organic nitrogen phosphorus and sulfur in soils

... chlorinated aromatics [70], various dyes (i.e., acid orange 8, gentian violet) [62,71] and several proteins (bovine serum albumin, hen egg-white ovalbumin and bovine serum gamma-globulin) [72] In ... concentrations using HPLC techniques [65] In addition, aromatic compounds of similar chemical structure are used in the dying industry and in the manufacture of fungicides and pharmaceuticals and have ... that take place in a photocatalytic process and involve H2 O2 , • OH and O2 •− The following pertinent reactions have appeared in the literature dealing with TiO2 photocatalysis and the effect...

Ngày tải lên: 16/03/2014, 00:07

... EQUlLmRIA AND KINETICS IN SOILS (1.17) where Zi is the valence of the metal or ligand whose total molality is m Ti and the sum is over all metals (including hydrogen) and ligands (including hydroxide) ... mathematical expression for In 'Y ± (or In 'YM and In 'YL) should include both linear and bilinear terms in the molalities of all metals and ligands (or all charged species) in an aqueous solution ... soft or hard metal cations and increasingly soft inorganic anions The same trends are observed if a spectrum of a-containing organic functional groups to S-containing organic functional groups...

Ngày tải lên: 01/04/2014, 10:28

... handling and dedicated work in the field and in the laboratory and K Jackson for language revision References Andersson F., Persson T (1988): Liming as a countermeasure against acidification in ... important input into the mountainous catchments of the Czech Republic In: Proceedings of the International Conference on Interdisciplinary Approaches in Small Catchment Hydrology: Monitoring and Research ... radiation and to hold the funnels approximately m above the ground There were collectors randomly distributed at the mountain spruce stand and at the highland spruce stand During the winter the...

Ngày tải lên: 07/08/2014, 10:21

... partitioning and speciation study (DOC and DIC refer to dissolved organic and inorganic carbon, respectively) 212 Table A-2 Data for nickel partitioning and speciation study (DOC and DIC refers ... fetida) and springtails (Folsomia candida)) and microbes (potential nitrification rate and glucose induced respiration) in the same soils that were used for the corresponding speciation studies, and ... Nachtegaal and Sparks, 2003) Therefore, these mineral phases in soils also need to be taken into consideration in modeling the speciation and partitioning of metals 2.2.4 Dissolved organic carbon...

Ngày tải lên: 13/11/2014, 11:21

... symbiotic nitrogen fixation activity is influenced by many biotic and abiotic factors (Sprent and Minchin, 1983) The nitrogen fixation rate is highest at the end of flowering and during the pod filling ... in the center, which consists of the mosaic of small uninfected cells and large infected cells The infected cells contain O2 binding protein "leghemoglobin (Lb)" that keep an important role in ... for studying of nitrogen fixation in plants By using 15 N stable isotope, researchers have found the pathways of nitrogen compounds assimilating and transporting in plants The results indicated...

Ngày tải lên: 20/05/2016, 16:28

... Biodegradation; Dissolved organic matter; DOC Introduction In the past 10 years, much progress has been made in the understanding of dissolved organic matter (DOM) functions and dynamics in soils Today, it ... TOCa inoculum Pinney et al., 2000b Zsolnay and Steindl, 1991d; Qualls and Haines, 1992; Boissier and Fontvieille, 1993; Raymond and Bauer, 2001 inoculum + nutrients Zsolnay, 1996; Marschner and ... processes interact to determine the stability or biodegradability of organic matter in soils In this paper, factors and mechanisms are reviewed that control the microbial degradation of DOM in soils...

Ngày tải lên: 15/03/2014, 23:22

... clay minerals and oxides and hydroxides [21] may protect the diester-P in the clay and silt fractions from mineralization and explain the higher diester proportion observed in VR and NF soils ... forms of P in non-fertilized and P-fertilized soils (figure 1) As can be seen in table IV and table V, in FG and VR soils, the concentrations of Pi forms in fertilized soils were lower than in non-fertilized ... were determined after ignition (550 °C, 17 h) and dissolution of the residue in 0.1 M H2SO4 Inorganic P in the NaOH extract (P i) was measured directly in the extracts, and organic P in the NaOH...

Ngày tải lên: 08/08/2014, 14:21

... SAMPLING COLLECTION AND TESTING Plants, soils and water samples at six locations had been taken in order to quantify the leveling of arsenic contaminant Five sampling locations are within the interesting ... gold mine The results would give the preliminary informations for planning to use in this area which will be advantageous for managing the agriculture and living area in near future GENERAL INFORMATION ... arsenic contaminated in other medias not only in the water To acquire the solution, this study was performed to investigate the contaminant of arsenics in soils and plants compared to those in water...

Ngày tải lên: 25/04/2013, 08:21

... tion New tion ba ba bat bat incu incu incu incu 1st 2nd 3rd 4th Figure Change in amount of organic carbon on PAC for every incubation by glucose According to Sutherland (2001), extracellular polymers ... 3,5-DCP concentrations in the PACT and the control reactors during and after the shock loading of 3,5-DCP The peak concentration in the PACT and the control reactors were 6.0 and 45.3 mg l-1, respectively ... acid-water/acetonitrile in a 40/60 ratio, and flow rate of 0.8 ml/min (Barbeni et al., 1987) MLSS was determined following to the Standard Methods for Examination of Water and Wastewater (APHA,...

Ngày tải lên: 05/09/2013, 08:40

... of Water and Environment Technology, Vol.3, No.2, 2005 fields and forests on a plateau and a wetland which includes a paddy field in the lowlands Initial investigation showed that certain areas ... nitrate nitrogen concentration in the 0-1cm layer is shown in Fig.6, 1-2 cm layer is shown in Fig.7, 2-3 cm layer in Fig.8 and 5- cm layer is shown in Fig.9 At 0-1 cm layer, nitrogen removal in the ... Topographical Chain Jour JSIDRE 66(12),1223-1227. (in Japanese) Tabuchi T., Kuroda H.,(1991), Nitrogen Outflow Diagram in a Small Agricultural Area Having Uplands and Lowlands Trans JSIDRE 154,65-72. (in Japanese)...

Ngày tải lên: 05/09/2013, 09:08

... on soil was ignored The organic nitrogen dynamics was not considered because the differences between organic nitrogen (T-N minus inorganic nitrogen) in supplied water and in effluent was not so ... obtain better prediction of biomass production and water treatment and a detailed understanding of the nitrogen dynamics in VF constructed wetlands CONCLUSIONS In the experimental pots replicating ... 2006) The nitrogen uptake by rice is closely related with growth Assuming Monod-type nitrogen uptake kinetics (Selim and Iskandar, 1981) and ignoring the temperature effects, the NH4-N and NO2+3-N...

Ngày tải lên: 05/09/2013, 09:38

... shown in Fig In the anaerobic phase, PO4-P concentration increased to a certain value and remained constant in each run In Run1-1, PO4-P concentration in the anaerobic phase was higher than that in ... Water and Environment Technology, Vol 8, No.4, 2010 Phosphorus removal in SBR1 The PO4-P concentration in the effluent of SBR1 in Run1-1 to Run1-4 is shown in Fig In Run1-1, the mean and standard ... (components are listed in Table 1) was flowed into each reactor during the influent phase The concentrations of influent BOD, nitrogen and phosphorus were 200 mg/L, 50 mg/L and 5mg/L, respectively...

Ngày tải lên: 05/09/2013, 10:15

... 5.7 % industrial gases fertilizer and nitrogen compounds 21 polymers in primary forms 21 pesticide and plant protective lacquers and paints, printing ink and putty pharmaceutics soaps, washing ... and chemicals decreased from 269.3 million ATS in 1997 to 015.1 million ATS in 1998, corresponding to a decreasing rate of 3.9 % between 1997 and 1998 In comparison inorganic base materials and ... injection of quenching oil The quenching oil mainly consists of pyrolysis oil and is heated up to 180 °C during the oil quenching Highboiling components of the cracking gas are condensed during...

Ngày tải lên: 14/02/2014, 03:20

... supplies and aquatic biodiversity Fish kills and observations of intersex in fish have been increasing in regularity in the Shenandoah River and Potomac River basins in Virginia (Blazer and others, ... of Organic Chemicals in the North Fork of the Shenandoah River, Virginia, Spring 2007 dichloromethane and 200 μL of percent methoxyamineHCl in pyridine The samples were sealed in capped tubes and ... exhibiting external lesions, incidences of intersex, and death, have been observed recently within the Potomac River basin The basin receives surface runoff and direct inputs from agricultural, industrial,...

Ngày tải lên: 14/02/2014, 08:20

... The environmental setting of the McKenzie River basin and a discussion of sampling sites in the basin have been previously reported in McCarthy and others (2009) and Kelly and others (2012) Sample ... Devices and Polar Organic Chemical Integrative Samplers Deployed in the McKenzie River Basin, Oregon By Kathleen A McCarthy and David A Alvarez Prepared in cooperation with the Eugene Water and Electric ... Alvarez, David, Anderson, C.W., Cranor, W.L., Perkins, S.D., and Schroeder, Vickie, 2009, Evaluation of passive samplers for long-term monitoring of organic compounds in the untreated drinking water...

Ngày tải lên: 14/03/2014, 20:20

... 0:01) except for HOAc–Zn, indicating that soil extractable metals increased linearly with increasing biosolids rate and increased more sharply in the red fallow soil than in Taihu paddy soil Quadratic ... the three metals in the two soils can be explained by differences in soil organic matter content and pH and the in uence of these soil properties on the behaviour of the metals in the soil The ... available to plants and the mobility of metals in soils will determine the effects on vegetation and the environment Total concentrations of heavy metals in soils provide little or no indication of...

Ngày tải lên: 15/03/2014, 23:22

... between Pb and Cd metals using batch sorption isotherms and kinetics sorption studies for single and binary metal solutions in four soils Sorption isotherms for Pb and Cd in single and binary solutions ... single and binary solutions are similar in soils S1, S2 and S3 and about one order of magnitude lower in S4 than in the rest of the soils As described above, the mineralogical composition of soils ... solutions and soils using the Langmuir equation, ionic strength, the total metal retained in the soils, soils characteristics (including pH and clay content) and an empirical power function for kinetic...

Ngày tải lên: 15/03/2014, 23:22

Ngày tải lên: 15/03/2014, 23:22

... Chinese brake fern took up As mainly from Fe–As and Ca–As fractions in CCA soil, and from WE–As fraction in ASC soil Both compost and phosphate amendments increased As leaching from CCA soil in ... the DOC in both soils with more pronounced increase observed in the BS treatment (Fig 2c and d) In addition, the CCA soil contained more DOC than the ASC soil although the original OC in the ASC ... control and amended soils after the 2-week equilibration (Fig 2a and b) As expected, amending the soil with PR had no effect on DOC in both the CCA and ASC soils However, both composts increased...

Ngày tải lên: 16/03/2014, 00:07

... fraction whereas Cu is mainly in the strongly bound organic and residual phases Hewitt and Candy (1990), examined levels of Pb, Cd and Zn in soil and dust samples collected in and around the city ... exists from wind-blown dust Disruption of these soils during highway maintenance, including mowing, and excavation for resurfacing, will cause suspension of these heavily contaminated soils as small ... contamination in runoff, which is 68 µg L−1 , was obtained by taking the average of the five runoff events of Sansalone and Buchberger (1997) (Table I) Knowing that the average rainfall in Cincinnati...

Ngày tải lên: 16/03/2014, 00:25