scholarly journals Environmental Soil, Water, and Sediment Quality of Dong Thang Landfill in Can Tho City, Vietnam

2019 ◽  
pp. 73-83
Author(s):  
Huynh T.H. Nhien ◽  
Giao T. Nguyen
Keyword(s):  
Heavy Metals ◽  
Surface Water ◽  
Bottom Sediment ◽  
Sediment Quality ◽  
Oxygen Demand ◽  
Principal Component ◽  
National Standard ◽  
Rice Field Soil ◽  
Sediment Data ◽  
Can Tho City

This study is a preliminary assessment of water, soil, and bottom sediment quality at and around Dong Thang landfill in Co Do district, Can Tho city, Vietnam. Four canal water samples, one leachate sample, and three soil samples from the surrounding rice fields, two bottom sediment samples from the canals, and one bottom sediment sample from the leachate pond were examined for this purpose. The results revealed that the leachate sample contained six heavy metals (Mn, Fe, Cu, Zn, Cr, and Ni) with high electrical conductivity (EC), biochemical oxygen demand (BOD), chemical oxygen demand (COD), total suspended solids (TSS), ammonia (NH4+-N), nitrate (NO3--N), and phosphate (PO43--P) (9922.7 μS cm-1, 832.00 mg L-1, 3,729.08 mg L-1, 743.75 mg L-1, 366.27 mg L-1, 6.03 mg L-1, and 0.22 mg L-1, respectively). Further, seven heavy metals (Zn, Cu, Mn, Cr, Ni, Pb, and Fe) were detected in the sediment of the leachate collection pond. COD, TSS, NH4+-N, Mn, and Fe concentrationsfor surface water exceeded the permissible level prescribed by the Vietnam national standard for surface water (QCVN 08-MT:2015/BTNMT). All heavy metals found in the leachate sediments were also detected in canal sediments and rice-field soil, thereby leading to the conclusion that pollutants disperse into the surrounding environment. Further, principal component analysis revealed that 91.3% of the variations in soil and sediment data could be explained by two primary components, PC1 and PC2. These components represent two sources of pollution, agricultural production and landfill activities, besides other pollution sources. The findings of this preliminary study show that water, soil, and bottom sediment in the area surrounding the landfill are contaminated with organic matter, nutrients, and heavy metals. Therefore, monitoring of the environment in the study area should be conducted to detect any pollutants, and alert local authorities and environmental managers.

scholarly journals Multivariate analysis of sediment quality in River Ogbere, Ibadan, South-West Nigeria

2021 ◽  
Author(s):  
C. G. Achi ◽  
A. M. Omoniyi ◽  
A. O. Coker ◽  
M. K. C. Sridhar
Keyword(s):  
Heavy Metals ◽  
River Sediments ◽  
Sediment Quality ◽  
Principal Component ◽  
Sampling Location ◽  
Distribution Profile ◽  
Data Set ◽  
Anthropogenic Inputs ◽  
Petroleum Resources ◽  
Heavy Metal Assessment

Abstract Heavy metals are pollutants of river sediments, and their concentration varies depending on parental material and anthropogenic inputs, thus important to distinguish between the natural and anthropogenic inputs. The objective of this study is to use different types of indexes to assess the current pollution status in Ogbere River sediment and select the best index to describe the sediment quality. The indexes used in this study were enrichment factor (EF), geoaccumulation index (Igeo) and principal component analysis (PCA). The PCA has an advantage over other index analyses as it reduces the dimensionality of the data set and thus used to support multivariate cluster analysis. From the study, a total of 12 sediment samples were collected in both seasons across six sampling location and pollution indexes indicated three things: firstly, the metal distribution profile in the sediment showed that the heavy metals analysed for were lower than the maximum allowable limits stipulated by Department of Petroleum Resources (DPR); secondly, minor to extremely severe significant levels of enrichment and thirdly, practically uncontaminated to a moderately contaminated degree of contamination in Ogbere River during the study period. The PCA is considered more sensitive in the analysis of benthic changes and as well as sediment quality. However, the heavy metal assessment indices are not only used for sediment quality. Biological testing and ecological analysis of existing community related to sediment contamination are further recommended in River Ogbere.

scholarly journals An Assessment of Water and Sediment Quality of River in India with Special Reference to Pesticide Contamination, a Case Study

2018 ◽  
Vol 7 (3.8) ◽  
pp. 97
Author(s):  
Divya A.H ◽  
P A. Soloman
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Bottom Sediment ◽  
Sediment Quality ◽  
Temporal Distribution ◽  
Water Quality Monitoring ◽  
Human Beings ◽  
Water And Sediment Quality

Drinking water quality has become a serious issue in many countries due to the scarcity of fresh water resources. Water quality monitoring is the first step for the management and conservation of aquatic system. The contamination of OrganoChlorine Pesticides (OCPs) is very harmful for the environment and human beings. The presence of OCPs in surface water and in the bottom sediment in the Chalakudy River was investigated to evaluate the pollution load and distribution level of OCP seasonally over a period of 3 years from January 2013 to December 2015. Surface water sample and bottom sediment were collected from nine different sites (upstream, midstream and downstream) and analyzed for their profile of important physicochemical parameters and for persistence of OCP. To know the present trends in the river clearly ,temporal  distribution  and spatial distribution of OCPs and other parameters are studied based on three season(winter, summer, and monsoon).Obtained trend in each  year  were compared  through sampling and analysis.   

scholarly journals EVALUATING SURFACE WATER QUALITY AND WATER MONITORING PARAMETERS IN THE TIEN RIVER, VIETNAMESE MEKONG DELTA

2021 ◽  
Vol 83 (3) ◽  
pp. 29-36
Author(s):  
Thanh Giao Nguyen ◽  
Vo Quang Minh
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Monitoring Program ◽  
Oxygen Demand ◽  
Surface Water Quality ◽  
Principal Component ◽  
Water Quality Monitoring ◽  
Quality Parameters ◽  
Water Monitoring ◽  
Water Quality Parameters

The study aimed to evaluate the surface water quality of the Tien River and identify water quality parameters to be monitored using the water quality monitoring data in the period of 2011 - 2019. The water samples were collected at five locations from Tan Chau to Cho Moi districts, An Giang province for three times per year (i.e., in March, June, and September). Water quality parameters included temperature (oC), pH, dissolved oxygen (DO), total suspended solids (TSS), nitrate (NO3--N), orthophosphate (PO43--P), biological oxygen demand (BOD), and coliforms. These parameter results were compared with the national technical regulation on surface water quality QCVN 08-MT: 2015/BTNMT, column A1. Principal component analysis (PCA) was used to identify the sources of pollution and the main factors affecting water quality. The results of this study showed that DO concentration was lower and TSS, BOD, PO43--P, coliforms concentrations in the Tien river exceeded QCVN 08-MT: 2015/BTNMT, column A1. pH, temperature, and NO3--N values were in accordance with the permitted regulation. The water monitoring parameters were seasonally fluctuated. DO, BOD, TSS, and coliforms concentrations were higher in the rainy season whereas NO3--N and PO43--P were higher in the dry season. The PCA results illustrated that pH, TSS, DO, BOD, PO43--P and coliforms should be included in the monitoring program. Other indicators such as temperature and NO3--N could be considered excluded from the program to save costs. 

scholarly journals Spatial Distribution Characteristics and Risk Assessment of Nutrient Elements and Heavy Metals in the Ganjiang River Basin

Water ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 3367
Author(s):  
Xiaodong Chu ◽  
Daishe Wu ◽  
Hao Wang ◽  
Fangwen Zheng ◽  
Cheng Huang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
River Basin ◽  
Oxygen Demand ◽  
Principal Component ◽  
Environmental Water ◽  
Risk Assessments ◽  
Nutrient Elements ◽  
Industrial Activities ◽  
Adults And Children ◽  
Ganjiang River Basin

The pollution of water bodies by nutrients and heavy metals can lead to a loss of biodiversity, environmental degradation, and harm to human health. During the two-month monitoring period (e.g., December 2019 to January 2020), variables such as trace metals (e.g., Cu, Zn, As, and Cr), nutrients (e.g., NH4+-N, TN, and TP), water temperature, pH value, dissolved oxygen (DO), chemical oxygen demand (COD) and five-day biochemical oxygen demand (BOD5) were measured at 102 monitoring points in the main stream and tributaries of the Ganjiang River in the Poyang Lake Basin. A variety of multivariate statistical techniques, including cluster analysis (CA), principal component analysis (PCA), and correlation analysis, were used to conduct risk assessments and source analyses of the nutrient elements and heavy metals in the Ganjiang River system. The results show that although the Ganjiang River Basin is polluted by human activities, its water chemistry characteristics and trace metal and nutrient elements concentrations were better than the national standards. Through principal component analysis, the water pollution sources could be divided into urban sewage, agricultural activities, industrial activities, and the sources of industrial activities and transportation activities. The comprehensive risks of noncarcinogens (Hc) and comprehensive risks of carcinogens (Rc) for adults and children due to drinking water indicated that the risk from drinking water for the children in the basin was greater than that for adults, and that the Hc for adults and children was acceptable. However, the Rc for adults and children was slightly higher than the acceptable values. This study provides a reference for the fine control of the environmental water pollution sources in the Ganjiang river basin and health risk assessments in the basin, which are of great significance for improving the environmental water quality standards in the river basin and for reducing the risk of carcinogenesis.

scholarly journals Heavy metals risk assessment of water and sediments collected from selected river tributaries of the Mara River in Tanzania

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Mihayo Sahani Nkinda ◽  
Mwemezi Johaiven Rwiza ◽  
Jasper Nathan Ijumba ◽  
Karoli Nicholas Njau
Keyword(s):  
Surface Water ◽  
Sediment Quality ◽  
Principal Component ◽  
Environmental Risks ◽  
Control Mechanisms ◽  
Dry Period ◽  
Strong Negative Correlation ◽  
Pollution Risk ◽  
Quality Guidelines ◽  
Significant Enrichment

AbstractThis study investigated the levels of Pb, Hg, Cr, Cd, and As in water and sediments from the tributaries of the Mara River, Tanzania. Pollution risk of water and sediments was investigated using seven indices and five metals. During the dry period, the highest concentration of Pb, Hg, Cr, Cd, and As in sediments was 17.45 ± 1.22, 0.01, 1.56 ± 0.5, 1.3 ± 0.09, and 30.81 ± 0.02 mg/kg, respectively. During the wet period, the highest concentration of Pb, Hg, Cr, Cd, and As in sediments was 4.37 ± 0.28, 0.012, 2.58 ± 0.57, 2.25 ± 0.35, and 53 ± 0.02 mg/kg, respectively. For surface water, the respective highest concentrations of Pb, Hg, Cr, Cd, and As were 0.76 ± 0.09, 0.04, 0.68 ± 0.09, 0.74 ± 0.1, and 0.47 ± 0.06 mg/L for the dry period. The wet period max concentrations for Pb, Hg, Cr, Cd, and As in surface water were 0.56, 0.03, 0.55 ± 0.03, 0.48 ± 0.03, and 0.4 ± 0.03 mg/L, respectively. Principal component analysis results indicated dominant loadings for Pb and As in sediments during the dry period. Comparison of sediment concentrations with sediment quality guidelines revealed that As and Cd were enriched. Correlation coefficient results indicated that As had a strong negative correlation with the rest of the elements in sediments during the dry period. In the wet period, As had a significant correlation with Cd (r = 0.92, p < 0.01) in sediments. The analysis of environmental risks indicated significant enrichment of sediments with As and Cd. It is important to put in place relevant control mechanisms targeting metals in the studied tributaries, with a focus on As and Cd.

scholarly journals ANALISIS KANDUNGAN MERKURI (Hg) PADA PADA EKOSISTEM SUNGAI WAELATA DAN SUNGAI ANAHONI YANG TERDAMPAK AKTIFITAS PERTAMBANGAN EMAS DI PULAU BURU, MALUKU

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Irsan . ◽  
Yusthinus T. Male ◽  
Debby A. J. Selanno
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Sea Water ◽  
Sediment Quality ◽  
Quality Standard ◽  
National Standard ◽  
Marine Biota ◽  
Maximum Limit

Sungai Waelata dan Sungai Anahoni merupakan dua sungai tempat beroperasinya trommel untuk pengolahan material emas Gunung Botak dan Gogrea. Melalui aliran sungai, limbah merkuri hasil pengolahan trommel terangkut dan terbawa ke muara yang pada akhirnya akan mencemari perairan laut Teluk Kayeli. Kerang Polymesoda erosa merupakan salah satu jenis kerang yang sering digunakan dalam pemantauan logam berat merkuri, terutama pada wilayah muara sungai. Penelitian ini bertujuan untuk menganalisis kadar logam berat merkuri(Hg) pada air, sedimen dan kerang Polymesoda erosadi Muara Sungai Waelata dan Sungai Anahoni Kabupaten Buru. Hasil penelitian menunjukan konsentrasilogamberat merkuripada air di Muara Sungai Waelata dan Sungai Anahoni tidak terdeteksi di semua stasiun penelitian dan dibawah baku mutu air laut untuk biota laut berdasarkan Kepmen LH No. 51 Tahun 2004 sebesar 0,001 ppm. Konsentrasilogamberat merkuripada sedimenmemilikikisaranrata­ratasebesar0,134­0,874ppm dan dibawah baku mutu sedimen berdasarkan ANZECC/AMRCANZ (2000) sebesar 1,0 ppm. Konsentrasilogamberat merkuripada kerang Polymesoda erosamemilikikisaranrata­ratasebesar0,123­0,206 ppm dan dibawah Batasan Maksimum Cemaran Logam Berat Dalam Pangan merujuk pada Standar Nasional Indonesia (SNI) No. 7387 Tahun 2009 sebesar 1,0 ppmABSTRACT The Waelata River and the Anahoni River are the two rivers where trommel operates for the processing of gold material from Gunung Botak and Gogrea. By the river, mercury waste from the processing of trommel is transported through estuary which will ultimately pollute the waters of the Kayeli Bay. Polymesoda erosa shells are one type of shellfish that is often used in monitoring heavy metals of mercury, especially in the estuary region. This study aims to analyze the concentration of heavy metal mercury (Hg) in water, sediments and Polymesoda erosa shells in the Waelata River and Anahoni River in Buru Regency. The results showed that the concentration of mercury heavy metals in water in the Waelata River and Anahoni River were not detected at all research stations and were below sea water quality standard for marine biota based on Minister of Environment Decree No. 51 of 2004 which is 0.001 ppm. The concentration of mercury heavy metals in sediments has an average range of 0.1340.887 ppm and is below the sediment quality standard based on ANZECC/AMRCANZ (2000) of 1.0 ppm. The concentration of mercury heavy metals in Polymesoda erosa shells has an average range of 0.1230.206 mg/kg and under the Maximum Limit of Heavy Metal Contamination in Food refers to the Indonesian National Standard (SNI) No. 7387 of 2009 which is 1.0 ppm.

scholarly journals ASSESSING SURFACE WATER QUALITY IN FRESHWATER RESERVOIRS IN AN GIANG PROVINCE, VIET NAM

2021 ◽  
Vol 1 (42) ◽  
pp. 78-85
Author(s):  
Giao Thanh Nguyen
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Suspended Solids ◽  
Oxygen Demand ◽  
Surface Water Quality ◽  
Principal Component ◽  
Quality Criteria ◽  
Water Quality Criteria ◽  
Pca Analysis ◽  
Group Water

Water quality is critical for a healthy ecosystem, this study was conducted to evaluate the surface water quality in lakes in An Giang Province from 2017 to 2019. Water quality was assessed using variables of temperature, pH, dissolved oxygen (DO), total suspended solids (TSS), chemical oxygen demand (COD), biological oxygen demand (BOD), nitrate (NO3- - N), phosphate (PO3 4- - P ), ammonia (NH+ 4 - N), and coliforms at nine locationsbelonging to seven reservoirs including O Tuk Sa, Thuy Liem, Soai So, Soai Chek, O Thum, O Ta Soc, and Bung Binh Thien. Water quality criteria were assessed according to the National Technical Regulation on Surface Water Quality (QCVN 08-MT: 2015/BTNMT). Cluster analysis (CA) and principal component analysis (PCA)were applied to group water quality to identify the main parameters affecting water quality in the reservoirs. The findings indicated that the water quality in the reservoirs were polluted by TSS, organic matters (DO was low, while COD and BOD were high), and microorganisms (coliforms). The PCA analysis showed that the watervariables including temperature, pH, DO, TSS, COD, BOD, NO3- - N, PO3 4- - P , NO3- - N, and coliforms significantly influenced the surface of the water in the reservoirs. It is necessary to investigate pollution sources to propose appropriate solutions to treat and maintain the water quality in the reservoirs of An Giang Province .

scholarly journals Spatial Distribution Characteristics and Sources of Nutrients and Heavy Metals in the Xiujiang River of Poyang Lake Basin in the Dry Season

Water ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 1654
Author(s):  
Xiaodong Chu ◽  
Hao Wang ◽  
Fangwen Zheng ◽  
Cheng Huang ◽  
Chunxia Xu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Surface Water ◽  
Rural Areas ◽  
Human Activities ◽  
Poyang Lake ◽  
Oxygen Demand ◽  
Lake Basin ◽  
Mountainous Area ◽  
Class Iii ◽  
Poyang Lake Basin

In December of 2019, a total of 114 river water samples were collected from 38 sampling sites in the Xiujiang River of the Poyang Lake Basin for three consecutive days. The temperature (T), pH, dissolved oxygen (DO), chemical oxygen demand (CODCr), five-day biochemical oxygen demand (BOD5), total nitrogen (TN), ammonia nitrogen (NH4+-N), total phosphorus (TP), and concentrations of heavy metals (Cr, Cu, Zn and As) of the samples were measured. The results showed that the average concentrations of heavy metals in the mainstream of the Xiujiang River were Cu > Zn > Cr > As, and those in the main tributary of Xiujiang River (named as the Liaohe tributary) were Zn > Cu > Cr > As, which met the class III of the Environmental Quality Standards for Surface Water in China. However, it was founded that TN and NH4+-N in some agricultural areas had not met the class III standard of surface water. Hierarchical clustering analysis grouped sampling sites into four clusters. Clusters 1, cluster 2, cluster 3, and cluster 4 corresponded to an urban industrial area, rural mountainous area, primitive mountainous area, and agricultural area, respectively. The majority of the sampling sites were classified as mountainous rural areas less impacted by human activities, while the Liaohe tributary were urban industrial areas impacted more by human activities. Principal component analysis and correlation analysis results showed that variation of heavy metals and nutrient elements in Xiujiang River is related to the heterogeneity of human activities, which is mainly affected by urban industrial and agricultural pollution, and natural environments of the river with different background values. The results obtained in the current study will potentially provide a scientific basis for the protection and management of freshwater resources and aquatic ecosystems in the Xiujiang River and Poyang Lake Basin.

Harmonisation of micropollutant monitoring in large international river: Danube

1995 ◽  
Vol 32 (5-6) ◽  
pp. 125-137 ◽  
Author(s):  
P. Literathy ◽  
F. Laszlo
Keyword(s):  
Heavy Metals ◽  
Bottom Sediment ◽  
Solid Phase ◽  
Sediment Quality ◽  
Fine Fraction ◽  
Data Interpretation ◽  
Danube River ◽  
Quality Guidelines ◽  
Water And Sediment Quality ◽  
International River

Micropollutants (heavy metals, organic compounds) play an important role in the quality characterisation of surface waters. These pollutants are usually bioresistant, persistent compounds or may undergo biotransformation, photo-oxidation, sometimes resulting in more toxic breakdown products than their parents, or can accelerate dispersion of hydrophobic compounds and mobilisation of heavy metals from the solid phase. Because of multiple introduction of these pollutants along a large, international river, and due to the sedimentation and re-suspension of the particulate matter by the river hydrodynamics, the deposition of the polluting compounds into the bottom sediment may occur far downstream of the discharge. Appropriate micropollutant sampling and monitoring in both the water column and bottom sediment are discussed. It is concluded that the higher the fine fraction in the sample, the more representative the sediment-bound pollutant characterisation. In order to achieve water and sediment quality guidelines and objectives for micropollutants the guidelines and monitoring programmes must be harmonised, including the sampling, sample preparation, analytical and data interpretation methods among the riparian countries along the Danube river.

scholarly journals Distribution and Risk Assessment of Toxic Pollutants in Surface Water of the Lower Yellow River, China

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1582
Author(s):  
Zhi-Hua Li ◽  
Ze-Peng Li ◽  
Xue Tang ◽  
Wen-Hao Hou ◽  
Ping Li
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Risk Assessment ◽  
Surface Water ◽  
Water Samples ◽  
Yellow River ◽  
Oxygen Demand ◽  
Quality Parameters ◽  
Lower Yellow River ◽  
The Lower Yellow River

The lower reaches of the Yellow River is known for the rapid development of industry and agriculture, which has also led to some pollution. However, information about the level of toxic contaminants in the surface waters is lacking in this area. Therefore, five sampling points were set in the lower Yellow River to investigate the distribution of various pollutants and analyze the potential risks. The presence of heavy metals (Heavy metals tested for in this study were: Mercury (Hg), Arsenic (As), Copper (Cu), Chromium (Cr), and Zinc (Zn)) and antibiotics (Antibiotics tested for in this study were: Enrofloxacin (ENR), Ciprofloxacin (CIP), and Norfloxacin (NOR)) in water samples taken from the lower Yellow River were measured to reveal the spatial distribution and risk potential of the compounds. Various water quality parameters (Water quality parameters used in this study were: chemical oxygen demand (COD), biological oxygen demand (BOD5), total phosphorus (TP), and total nitrogen (TN)) were also tested. Study results showed the main surface water pollution components were COD, BOD5, TN, and TP. The average levels were 37.79 mg/L, 16.64 mg/L, 4.14 mg/L, and 0.42 mg/L, respectively. Among the detected metals from the water samples, Hg (LOD-0.1 μg/L) levels were only in line with the surface water class III or worse. Both fish and water samples contained antibiotics. According to an ecological risk assessment conducted along the river, the distribution of pollutants in the waters exhibited a spatial relationship with the land-use pattern in the study region and the Kenli site was the most polluted. Research shows that up-to-date data on the residual levels and distribution characteristics of pollutants in the lower Yellow River could provide valuable baseline data and technical support for relevant government departments and their management going forward.

Sign in / Sign up

Export Citation Format

Share Document