[PDF][PDF] Produtos naturais utilizados como coagulantes e floculantes para tratamento de águas: uma revisão sobre benefícios e potencialidades

L Júnior, F Abreu - Revista Virtual de Química, 2018 - static.sites.sbq.org.br
O desenvolvimento de novos coagulantes e floculantes, baseados em matérias-primas
naturais biodegradáveis abundantes na natureza, vem ganhando cada vez mais espaço …

Interaction between roxarsone, an organic arsenic compound, with humic substances in the soil simulating environmental conditions

ALA Nascimento, IM Figueiredo, WG Botero… - Chemosphere, 2023 - Elsevier
In environmental systems, the soil is a principal route of contamination by various potentially
toxic species. Roxarsone (RX) is an arsenic (V) organic compound used to treat parasitic …

Anthropogenic signature of sediment organic matter probed by UV–Visible and fluorescence spectroscopy and the association with heavy metal enrichment

W He, JH Lee, J Hur - Chemosphere, 2016 - Elsevier
Sediment organic matter (SOM) was extracted in an alkaline solution from 43 stream
sediments in order to explore the anthropogenic signatures. The SOM spectroscopic …

Off-line TMAH-GC/MS and NMR characterization of humic substances extracted from river sediments of northwestern São Paulo under different soil uses

AM Tadini, G Pantano, AL de Toffoli, B Fontaine… - Science of the total …, 2015 - Elsevier
Humic substances (HS) vary according to the physical and chemical factors present in the
environment. Thus, the characterization of HS is very important because it improves the …

[PDF][PDF] Determinação de anti-inflamatórios na água e sedimento e suas relações com a qualidade da água na bacia do Alto Iguaçu, Curitiba-PR

RD Kramer, A Mizukawa… - Revista …, 2015 - abrh.s3.sa-east-1.amazonaws.com
RESUMO A contaminação ambiental por poluentes emergentes tem sido explorada em
diferentes pesquisas na área ambiental. Isso deve, em grande parte, pela baixa eficiência …

Characterization of typical aquatic humic substances in areas of sugarcane cultivation in Brazil using tetramethylammonium hydroxide thermochemolysis

AM Tadini, IC Constantino, A Nuzzo, R Spaccini… - Science of the Total …, 2015 - Elsevier
Aquatic humic substances (AHSs) differ from one environment to another depending on land
use and occupation. In addition, the effects of planting sugarcane on AHSs are not well …

[PDF][PDF] 垃圾渗滤液中溶解性有机物组分的三维荧光特性

贾陈忠, 王焰新, 张彩香, 秦巧燕 - 光谱学与光谱分析, 2012 - researching.cn
摘要运用三维荧光光谱技术研究了垃圾渗滤液中六种DOM 组分的荧光特性. 结果表明:
类富里酸, 类色氨酸和腐殖酸类物质是垃圾渗滤液DOM 的主要组成, 其中大量紫外区类富里酸 …

Unsupervised component analysis: PCA, POA and ICA data exploring-connecting the dots

JC Pereira, JCR Azevedo, HG Knapik… - Spectrochimica Acta Part …, 2016 - Elsevier
Under controlled conditions, each compound presents a specific spectral activity. Based on
this assumption, this article discusses Principal Component Analysis (PCA), Principal Object …

Risks associated of the waters from hydric systems Urban's: The case of the rio Barigui, south of Brazil

PRB Silva, C Poleto, CN Makara, AP Munaro… - Revista de chimie …, 2017 - lume.ufrgs.br
The quantification of a chemical species isolated in natural waters does not allow the
characterization of it as an environmental stressor. Therefore, it is necessary to associate …

The application of soil erosion models of an agroforestry basin under Mediterranean conditions from a geotechnical point of view

AP Leite, AC Duarte, L Marchiori, MV Morais, A Studart… - Land, 2024 - repositorio.ipcb.pt
Soil erosion has been causing an imbalance in nature and the environment. It is mainly
caused naturally but is also due to human interventions leading to desertification and …