Abstract：
:The water quality index (WQI) is an important tool for water resource management and planning. However, it has major disadvantages: the generation of chemical waste, is costly, and time-consuming. In order to overcome these drawbacks, we propose to simplify this index determination by replacing traditional analytical methods with ultraviolet-visible (UV-Vis) spectrophotometry associated with artificial neural network (ANN). A total of 100 water samples were collected from two rivers located in Assis, SP, Brazil and calculated the WQI by the conventional method. UV-Vis spectral analyses between 190 and 800 nm were also performed for each sample followed by principal component analysis (PCA) aiming to reduce the number of variables. The scores of the principal components were used as input to calibrate a three-layer feed-forward neural network. Output layer was defined by the WQI values. The modeling efforts showed that the optimal ANN architecture was 19-16-1, trainlm as training function, root-mean-square error (RMSE) 0.5813, determination coefficient between observed and predicted values (R2) of 0.9857 (p < 0.0001), and mean absolute percentage error (MAPE) of 0.57% ± 0.51%. The implications of this work's results open up the possibility to use a portable UV-Vis spectrophotometer connected to a computer to predict the WQI in places where there is no required infrastructure to determine the WQI by the conventional method as well as to monitor water body's in real time.
journal_name
Environ Monit Assessjournal_title
Environmental monitoring and assessmentauthors
Alves EM,Rodrigues RJ,Dos Santos Corrêa C,Fidemann T,Rocha JC,Buzzo JLL,de Oliva Neto P,Núñez EGFdoi
10.1007/s10661-018-6702-7subject
Has Abstractpub_date
2018-05-02 00:00:00pages
319issue
6eissn
0167-6369issn
1573-2959pii
10.1007/s10661-018-6702-7journal_volume
190pub_type
杂志文章abstract：:By the method of P fractionation, we examined sedimentary P fractions in Lake Dianchi before and during cyanobacterial blooms, namely in April 2004 and August 2004, respectively. In this study, the whole lake is divided into four areas to discuss P fractions in sediment and the relationship between them and water qual...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-006-9509-x
更新日期：2007-09-01 00:00:00
abstract：:In order to acquire the spatial distribution, speciation, and risk assessment of arsenic (As), 18 sediment samples were collected in the middle and upper reaches (Nanpan River, Beipan River, Hongshui River, Diaojiang River, and Duliu River) of the Xijiang River basin, China. The chemical fractions of As in the collect...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-019-7883-4
更新日期：2019-10-24 00:00:00
abstract：:Industrial complexes may release dust emissions through several to up to tens of stacks, as well as via fugitive area sources. Several diffusion models for small-scale fugitive dust sources have been developed and combined with a point source model to form a series of models for industrial complexes. The applicable ar...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/BF00418008
更新日期：1992-08-01 00:00:00
abstract：:The city of Litvínov (North Bohemia, Czech Republic) is seriously affected by coal mining, coal processing, and intensive industrial activities. Within the urban area, the potential environmental hazard of risk elements (in soil and vegetation) and polycyclic aromatic hydrocarbons (PAHs, in soils) was estimated using ...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-020-08825-x
更新日期：2021-01-18 00:00:00
abstract：:Glyphosate (GLYP), the globally most important herbicide, may have effects in various compartments of the environment such as soil and water. Although laboratory studies showed fast microbial degradation and a low leaching potential, it is often detected in various environmental compartments, but pathways are unknown....
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-019-8045-4
更新日期：2020-01-21 00:00:00
abstract：:The production of apples in Poland is the largest among the countries of the European Union, and therefore, the consumption of these fruits is high in our country. The aim of this study was to determine the presence of pesticide residues in Polish apples and to assess if these residues pose a risk to the health of the...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-013-3219-y
更新日期：2013-11-01 00:00:00
abstract：:The concentrations of Cr, Ni, Cu, Zn, Cd, and Pb in superficial sediment samples collected from three representative sites (Yuqiao Reservoir, Haihe River, and Haihe River Estuary) in Tianjin, North China, were analyzed using various single extraction and sequential extraction procedures to determine their remobilizati...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-010-1434-3
更新日期：2011-02-01 00:00:00
abstract：:This article analyses elemental composition of suspended particulate matter (SPM) samples collected monthly from 1999 to 2005 at two locations in Yokohama, Japan. Microwave digestion and inductively coupled plasma mass spectroscopy was employed to measure Mg, Al, Ca, V, Cr, Mn, Ni, Cu, Zn, Ga, As, Se, Rb, Sr, Ag, Cd, ...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-009-1290-1
更新日期：2010-12-01 00:00:00
abstract：:Polybrominated diphenyl ethers (PBDEs) used extensively over the past 3 decades as flame retardants in most types of polymers, all over the world, have been identified as global pollutants. PBDEs pose various health problems such as thyroid hormone disruption, permanent learning and memory impairment, behavioral chang...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-013-3596-2
更新日期：2014-05-01 00:00:00
abstract：:Metal fractionation provides information on mobility and stability of various metal species which can be used to evaluate the movement of such metals in soils. The effect of wastewater irrigation on the fractions, spatial distribution, and mobility of cadmium (Cd) and zinc (Zn) was investigated in five urban gardens i...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-011-2099-2
更新日期：2012-04-01 00:00:00
abstract：:Acetamiprid insecticide has been widely used to control paddy insects. In order to find out the dissipation of acetamiprid residues in paddy (variety: Satabdi), field studies were conducted in Nadia, West Bengal. Acetamiprid (20% SP) was applied twice at 10 g (T1), 20 g (T2) and 40 g (T3) a.i. ha-1 with three replicat...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-017-5871-0
更新日期：2017-04-01 00:00:00
abstract：:We have implemented a diagnostic system designed to advise on the likely causes of sanitary problems with public water sources. The approach to the problem makes extensive use of rule based expert systems and multi media information (maps, data, text, expert knowledge). The rules were based on actual water survey data...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/BF00406952
更新日期：1992-12-01 00:00:00
abstract：:Corpus Christi Bay (TX, USA) is a shallow wind-driven bay and thereby, can be characterized as a highly pulsed system. It cycles through various episodic events such as hypoxia, water column stratification, sediment resuspension, flooding, etc. Understanding of the processes that control these events requires an effic...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-010-1536-y
更新日期：2011-04-01 00:00:00
abstract：:The quality assessment of coastal waters of a tourist resort, on the basis of water quality criteria was attempted by using different quantitative approaches. Five variables related to eutrophication, that is nitrate, nitrite, ammonia, phosphate and chlα were analyzed. Graphical methods were applied to all variables a...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/BF00394360
更新日期：1990-01-01 00:00:00
abstract：:The activity concentrations of 226Ra, 232Th, and 40K in lime and gypsum samples used as building materials in Turkey were measured using gamma spectrometry. The mean activity concentrations of 226Ra, 232Th, and 40K were found to be 38±16, 20±9, and 156±54 Bq kg(-1) for lime and found to be 17±6, 13±5, and 429±24 Bq kg...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-009-1246-5
更新日期：2010-11-01 00:00:00
abstract：:Costal sediment samples from Great Kwa River as well as adjoining termite nest and soil samples were analyzed for quantitative determination of polycyclic aromatic hydrocarbons (PAHs) and sterols using gas chromatography-mass spectrometry (GC-MS) in order to access the possibility of transport of biologically produced...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-012-2641-x
更新日期：2013-02-01 00:00:00
abstract：:Dissolved oxygen was continuously monitored in eight sites of northern Gulf of Mexico estuaries in August, 1990. Monte Carlo analyses on subsamples of the data were used to evaluate several commonly used monitoring strategies. Monitoring strategies which involve single point sampling of dissolved oxygen may often misc...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/BF00545979
更新日期：1993-02-01 00:00:00
abstract：:The purpose of this paper is to understand the sources of potentially toxic elements (PTE) and provide some suggestions to control PTE pollution. For this purpose, data from 30 monitoring stations for 2009-2018 were used to assess the PTE concentrations of Hg, Cu, Pb, Cd, Zn, and As in the Yangtze River Estuary. The P...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-020-08795-0
更新日期：2021-01-07 00:00:00
abstract：:Noise mapping has been used as an instrument for assessment of environmental noise, helping to support decision making on urban planning. In Brazil, urban noise is not yet recognized as a major environmental problem by the government. Besides, cities that have databases to drive acoustic simulations, making use of adv...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-010-1337-3
更新日期：2011-01-01 00:00:00
abstract：:An investigation was conducted on the macro-benthic fauna of the Napoleon Gulf in the northern part of Lake Victoria from March 2011 to December 2016 at the cage fish farm. The aim was to examine the likely impact of cage aquaculture on macro-benthic invertebrates. Cage aquaculture is now a common practice on Lake Vic...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-018-6498-5
更新日期：2018-02-02 00:00:00
abstract：:This study focuses on mercury (Hg) bioaccumulation in Indian cat fish, Wallagoo attu and Mystus aor, from different rivers. Methyl mercury (MeHg) concentrations were determined in muscle tissue of two different parts, ventral and dorsal part, of each species and the levels of organic mercury were co-related with lipid...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-012-2530-3
更新日期：2013-01-01 00:00:00
abstract：:The water level fluctuation zone (WLFZ) in the Three Gorges Reservoir is located in the intersection of terrestrial and aquatic ecosystems, and assessing heavy metal pollution in the drown zone is critical for ecological remediation and water conservation. In this study, soils were collected in June and September 2009...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-012-2547-7
更新日期：2013-01-01 00:00:00
abstract：:India, a mega-diverse country, possesses a wide range of climate and vegetation types along with a varied topography. The present study has classified forest types of India based on multi-season IRS Resourcesat-2 Advanced Wide Field Sensor (AWiFS) data. The study has characterized 29 land use/land cover classes includ...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-015-4990-8
更新日期：2015-12-01 00:00:00
abstract：:The Bear Brook Watershed in Maine (BBWM), USA, and the Fernow Experimental Forest in West Virginia, USA, represent unique, long-term, paired, whole watershed, experimental manipulations focusing on the effects of nitrogen (N) and sulfur (S) deposition on temperate forests. Both watersheds began whole-ecosystem additio...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-010-1524-2
更新日期：2010-12-01 00:00:00
abstract：:Physicochemical characteristics of dissolved components from environmental samples have been studied in order to understand the impact of atmospheric pollution from aerosols and rain on surface and sub-surface waters, at industrialised urban areas in and around Mangalore, southwest coast of India. Comparatively, the H...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-006-9565-2
更新日期：2007-10-01 00:00:00
abstract：:The article presents a review of environmental degradation and its threats in China. Air pollution, water pollution, deforestation, soil degradation, sand depositing in dams, decaying urban infrastructure, and more and more hazards such as floods, landslides and soil erosion are major consequences of environmental deg...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1023/b:emas.0000003576.36834.c9
更新日期：2004-01-01 00:00:00
abstract：:The inorganic nitrogen transformations occurring at a municipal waste leachate treatment facility were investigated. The treatment facility consisted of a collection well and an artificial wetland between two aeration ponds. The first aeration pond showed a decrease in ammonium (from 3480 (+/- 120) to 630(+/- 90) mg x...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-006-9208-7
更新日期：2007-01-01 00:00:00
abstract：:Mining plays an important role in Brazilian exports. On the other hand, large urban centers like São Paulo, with approximately 21 million inhabitants, also demand an increasing domestic consumption of natural resources, such as construction aggregate. There are many quarries located in the surroundings of urban center...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-017-6404-6
更新日期：2017-12-22 00:00:00
abstract：:A new algorithm was developed for retrieving sea surface temperature (SST) in coastal waters using satellite remote sensing data from Moderate Resolution Imaging Spectroradiometer (MODIS) aboard Aqua platform. The new SST algorithm was trained using the Artificial Neural Network (ANN) method and tested using 8 years o...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-017-6010-7
更新日期：2017-06-01 00:00:00
abstract：:The public health consequences of extreme heat events are felt most intensely in metropolitan areas where population density is high and the presence of the urban heat island phenomenon exacerbates the potential for prolonged exposure. This research develops an approach to map potential heat stress on humans by combin...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-011-2502-z
更新日期：2012-12-01 00:00:00
