Results 221 to 230 of about 214,319 (261)

The effectiveness of green roofs measured by nutrient, total suspended solids and total organic carbon content

2023
Green roofs are a useful tool to retain heat, limit the heat island effect and improve the sustainability of cities, but their effectiveness of nutrient retention is still up for debate. This is due to the fact that their ability to retain nutrients is highly dependent on growing media, plant type, climate, and rainfall amount and intensity. This study
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Analysis of Organic Matter in Water of Low TO C (Total Organic Carbon) Content by Chromatographic Techniques

International Journal of Environmental Analytical Chemistry, 1987
Abstract The problems encountered when analyzing organic pollutants in drinking water stem from the large number of unknown compounds at very low concentration. The concentration of the organics is carried out on n-alkyl silica, after a rigorous cleaning, or by liquid-liquid extraction.
P. Subra, M. C. Hennion, A. Foucault, R. Rosset   +3 more
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Predicting Total Organic Carbon Content of Soils from Walkley and Black Analysis

Communications in Soil Science and Plant Analysis, 2014
Globally, there is problem of computing soil carbon stock because the Walkley–Black method gives only an approximation of soil organic carbon content. Until now, no universal relationship between Walkley–Black carbon (WBC) and total soil organic carbon (TOC) has been developed that could be applicable in all kinds of soil.
Pramod Jha, A. K. Biswas, Brij Lal Lakaria, R. Saha, Muneshwar Singh, A. Subba Rao   +5 more
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The ratio of clay content to total organic carbon content is a useful parameter to predict adsorption of the herbicide butachlor in soils

Environmental Pollution, 2008
Thirteen soils collected from 11 provinces in eastern China were used to investigate the butachlor adsorption. The results indicated that the total organic carbon (TOC) content, clay content, amorphous Fe2O3 content, silt content, CEC, and pH had a combined effect on the butachlor sorption on soil.
Zhongzhen, Liu, Yan, He, Jianming, Xu, Panming, Huang, Ghulam, Jilani   +4 more
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Spectroscopic Determination of Soil Organic Carbon and Total Nitrogen Content in Pasture Soils

Communications in Soil Science and Plant Analysis, 2014
To explore a convenient and efficient approach for determining the content of soil organic carbon (SOC) and total nitrogen (TN), this study focused on capturing the features value of SOC and TN by applying the method of wavelet analysis and wavelet transformation. The soil used in the study was sampled from the pastures in Fukang City of Xinjiang Uygur
Zhengguo Sun, Yong Zhang, Jianlong Li, Wei Zhou   +3 more
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Total organic carbon content as an early warning indicator of soil degradation

Science Bulletin, 2023
Licheng, Guo, Shangfa, Xiong, Yulu, Chen, Jingyi, Cui, Shiling, Yang, Heng, Wang, Yongda, Wang, Zhongli, Ding   +7 more
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ORGANIC CARBON AND TOTAL NUTRIENT CONTENTS OF INCEPTISOL UNDER LONG-TERM FERTILISATION

Madras Agricultural Journal, 1996
Beneficial role of FYM in increasing the organic carbon content and total nutrients of the soil was evidenced when applied with inorganics (NPK). Application of NP fertilisers increased the nutrient status when compared to application of N alone. Regarding depth all the nutrients got decreased as the depth increased.
CHELLAMUTHU S, SHEEBA S
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A new method for estimating total organic carbon content from well logs

AAPG Bulletin, 2016
ABSTRACT With the booming exploration and development of unconventional hydrocarbon resources in source rocks, the estimation of total organic carbon (TOC) content from well logs has become increasingly important because of the significance of TOC in the formation evaluation of those resources.
Peiqiang Zhao, Zhiqiang Mao, Zhenhua Huang, Chong Zhang   +3 more
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Total Organic Carbon Content in Aqueous Samples Determined by Near-IR Spectroscopy

Applied Spectroscopy, 1999
We describe the application of near-infrared spectroscopy with partial least-squares (PLS) multivariate calibration to determine the total organic carbon (TOC) content of aqueous organic samples. We demonstrate a standard error of precision of approximately 0.50 mg/mL for the TOC content in aqueous organic mixtures of Na
Luis H. Espinoza, Donald Lucas, David Littlejohn, Steven Kyauk   +3 more
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Estimation of carbonate, total organic carbon, and biogenic silica content by FTIR and XRF techniques in lacustrine sediments

Journal of Paleolimnology, 2013
Major components of lacustrine sediments, such as carbonates, organic matter, and biogenic silica, provide significant paleoenvironmental information about lake systems. Fourier transform infrared spectroscopy (FTIR) and scanning X-ray fluorescence (XRF) techniques are fast, cost effective, efficient methods to determine the relative abundances of ...
Xiuju Liu, Steven M. Colman, Erik T. Brown, Elizabeth C. Minor, Hongyu Li   +4 more
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