Water Analysis - Science topic

The complex interactions between nanoparticles and ion behavior in subsurface water systems had crucial implications for understanding the dynamics of petroleum reservoirs. This study investigated the intricate relationship between ultra-dispersed particles of bentonite and conductivity changes in pore water. We examined the mechanisms underlying i...

This study provides a comprehensive review of eutrophication assessment and simulation within surface water ecosystems. It is noted that the majority of contemporary models and assessment methodologies fail to account for variations in local stream characteristics and their consequent impacts on biotic communities. To visualize the progression and...

In June 2023, following the breach of the Nova Kakhovka Dam during the Ukraine-Russia war, a comprehensive study was conducted along the Romanian Black Sea coast to assess water quality and mesozooplankton communities. Surface water analyses revealed significant gradients in nutrient levels and salinity, particularly from north to south, influenced...

O presente trabalho tem como objetivo determinar o Índice do Estado Trófico nas águas do rio Itanhém, no trecho da sub-bacia compreendida entre os municípios de Teixeira de Freitas e Alcobaça. As análises seguiram o recomendado pela American Public Health Association (APHA) descritas no Manual Prático de Análise de Água. Os resultados evidenciaram...

Background Bacterial contamination of outlet water from dental unit waterlines (DUWLs) may lead to healthcare-associated infection. The aim of this study was to evaluate the contamination of DUWLs from new dental chairs before and after their initial shock disinfection with ICX Renew® and to determine the efficacy of this method of shock disinfecti...

analisis de agua de lluvia

Pesticides control pests and diseases in crops in order to enhance agricultural productivity; however, they are responsible for damaging aquatic resources. This study aimed to assess pesticide residues in aquatic ecosystems in Burkina Faso. Data were collected in two sampling sites: Bama and Banzon. Thus, in each sampling site, 35 producers were ra...

Este trabalho objetivou estimar e mapear a salinidade das águas superficiais do Estado da Paraíba para fins de irrigação. Foram obtidos dados de Condutividade Elétrica (CE) e os parâmetros de Cálcio (Ca2+), Magnésio (Mg2+) e Sódio (Na+) de 83 amostras de análises de água de açudes e rios de diversas fontes e utilizando o QGIS® foram geoespacializad...

Nutrition is a key step for the seasonal and future performances of the vineyard. Nevertheless, its effectiveness is connected to environmental conditions such as soil and climate. Lean areas show little nutrient availability but at the same time produce renowned wines. Under these conditions, and in the face of climate change, viticulture is in a...

The current study was conducted from November, 2023 to June, 2024 in the villages of the Kashi Vidyapith block of Varanasi district, Uttar Pradesh (221 107), India to assess soil and water quality status. We have collected forty GPS (Global Positioning System)-based soil samples from depths of 0–15 cm and thirty water samples from the villages. Th...

An application of unsupervised chemometrics methods using periodic table properties for an analytical chemistry laboratory exercise is presented. Chemometric techniques such as hierarchical clustering analysis (HCA), k-means, and principal component analysis (PCA) were applied to a multivariate data set of chemical properties of the elements (atomi...

This study investigates the impact of industrial wastewater from leather, household, and marble sources on the growth, physiological traits, and biochemical responses of Momordica charantia (bitter melon). Industrial activities often lead to the release of contaminated effluents, which can significantly affect plant health and agricultural producti...

The development of affordable and reliable methods for quantitative determination of stable atomic nuclei in aqueous solutions and adjuvant agents used in tumor chemotherapy is an important task in modern pharmaceutical chemistry. This work quantified the deuterium/prothium isotope ratio in aqueous solutions through an original two-dimensional diff...

Despite the absence of recent research, Mapanuepe Lake in the Philippines has been a significant environmental concern due to potential heavy metal contamination. Hence, the study assessed the heavy metal concentration of water and surface sediments and identified the other physicochemical properties of Mapanuepe Lake in San Marcelino, Zambales, Ph...

The base‐promoted Kemp elimination reaction has been used as a model system for enzyme design. Among the multiple computationally designed and evolved Kemp eliminases generated along the years, the HG3‐to‐HG3.17 evolutionary trajectory is particularly interesting due to the high catalytic efficiency of HG3.17 and the debated role of glutamine 50 (G...

This study aims to evaluate the black bullhead Ameiurus melas, an invasive alien fish (IAF) in Serbia, as a bioindicator organism and assess the safety of natural and aquaculture specimens for human consumption. A set of biomarkers was analysed to assess the bioindicator potential at a site exposed to agricultural activities. The genotoxic response...

Water analysis sampling was carried out in Omor and its environs in Ayamelum Local Government Area of Anambra State. The communities mapped include Omor and Anaku. The area is situated between latitudes N6 28' and N6 32' and longitudes E6 55' and E6 59'. A total land coverage area of 56.25km was covered. The research aimed to study the agricultural...

Water analysis sampling was carried out in Omor and its environs in Ayamelum Local Government Area of Anambra State. The communities mapped include Omor and Anaku. The area is situated between latitudes N6 28' and N6 32' and longitudes E6 55' and E6 59'. A total land coverage area of 56.25km was covered. The research aimed to study the agricultural...

Fish, being highly sensitive to changes in the physico-chemical parameters of water, are good indicators of contamination. Teesta, a prominent northern West Bengal River system, is increasingly contaminated due to anthropogenic activities. This study aims to determine agricultural pesticide contamination and its genotoxic impact on the resident fis...

Key Takeaways Many sensory methods are standardized, and new ones are being developed, to assess the aesthetic quality of source water and treated drinking water. In Standard Methods for the Examination of Water and Wastewater , sections 2110 and 2150 have been updated, and section 2150D, “Attribute Rating Test” (ART), has been added. ART is a tech...

Irregular waste storage at closed mine sites poses severe environmental problems. This study evaluates the concentrations and effects of trace elements released into the environment by mining activity by analyzing soil, water, and sediment samples taken from a copper mining site. According to the data, acidic mine drainage was the main cause of the...

Study’s Excerpt Water quality and the prevalence of waterborne diseases in Chikun Local Government Area, Kaduna State, were assessed. Microbiological analyses revealed microbial, helminth and protozoan contamination in water sources while Physicochemical analyses revealed heavy metal contamination. There is a need for enhanced water treatment and c...

This study aims to evaluate the black bullhead Ameiurus melas, an invasive alien fish (IAF) in Serbia, as a bioindicator organism and the safety of natural and aquaculture specimens for human consumption. A set of biomarkers was analysed to assess the bioindicator potential at site exposed to agricultural activities. The genotoxic response was dete...

Understanding the seasonal variations in the landfill leachate plumes (LLPs) properties and complex connections between concentrations of leachate variability, and its environment is essential for environmental and public health management. This study explores the combined electrical resistivity (ER) data and physiochemical water analysis (PWA) cou...

This study explored the potential of using freshwater flora to assess heavy metal and pesticide pollution in water bodies. A survey on agrochemical usage was conducted in five Grama Niladhari divisions in Matara, Sri Lanka, through direct interviews with one hundred farmers. The study was carried out in the Thihagoda canal by collecting samples of...

An integrated membrane filtration system was developed to make water purity suitable for microbiology/molecular biology research. Water samples were collected from outlets in different buildings of the National Research Center and analyzed for their composition before filtration. An integrated membrane system was developed based on mathematical mod...

The present study investigated the anion composition of drinking water from various cities and villages in Armenia, including spring water and tap water samples. The simultaneous separation was achieved for fluoride, chloride, bromide, nitrite, nitrate, sulfate, and phosphate anions with the correlation coefficients >0.998. Validation of the method...

Autor: Tannia Vargas Créditos: 120/2,5 Carrera: Ingeniería en Zootecnia Número de semanas: 16 Proyecto a realizar: Aplicación de técnicas de análisis químico para evaluar la calidad y composición de alimentos, suelos y agua, asegurando la nutrición y sanidad animal en sistemas de producción sostenible. Problema del mundo real a resolver: ¿Cómo gara...

Water-based studies have come into prominence for illegal substance monitoring. There are limited studies on the detection of these substances in the surface waters as opposed to wastewater. This study aims to evaluate amphetamine, benzoylecgonine, cocaine, codeine, 3,4-methylenedioxy-N-methylamphetamine, morphine, and 11-nor-Δ9- tetrahydrocannabin...

This study experimentally investigates the integration of a flat plate solar collector and a condensation chamber into a basin solar still. Three prototypes were designed and constructed for evaluation: a basin solar still coupled to both a solar collector and a condensation chamber, a basin coupled with a solar collector, and a simple basin solar...

Quando excitados por uma fonte de energia externa, como uma chama, um arco elétrico ou uma faísca, os elétrons dos átomos em seus estados fundamentais são excitados para outros estados mais energéticos e, quando retornam aos seus estados de energia mais baixos, emitem fótons. O uso desse processo físico para fins analíticos quantitativos é conhecid...

This study aimed to conduct a multidisciplinary investigation integrating detailed morphology, molecular characterization, water parameters, histopathology alteration, and the trials of treatment of Clinostomum spp. In this study, 300 Nile tilapia (Oreochromis niloticus) were collected from the farmed and wild Nile River at Al Bahr Al Aazam, Giza G...

Ground water occurrence and distribution in a basement complex is localize and confined to weathered / fractured zone. Hence, exploration of groundwater in such terrain poses a great threat and challenge to the Ibwa community. This study was aimed at using vertical electrical sounding (VES) method to investigate the level of ground water contaminat...

hydrogen production via water electrolysis under the influence of laser sounds fascinating with its unique properties, was particularly effective in promoting hydrogen production. The mechanism by which the laser promotes hydrogen production The electrolytic cell used in this work contains 270 ml of distilled water stimulated with different amounts...

The investigation revealed the presence of a total of 16 species of aquatic insects in Maguri Beel and Khamti Guali Beel, two freshwater ecosystems, in Assam, India. The distribution and diversity of species present in the two wetlands with an account of physico-chemical water analysis and macrophyte distribution are discussed. Variation in the div...

The present study was conducted in the seasonal pond at Nediyenga, Sreekandapuram (Northern side of Kannur District), Kerala, India during June 2022 - October 2023. The pond is renowned for the range of microhabitats and temporal dynamics that support a broad diversity of vascular plants. A total of 53 plant species were recorded and herbs dominate...

With the potential of the agricultural sector, Bojonegoro Regency certainly requires an abundant supply of clean water. To overcome this problem, the Bojonegoro Regency Government built reservoirs to protect clean water supply in several areas in Bojonegoro Regency. The utilization of existing embung in Bojonegoro is not limited to agriculture only...

Nitrosamines and semi-volatile organic compounds (SVOCs) are carcinogenic contaminants in water and biological matrices. Conventional analytical methods often struggle to detect trace concentrations due to poor extraction efficacies. This study presents a novel, low-cost, in-syringe-assisted fast extraction cum cleanup technique coupled with GC-FID...

The study focused on the comparative analysis of the food laboratories of three campuses a State University. Food safety audits using Sanitation Standard Operating Procedure (SSOP) and current Good Manufacturing Procedures (cGMP) were instruments in evaluating the laboratories. Conformances were determined except on maintenance on hand washing and...

The machine-learning tool MS2Tox can prioritize hazardous nontargeted molecular features in environmental waters, by predicting acute fish lethality of unknown molecules based on their MS² spectra, prior to structural annotation. It has yet to be investigated how the extent of molecular coverage, MS² spectra quality, and toxicity prediction confide...

The failure of mass production of Spirulina plateaus can be attributed to an imbalance of nutrients (C:N) and an increase in accumulated sodium ions, coupled with the traditional harvesting process. The current study aims at the recovery of stressed and red cultures of Spirulina platensis as well as enhanced phycocyanin accumulation. The stressed S...

The development of ISE-based sensors for the analysis of nitrates in liquid phase is described in this work. Focusing on the tetradodecylammonium nitrate (TDDAN) ion exchanger as well as on fluoropolysiloxane (FPSX) polymer-based layers, electrodeposited matrixes containing double-walled carbon nanotubes (DWCNTs), embedded in either polyethylenedio...

Azimuthal resistivity sounding was carried out at five (5) locations around three abandoned dumpsites at Owerri, Orlu, and Okigwe in Imo State, Southeastern Nigeria. The Schlumberger Electrode Array was employed in the survey. The constant current electrode spacing (a) and potential electrode spacing (b) were rotated about the center of each Azimut...

The aim of the research is to justify the need to incorporate elements of analytical chemistry of the aquatic environment into the process of conducting practically oriented chemistry lessons in specialized chemistry-biology classes in grades 10-11 of secondary schools. The paper shows how simple methods of water environment research can engage pup...

Research indicates that habitat alterations and human activities are adversely affecting the fishery production potential of Nigeria's coastal water bodies, including the river of the Lower Niger (LRN)). These crucial sources of fish, which are vital for food and economic security, are experiencing a gradual decline. Consequently, this paper examin...

Metagenomics represents a pivotal development in genomics, offering unprecedented insights into a diverse spectrum of microorganisms, including bacteria, viruses, and fungi, that were previously challenging or impossible to study outside natural environments. Its applications span a remarkable range, from exploring cosmic entities to the depths of...

This study investigated the interaction between al parameters and fish abundance in Anambra River Basin. Both fish and water samples were collected between January and November, 2023. Fish samples were identified using keys and water analysis was done following standard protocols and procedures. Physico-chemical parameters and fish abundance vary a...

Data assimilation techniques are often confronted with challenges handlingcomplex high dimensional physical systems, because high precision simula-tion in complex high dimensional physical systems is computationally expen-sive and the exact observation functions that can be applied in these systemsare difficult to obtain. It prompts growing interes...

The Republic of Karakalpakstan in Uzbekistan characterized by a sharply continental climate and precipitation of less than 150 mm per year, saline soils and groundwater with high salt concentrations are widely distributed. The situation is exacerbated by the drying up of the Aral Sea and the appearance of salt aerosols in the region. The Bustan Can...

Data assimilation techniques are often confronted with challenges handling complex high dimensional physical systems, because high precision simulation in complex high dimensional physical systems is computationally expensive and the exact observation functions that can be applied in these systems are difficult to obtain. It prompts growing interes...

Limited clean water is the main problem in Ujung Gagak Village. The community can use no groundwater because the water is brackish and salty, which is unsuitable for daily activities. This study aims to analyze the potential of the Karang Cave spring to be used as drinking water. This spring plays an important role in the life of the people of Ujun...

Soil erosion by water and inappropriate land management practices result in poor agricultural production in the highlands of Ethiopia. Cover crops (CCs) are a promising cropping system to ameliorate soil health and agricultural production. A field plot experiment was carried out during the rainy seasons of 2019 and 2020 to assess the effects of CCs...

This paper presents a detailed analysis and investment-grade proposal for implementing a Closed Loop Heat Exchange System at the Materials Research Lab. The study includes a comprehensive water audit, identifying significant water consumption from process equipment, and proposes a closed loop system to eliminate once-through city water usage. The s...

This comprehensive report details a thorough water balance analysis and identifies key water efficiency opportunities for the AMGEN Pharmaceuticals ATO Campus in Thousand Oaks, California. The study, conducted by Water Efficiency Technologies LLC, covers an extensive audit of the campus's water use across various systems, including domestic water,...

Soil erosion by water and inappropriate land management practices result in poor agricultural production in the highlands of Ethiopia. Cover crops (CCs) are a promising cropping system to ameliorate soil health and agricultural production. A field plot experiment was carried out during the rainy seasons of 2019 and 2020 to assess the effects of CCs...

Water quality in coastal recreational areas is of significant importance for public health and environmental preservation. Contamination by thermotolerant coliforms on beaches is a critical indicator of health risks to bathers, requiring continuous monitoring to ensure that bathing conditions meet safety standards. It is imperative to implement eff...

Dado el deterioro ambiental en nuestro planeta, es imperativo contar con información sobre espacios contaminados en zonas urbanas y rurales, y una de las metodologías más utilizadas es el mapeo y la identificación de sitios potencialmente contaminados. Nuestro objetivo fue identificar sitios con estas características en Baja California Sur, México....

Studies on aquatic pollution are crucial for maintaining environmental health. This study assessed the toxicity of effluents from the male hostel site II at Delta State University (DELSU) on Oreochromis niloticus fingerlings. Behavioral responses and mortality rates were observed as toxicity indicators. The physicochemical characteristics of the ra...

Mass spectrometry (MS) is a widely used analytical technique including medical diagnostics, forensic toxicology, food and water analysis. The gold standard for quantifying compounds involves using stable isotope-labeled internal standards (SIL-IS). However, when these standards are not commercially available, are prohibitively expensive, or are ext...

A questão do saneamento básico, intrinsecamente ligada à saúde pública, enfrenta desafios consideráveis no Brasil, especialmente em áreas rurais e comunidades tradicionais. Assim, são relevantes pesquisas e ações que venham contribuir para o preenchimento das lacunas do saneamento dessas regiões. Este estudo buscou avaliar o sistema de abasteciment...

English Nano Lab offers comprehensive analysis services with the highest quality standards in the industry. For food safety and quality control, our Food-Shelf Life Studies (accelerated, real-time, and WFP shelf life studies) assess the long-term safety of products. We also provide analysis for Food-Pesticides, Food-GMOs, and Food-Veterinary Drug R...

This work introduces a ground-breaking electrochemical sensor for selectively detecting arsenic, a toxic contaminant, in water. The sensor merges the high sensitivity of stripping voltammetry with the powerful data analysis of chemometrics, achieving exceptional detection limits. By optimizing deposition potential, time, and scan rate, the analytic...

A study was conducted in Tahtay Adyabo northern Ethiopia to assess the salinity and irrigation water quality at farmer-level irrigation sites in the year of 2012. irrigation sites was identified and sampling units was assigned. 38 soil samples were collected from 19 plots (Dugub, Endaserawat, Mytewldish, Egum dima, and scattered wells in Mentebteb...

The presence of lenses such as tailings slurry, frozen soil, and saturated zones disrupts the continuity of tailings dams and their normal seepage patterns, elevating the seepage line of the dam body and significantly impacting local stability. This study, to investigate how lenses affect the stability and failure mechanisms of tailings dams, emplo...

A produção de sedimentos, além de indicar a qualidade ambiental, também demonstra a pressão que o ser humano exerce sobre o meio ambiente. Algumas consequências do uso inadequado do solo, como por exemplo o desmatamento, causam a diminuição no tempo de acumulação das águas nas bacias hidrográficas, provocando picos de cheias, e as alterações ambien...

A produção de sedimentos, além de indicar a qualidade ambiental, também demonstra a pressão que o ser humano exerce sobre o meio ambiente. Algumas consequências do uso inadequado do solo, como por exemplo o desmatamento, causam a diminuição no tempo de acumulação das águas nas bacias hidrográficas, provocando picos de cheias, e as alterações ambien...

Water is often contaminated with harmful chemicals due to human activities such as population growth, industry, fertilizer usage, and industrialization. One of the leading causes of environmental damage is the release of industrial waste