نتایج جستجو برای: free particulate organic matter and intra
تعداد نتایج: 16984102 فیلتر نتایج به سال:
The current study aimed to determine the isotopic composition of different food sources and their contribution to the diet of Parasesarma persicum inhibiting a mangrove ecosystem in the Persian Gulf. The potential food sources, i.e., Avicennia marina green and yellow leaves, Particulate Organic Matter (POM), Microphytobenthos (MPB), and Sediment Organic Matter (SOM) were collected for stable is...
Stable carbon isotope ratios in marine aerosol collected over the Southern Indian Ocean revealed δ13C values ranging from -20.0‰ to -28.2‰. The isotope ratios exhibited a strong correlation with the fractional organic matter (OM) enrichment in sea spray aerosol. The base-level isotope ratio of -20.0‰ is characteristic of an aged Dissolved Organic Matter (DOM) pool contributing a relatively homo...
The impact of human activities on the concentrations and composition of dissolved organic matter (DOM) and particulate organic matter (POM) was investigated in the Walloon Region of the Meuse River basin (Belgium). Water samples were collected at different hydrological periods along a gradient of human disturbance (50 sampling sites ranging from 8.0 to 20,407 km) and during a 1.5 year monitorin...
Airborne particulate matter (PM10 ) was collected from the atmosphere of the city of Isfahan. The concentration of heavy metals and anions associated with airborne particulate matter were determined using atomic absorption spectrometric and ion chromatographic techniques. A comparison was made between the variation in the concentration of PM10 and that for heavy metals and...
Rivers regulate the global carbon cycle by transferring particulate organic (POC) from terrestrial landscapes to marine sedimentary basins, but processes controlling amount and composition of fluvially exported POC are poorly understood. We propose that hydrodynamic sorting modify fluxes during fluvial transit. test this hypothesis studying transported along a ∼1,200 km reach Rio Bermejo, Argen...
in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...
Organic aerosols are a major component of particulate matter but have complex and uncertain effect on climate health.
Ž . Ž . The feeding and absorption rates ARs of the green mussel Perna Õiridis L. were studied from December 1997 to November 1998. During each visit, characteristics of seston including Ž . Ž . concentrations of total particulate matter TPM , particulate organic matter POM , particulate Ž . Ž . inorganic matter PIM and organic fraction of seston f were also determined. Higher values of Ž . Ž ....
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