scholarly journals UTILIZAÇÃO DO MAPEAMENTO HIDROQUÍMICO PARA AVALIAÇÃO DA QUALIDADE DAS ÁGUAS SUPERFICIAIS DA BACIA DO RIO SÃO MIGUEL, MINAS GERAIS

2018 ◽  
Author(s):  
Thiago Nogueira Lucon ◽  
Adivane Terezinha Costa ◽  
Bruna de Oliveira Meyer ◽  
Pedro Henrique Silva Assunção ◽  
Leon Dias Oliveira
Keyword(s):  
San Francisco ◽  
Surface Waters ◽  
Physicochemical Parameters ◽  
Quality Evaluation ◽  
Minas Gerais ◽  
Karst Region ◽  
Major Cations ◽  
Aluminum Iron

Resumo:A área em estudo contempla a bacia do rio São Miguel (≈520 km2), afluente do rio São Francisco, situada na província cárstica de Arcos-Pains e inserida na Bacia Hidrográfica do Alto São Francisco (235.635 km2). Com o objetivo de avaliar preliminarmente a utilização do mapeamento hidroquímico para verificar espacialmente a qualidade das águas superficiais, foram realizadas análises hidroquímicas em 34 pontos da bacia em apreço durante uma estação seca e uma chuvosa. As análises incluíram a determinação de parâmetros físico-químicos (temperatura, pH, Eh, CE, STD, oxigênio dissolvido e turbidez), assim como a concentração de ânions (NO3-, PO43-, HCO3-, SO42- e Cl-), cátions maiores e elementos traço. Os dados foram tratados e comparados com os valores estabelecidos pela legislação Conama nº 357 (2005) para aguas da classe 1 os quais balizaram os valores plotados nos mapas hidroquímicos, facilitando, desta maneira, a visualização dos locais que violaram o limite. Foram observados valores acima dos permitidos para as concentrações de nitrato, alumínio, ferro, cádmio, manganês e turbidez.Palavras Chave: Carste, Alto São Francisco, Arcos-Pains Abstract:USE OF HYDROCHEMICAL MAPPING FOR QUALITY EVALUATION OF SURFACE WATERS, SÃO MIGUEL RIVER BASIN, MINAS GERAIS. The study aimed to check the waters quality of the karst region of the São Miguel River (≈520 Km2), a tributary of the São Francisco river, located in the karst province of Arcos-Pains, and belonging to the Upper San Francisco Basin (235,635 Km2). In order to evaluate the quality of surface waters with the use of hydrochemical mapping, chemical analyzes were performed in 34 basin sites during the dry season and the rainy season. The analysis included the determination of physicochemical parameters (temperature, pH, Eh, CE, STD, dissolved oxygen and turbidity), as well as the concentration of anions (NO3-, PO43-, HCO3-, SO42- and Cl-), and major cations and trace elements. The data were treated and compared with the legal parameters which marked the ranges of isovalues plotted in the hydrochemical maps through the software Arcgis 10.1, facilitating in this way the visualization of the anomalies. Anomalies were observed in relation to the maximum values for turbidity and the concentrations of nitrate, aluminum, iron, cadmium and manganese.Keywords: Karst, Upper São Francisco, Arcos-Pains

Fluctuations of Annual Precipitation and Water Resources Quality in Ukraine

2016 ◽  
Vol 10 (4s) ◽  
pp. 621-629
Author(s):  
Valentina Pidlisnyuk ◽  
◽  
John Harrington JR ◽  
Yulia Melnyk ◽  
Yuliya Vystavna ◽  
...  
Keyword(s):  
Water Resources ◽  
Surface Waters ◽  
Precipitation Amount ◽  
Ion Concentration ◽  
Annual Precipitation ◽  
Resource Quality ◽  
Phosphate Ion ◽  
Regional Trends

The article focuses on examining the influence of fluctuations in annual precipitation amount on the quality of surface waters. Water quality was estimated with data on BOD, COD and phosphate–ion concentration within five selected regions of Ukraine. Analysis of the precipitation data (1991 – 2010) showed different regional trends. Using the statistics, determination of the interconnection between precipitation amount and water resources quality were done. The obtained regularities and associated uncertainties can be used for prediction of changes in water resource quality and as a guide for future adaptation to possible climate change.

Fecal and Coliform Levels as Indicative Factors in Deterioration of the Water Quality of

2014 ◽  
Vol 10 (1) ◽  
Author(s):  
EUKENE OPORTO BENSIG ◽  
MARY JOYCE L. FLORES ◽  
FLEURDELIZ F. MAGLANGIT
Keyword(s):  
Water Quality ◽  
Surface Waters ◽  
Physicochemical Parameters ◽  
Oxygen Demand ◽  
Aquatic Ecology ◽  
Total Dissolved Solids ◽  
Biological Oxygen Demand ◽  
Indicator Bacteria ◽  
The Difference

The use of surface waters such as rivers for domestic, agricultural andindustrial purposes have made them vulnerable to pollution leading to impairedwater quality. The water quality of Lahug River in Cebu City was evaluated usingcoliforms as indicators, in relation with physicochemical parameters such as biological oxygen demand (BOD), conductivity, dissolved oxygen (DO), nitrate,pH, phosphate, salinity, temperature, total dissolved solids (TDS) and totalsuspended solids (TSS). Sampling was done once a month from November 2011to April 2012 in three stations covering the upstream, midstream and downstream.The multiple tube fermentation technique was used for the analysis of coliforms.The level of these indicator bacteria increased from the upstream towards thelower reaches of the river especially in the months of February to April; however,the difference in values across time was not significant. This implies that therewas a continuous fecal pollution in the river. There were no statistically significantcorrelations between FCs and TCs with the physicochemical parameters. Anegative relationship was observed among FCs and TCs with pH, TSS, DOand nitrate (p>0.05). These results suggest the presence of sewage and organicpollutants in the river.Keywords: Aquatic Ecology, water quality, coliform, physicochemical parameters,experimental design, Philippines

scholarly journals Simultaneous Determination of Six Active Compounds in Yixin Badiranjibuya Granules, a Traditional Chinese Medicine, by RP-HPLC-UV Method

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Ning Yu ◽  
ChenHui He ◽  
Gulistan Awuti ◽  
Cheng Zeng ◽  
JianGuo Xing ◽  
...  
Keyword(s):  
Chinese Medicine ◽  
Rosmarinic Acid ◽  
Quality Evaluation ◽  
Scientific Basis ◽  
Determination Method ◽  
Rp Hplc ◽  
And Control ◽  
First Time

In this study, a sensitive, precise, and accurate HPLC-UV method was developed and validated to simultaneously determine the six analytes (luteolin-7-O-β-D-glucuronide, apigenin-7-O-β-D-glucuronide, diosmetin-7-O-β-D-glucuronide, acacetin-7-O-β-D-glucuronide, tilianin, and rosmarinic acid) in Yixin Badiranjibuya Granules, in which five analytes (i.e., luteolin-7-O-β-D-glucuronide, apigenin-7-O-β-D-glucuronide, diosmetin-7-O-β-D-glucuronide, acacetin-7-O-β-D-glucuronide, and rosmarinic acid) were determined for the first time in Yixin Badiranjibuya Granules, the content of tilianin in Yixin Badiranjibuya Granules was reported in other literatures, and the content of tilianin in our work was higher than that of the literature reports. The quality of 11 batch samples from four different manufacturers was evaluated using the proposed determination method. The contents of the six analytes were largely different among samples from various manufacturers. Therefore, this determination method can provide a scientific basis for quality evaluation and control of Yixin Badiranjibuya Granules.

Determination of some physicochemical parameteres and inorganic nutrient content of Gediz River (Manisa)

2015 ◽  
Vol 40 (3) ◽  
Author(s):  
Tuğba Şentürk ◽  
Şükran Yıldız
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Physicochemical Parameters ◽  
Nutrient Content ◽  
Nutrient Concentrations ◽  
Western Turkey ◽  
River Water Samples ◽  
Gediz River

AbstractObjective: This present investigation aimed at assessing the water quality of the Gediz River located in western Turkey.Methods: Some physicochemical parameters and nutrient concentrations of the surface water of Gediz River were determined over a period of twelve months (October to September 2012) at 5 sampling sites along the river.Results: Data on some ions namely NHConclusion: This indicates pollution of the river water samples from the areas studied. Our findings highlighted the deterioration of water quality of the river due to anthropogenic and agriculturel activities.

Simultaneous Determination of Five Active Components in the Chinese Patent Medicine Niuhuang Jiangya Pill by HPLC-MS/MS

2017 ◽  
Vol 100 (3) ◽  
pp. 717-720
Author(s):  
Shan Xiong ◽  
Shanshan Lei
Keyword(s):  
Simultaneous Determination ◽  
Quality Evaluation ◽  
Gradient Elution ◽  
Astragaloside Iv ◽  
Active Components ◽  
Patent Medicines ◽  
Chinese Patent Medicine ◽  
Chinese Patent

Abstract Niuhuang Jiangya (NHJY) pill is one of the well-known Chinese patent medicines in China used in the treatment of high blood pressure. The primary purpose of this study was to establish and validate a method using HPLC with tandem MS for the quality evaluation of NHJY pill through simultaneous determination of the following five active components: baicalin, paeoniflorin, astragaloside IV, ferulic acid, and emodin. Chromatographic separation was carried out on a Hypersil GOLD HPLC C18 column (50 × 4.6 mm, 3 μm) with acetonitrileand water as mobile phase and gradient elution at a flow rateof 0.4 mL/min. The method established in this study was selective, linear, precise, and accurate and was successfully applied to evaluate five active components in NHJY pill collectedfrom different production batches, which could be considered a good approach to control the quality of NHJY pill and other related botanical drugs.

Determination of the Bearing Quality by Means of Vibroacoustic Response

2015 ◽  
Author(s):  
Stanislav Ziaran ◽  
Milos Musil ◽  
Ondrej Chlebo
Keyword(s):  
Quality Evaluation ◽  
Dynamical Response ◽  
Frequency Interval ◽  
Maximum Acceleration ◽  
Operational Conditions ◽  
Means Of Measurement ◽  
Damage Type ◽  
The Given

A signal of mechanical and acoustical vibration generated during a bearing’s quality testing contains variety of useful information about their operational conditions. At defined testing speeds, the bearings generate a periodical and a non-periodical vibroacoustic signal of different intensities, which are dependent on the quality of bearings and/or their damage type. A dynamical response of the tested bearings recorded in time characterizes also the nature of the unwanted noise of bearings. Therefore the dynamical response of the maximum acceleration recorded in time is one of the major criteria of bearing quality evaluation in terms of noisiness. The second criterion is a determination of statistically significant frequency interval for the equivalent acceleration value expressed in decibels. Consequently, from the effective acceleration value, the bearing quality can be determined in terms of its vibration severity, as well as its noise level. This objective methodology substitutes the evaluation bearing quality by means of measurement of the vibration acceleration on the given test device and simultaneously evaluation of the noise quality and its intensity auditorily. Verifying the proposed methodology 100 % conformity was achieved between the methodology currently used and the new methodology, which eliminates the subjective quality evaluation of bearings auditorily.

scholarly journals Relationship between the properties of raw and cooked spaghetti – new indices for pasta quality evaluation

2018 ◽  
Vol 32 (2) ◽  
pp. 217-223 ◽  
Author(s):  
Beata Biernacka ◽  
Dariusz Dziki ◽  
Renata Różyło ◽  
Monika Wójcik ◽  
Antoni Miś ◽  
...  
Keyword(s):  
Quality Evaluation ◽  
Strength Properties ◽  
Quality Parameters ◽  
Bending Test ◽  
Cooking Properties ◽  
Cooking Test ◽  
Colour Parameters ◽  
Important Quality

Abstract The quality of pasta can be evaluated by measuring the characteristics which encompass the most important quality parameters, such as colour, cooking properties and texture. The aim of the study was to suggest new indices which can be used to evaluate the quality of pasta. For the tests, 15 samples of spaghetti (produced from either semolina or common wheat flour) were used. The bending test was performed for the determination of the strength properties of raw pasta, while the pasta colour parameters were evaluated via the Commission Internationale de l’Eclairage system. The pasta cooking test included the evaluation of optimum cooking time, weight increase index and cooking loss. The samples of cooked spaghetti were cut, and the parameters describing pasta texture were determined. Statistical analysis showed significant correlations (α = 0.05) between colour parameters (lightness and redness) and pasta ash content (R = -0.90 and 0.84, respectively). The mechanical properties of raw pasta correlated positively with pasta density. The strongest correlation was found between pasta density and flexural strength. The destruction force for raw spaghetti during the bending test correlated significantly and positively with the cutting force of the cooked pasta. The obtained correlations can be helpful in pasta quality evaluation.

scholarly journals The water quality of the river Svratka and its tributaries

2013 ◽  
Vol 61 (1) ◽  
pp. 65-70 ◽  
Author(s):  
Jan Grmela ◽  
Tomáš Vítek ◽  
Radovan Kopp
Keyword(s):  
Water Quality ◽  
Physicochemical Parameters ◽  
Quality Evaluation ◽  
Vegetation Period ◽  
Water Quality Evaluation ◽  
Quality Class ◽  
The Third ◽  
Annual Total ◽  
Annual Amount

Water quality in river depends on water quality of its tributaries. During the year 2011 nine selected sites downstream under the Vír dam (from 108 to 79 river km) were monitored. For observation were chosen tributaries Besének, Loučka, Nedvědička, Chlebský creek, Hodonínka, Vrtěžířský creek and Tresný creek. At the same time samples from the places above and under the whole monitored section of the river were taken. Basic physicochemical parameters were monitored monthly during the vegetation period. Flow velocity and discharge were assessed three times. Based on the water quality evaluation of, the river Svratka and its tributaries Hodonínka, Vrtěžířský creek and Tresný creek belong to the second quality class, tributaries Besének, Loučka, Nedvědička and Chlebský belong to the third quality class. In the monitored section the retention of phosphorus in annual amount about 2.2 tons were occurance. Annual volume of phosphorus at the end of observed section (upstream the Tišnov town) was nearly 17.5 tons. Annual total balance of nitrogen at the end of monitored section was 700 tons per year and 6000 tons of carbon per year. The major source of these nutrients is the river Loučka.

scholarly journals Quality Evaluation of Tricholoma matsutake based on the Nucleic Acid Compounds by UPLC-TOF/MS and UPLC-QqQ/MS

Molecules ◽  
2018 ◽  
Vol 24 (1) ◽  
pp. 34 ◽  
Author(s):  
Ying Xue ◽  
Wei Jin ◽  
Xian-Shun Xu ◽  
Li Yong ◽  
Bin Hu ◽  
...  
Keyword(s):  
Nucleic Acid ◽  
Quality Evaluation ◽  
Southwest China ◽  
Total Content ◽  
Tricholoma Matsutake ◽  
Molecular Formula ◽  
Combined Use ◽  
Tof Ms

So far, there has been no quality evaluation of Tricholoma matsutake. Nucleic acid compounds are a kind of functional ingredient in T. matsutake that is beneficial to human health. In this study, a UPLC-TOF/MS method was first used to scan and identify the potential nucleic acid compounds in T. matsutake. Based on the calculation of the molecular formula and subsequent confirmation by authentic standards, 15 nucleic acid compounds were unambiguously identified: adenosine, cytidine, guanosine, inosine, thymidine, uridine, xanthosine dehydrate, 2′-deoxyadenosine, 2′-deoxycytidine, 2′-deoxyguanosine, 2′-deoxyuridine, adenosine 5′-monophosphate, cytidine 5′-monophosphate, guanosine 5′-monophosphate, and uridine 5′-monophosphate. Then, a UPLC-QqQ/MS method was developed for the subsequent quantitative analysis. After validating the limits of quantification, detection, precision, repeatability, and recovery through a calibration curve, the content of 15 nucleic acid compounds was determined by the proposed UPLC-QqQ/MS method in 80 T. matsutake samples collected from different regions in Sichuan province, Southwest China. After the statistical analysis, we suggest that the total content of nucleic acid compounds in the qualified T. matsutake should be higher than 24.49 mg/100 g. The results indicated that the combined use of UPLC-TOF/MS and UPLC-QqQ/MS is efficient for fast identification and determination of nucleic acid compounds to comprehensively evaluate the quality of T. matsutake.

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