacity of the hydrochars increased when the initial concentration of the metals increased. From the research, it can be concluded that, as the initial concentration of the metals higher, the ability of the hydrochars to remove the metals also higher and stronger.","PeriodicalId":11882,"journal":{"name":"ENVIRONMENTAL CONTAMINANTS REVIEWS","volume":"IM-30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84739695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

EFFECTIVE REMOVAL OF TEXTILE DYES USING PRE-TREATED NATURAL ADSORBENTS 使用预处理的天然吸附剂有效去除纺织染料

ENVIRONMENTAL CONTAMINANTS REVIEWS Pub Date : 2020-11-30 DOI: 10.26480/ecr.01.2021.19.23

Ch. Arslan, M. Hasnain, W. Tariq

引用次数: 0

SCENARIO OF ASPERGILLUS INDOOR CONTAMINATION IN PAKISTAN (2000- 2020) – A REVIEW 巴基斯坦室内曲霉污染情景(2000- 2020)综述

ENVIRONMENTAL CONTAMINANTS REVIEWS Pub Date : 2020-11-30 DOI: 10.26480/ecr.01.2021.24.28

Sundas Shafique, S. Mukhtar, U. Hani, S. Iram

{"title":"SCENARIO OF ASPERGILLUS INDOOR CONTAMINATION IN PAKISTAN (2000- 2020) – A REVIEW","authors":"Sundas Shafique, S. Mukhtar, U. Hani, S. Iram","doi":"10.26480/ecr.01.2021.24.28","DOIUrl":"https://doi.org/10.26480/ecr.01.2021.24.28","url":null,"abstract":"Bioaerosols in indoor environment include substantial portion of fungi which are considered as “hidden killers”. Pakistan like other countries, also bears the atrocities of fungi and their mycotoxins and suffers more due to its favourable climate, weak economy and unawareness. Genus Aspergillus of Fungi is quite important and is predominant in indoor environment, along with Penicillium. There are not adequate research studies on the indoor micro-floral composition, however, the available data shows that numerous Aspergillus species are found inside the buildings whether they be houses, hospitals, laboratories, cafeteria or slaughterhouses. The mycotoxins produced by Aspergillus species include aflatoxins, fumonisins, citrinin, ochratoxins and cyclopiazonic acid. They are mainly carcinogenic and cause various diseases like aflatoxicosis, pentaketide nephrotoxin, and necrosis. To avoid such issues, fungal growth should be avoided by controlling temperature and humidity. In addition, fungicides, ultraviolet radiation or essential oils can be used against fungi. The condition of the buildings can also be adjusted to minimize fungal growth like building material, ventilation system, wall paint and hygiene. The database of the country is not satisfactory with insignificant laws and regulation. To estimate the potential risks of Aspergillus species and their mycotoxins, regular monitoring is required at all levels. It will also help to devise solutions related to health and environment related problems.","PeriodicalId":11882,"journal":{"name":"ENVIRONMENTAL CONTAMINANTS REVIEWS","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84137709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

EVALUATION OF TREATMENT OF DOMESTIC WASTEWATER USING EICCHORNIA CRASSIPES AND PISTA STRATIOTES BY PHYTOTECHNOLOGIES 植物技术处理生活污水的评价

ENVIRONMENTAL CONTAMINANTS REVIEWS Pub Date : 2020-11-30 DOI: 10.26480/ecr.02.2021.49.53

Yousaf Hassan, Shahbaz Nasir Khan, Hafiz Muhammad Safdar Khan, R. A. Aslam, Touseef Ahmed Babar, A. Nasir

{"title":"EVALUATION OF TREATMENT OF DOMESTIC WASTEWATER USING EICCHORNIA CRASSIPES AND PISTA STRATIOTES BY PHYTOTECHNOLOGIES","authors":"Yousaf Hassan, Shahbaz Nasir Khan, Hafiz Muhammad Safdar Khan, R. A. Aslam, Touseef Ahmed Babar, A. Nasir","doi":"10.26480/ecr.02.2021.49.53","DOIUrl":"https://doi.org/10.26480/ecr.02.2021.49.53","url":null,"abstract":"Water shortage is now one of the major issues of the global world. Water scarcity is increasing day by day. The availability of water is decreasing. The need of hour is to treat the wastewater for dealing water crisis and using it for various purposes. This study involves the treatment of domestic wastewater using phytoremediation technique. The two aquatic plants named Eichhornia crassipes (Water hyacinth) and Pistia stratiotes (Water lettuce) were used. The parameters investigated in this research were pH, TDS, Turbidity, EC, TSS and temperature. These parameters were checked at various retention times after every three days interval. The objective of this study was to get higher efficiencies of these two aquatic plants in improving the parameters involved in the research. The adequacy of the treatment parameters was also validated using statistical analysis. It was established by the results at the end of the experiment that maximum efficiencies were achieved by this phytoremediation technique. This concluded that these two aquatic plants treated the wastewater to such an extent that it can be safely disposed in the drains.","PeriodicalId":11882,"journal":{"name":"ENVIRONMENTAL CONTAMINANTS REVIEWS","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85262478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

TOLERANCE MECHANISM AGAINST IMPACT OF HEAT STRESS ON WHEAT : A REVIEW 小麦对热胁迫的耐受机制研究进展

ENVIRONMENTAL CONTAMINANTS REVIEWS Pub Date : 2020-11-30 DOI: 10.26480/ecr.02.2021.43.48

Neha Sah, D. Sherpa

{"title":"TOLERANCE MECHANISM AGAINST IMPACT OF HEAT STRESS ON WHEAT : A REVIEW","authors":"Neha Sah, D. Sherpa","doi":"10.26480/ecr.02.2021.43.48","DOIUrl":"https://doi.org/10.26480/ecr.02.2021.43.48","url":null,"abstract":"Wheat (Triticum aestivum) of the family Poaceae is an important cereal crop and is regarded as a basic source of calories and protein demands of the increasing population. With regards to change in global temperature, the impact of rising temperature on crop production is gaining concern worldwide. Among the various abiotic stresses observed in wheat, heat and drought are the major abiotic stresses. An increase in temperature results in the reduction of grain number, photosynthetic activity, chlorophyll content, and starch synthesis in the endosperm interrupting the important morphological, physiological, and biochemical processes of the plant causing considerable variation like reduction in grain weight per ear, single kernel weight, kernel number, grain size. Spikelet formation, seed size, etc. along with decreased plant size under morphological changes. Similarly, under physiological changes, water potential, photosynthesis, respiration, etc. are adversely affected due to heat stress in wheat. Content of starch, protein, and different types of amino acid present in wheat grain is also affected due to heat stress which comes under biochemical changes. Heat shock proteins (HSPs) and stay green are the mechanisms for the heat tolerance in wheat. The present review was carried out to summarize the various effects of heat stress on wheat at morpho-anatomical, physiological, and biochemical behavior with a brief discussion on suitable breeding strategies to improve the production of wheat crops.","PeriodicalId":11882,"journal":{"name":"ENVIRONMENTAL CONTAMINANTS REVIEWS","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85046916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1