نتایج جستجو برای: Water soluble organic carbon

تعداد نتایج: 1013937  

شریعتمداری, حسین, یوسفی, معصومه , حاج عباسی, محمد علی ,

  Adopting proper agricultural management and conserving soil organic matter are important components of sustainable agriculture. Soil organic matter content is a key attribute in soil quality. Labile organic matter pools can be considered as suitable indicators of soil quality that are very sensitive to changes in soil management practices. This research was carried out to investigate some org...

ژورنال: علوم آب و خاک 2008
شریعتمداری, حسین, یوسفی, معصومه , حاج عباسی, محمد علی ,

  Adopting proper agricultural management and conserving soil organic matter are important components of sustainable agriculture. Soil organic matter content is a key attribute in soil quality. Labile organic matter pools can be considered as suitable indicators of soil quality that are very sensitive to changes in soil management practices. This research was carried out to investigate some org...

2017
Constantini Samara

This article presents the distribution of the dithiothreitol-based (DTT) redox activity of water-soluble airborne particulate matter (PM) from two urban sites in the city of Thessaloniki, northern Greece in four size ranges (<0.49, 0.49–0.97, 0.97–3.0 and >3 μm). Seasonal and spatial variations are examined. The correlations of the mass-normalized DTT activity with the content of PM in water-so...

Journal: :Environmental pollution 2017
Min-Suk Bae James J Schauer Taehyoung Lee Ju-Hee Jeong Yoo-Keun Kim Chul-Un Ro Sang-Keun Song Zang-Ho Shon

This study investigated the relationship between water-soluble organic compounds of ambient particulate matter (PM) and cellular redox activity collected from May 28 to June 20 of 2016 at the west coastal site in the Republic of Korea during the KORea-US Air Quality (KORUS-AQ) campaign. Automatic four-hour integrated samples operated at a flow rate of 92 L per minute for the analysis of organic...

ژورنال: علوم آب و خاک 2017

The use of organic matter such as urban sewage sludge may help sustainable soil fertility via improving the physical, chemical and biological soil characteristics. The main purpose of this study was to determine the effect of urban sewage sludge on chemical properties, soil basal respiration and microbial biomass carbon in a calcareous soil with silty clay loam texture. Therefore, three levels ...

Journal: :Journal of environmental quality 2001
B U Ugwuegbu S O Prasher D Ahmad P Dutilleul

The prospect of using wastewater containing high loads of soluble organic matter (OM) for removing residual agricultural chemicals (fertilizer, pesticide, or herbicide) in farm soil, although promising, could have adverse effects on soil agricultural quality as a result of development of redoximorphic features in the soil profile. In this study, the effect of organic carbon supplement for biore...

Journal: :Bioresource technology 2004
Marco Grigatti Claudio Ciavatta Carlo Gessa

To use compost appropriately in agriculture it is extremely important to estimate the stabilization level of the organic matter. In this work, two different piles of compost were studied by means of (i) humification parameters (degree of humification--DH, humification rate--HR, humification index--HI) prior to and after enzymatic hydrolysis of the extracted organic carbon, (ii) water-soluble or...

2017
Havala O. T. Pye Benjamin N. Murphy Lu Xu Nga L. Ng Annmarie G. Carlton Hongyu Guo Rodney Weber Petros Vasilakos K. Wyat Appel Sri Hapsari Budisulistiorini Jason D. Surratt Athanasios Nenes Weiwei Hu Jose L. Jimenez Gabriel Isaacman-VanWertz Pawel K. Misztal Allen H. Goldstein

Organic compounds and liquid water are major aerosol constituents in the southeast United States (SE US). Water associated with inorganic constituents (inorganic water) can contribute to the partitioning medium for organic aerosol when relative humidities or organic matter to organic carbon (OM /OC) ratios are high such that separation relative humidities (SRH) are below the ambient relative hu...

2017
Masahiro Narukawa Kimitaka Kawamura Nobuo Takeuchi Teruyuki Nakajima

Fine aerosol particles collected in Southeast Asia during 1997 Indonesian forest fires were studied for the concentrations of total carbon (TC), water-soluble organic carbon (WSOC) and low molecular weight dicarboxylic acids (C2-C12) as well as carbon isotopic ratios of TC (δCTC). TC and WSOC showed a large increase during the heavy forest fire event. At the same period, dicarboxylic acids, dom...

2010
H. Timonen

A particle-into-liquid sampler (PILS) was coupled with a total organic carbon analyzer (TOC) and two ion chromatographs (IC) to enable high time-resolution measurements of water-soluble ions and water-soluble organic carbon (WSOC) by a single sampling and analytical setup. The new high time-resolution measurement system, the PILS-TOC-IC, was able to provide essential chemical and physical infor...

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