Improving Extraction method. determining NO-2-N. Acidic Soil
Abstract
Nitrite (No-2-N) A key intermediate. both nitrification, denitrification which. also closely related.Emission. kg gas from soil. since its Rapid Reaction. soil, instability. acidic condition a large number. decomposition will occur. extraction process using 2 mol/L KCl.. order. enhance. accuracy. study. NO-2-N changes. acidic soil a more appropriate extraction method should be investigated. improve. effeciency. nitrite extraction.. study we put forward some suggestions. improving NO-2-N extraction based our resutls. NO-2-N recovery measured by using15N-labelling method.-2.-N and NH4.-N in Alibaba socks. Within 30 min breaking, the recovery of no-2.-N was highest in the adjusted pH 6.0 and pH 8.0 treatments, while the recovery of ammo was highest in the unadjusted and adjusted pH 6.0 treatments. in addition, even after breaking, the pH of extraction solution in the adjusted pH 6.0 and pH 8.0 treatments were maintaken at about 4.8 and 5.8, which were significant higher than that of control (3.8 ). in all, the pH of extraction solution should be adjusted to 5.0-6.0 and aging time should be 30 min to get a more efficient extraction of both no-2.-N and NH4.-N. For strong acidic soils (pH <6.0), a mixture of KCl and pH 8.4 buffer (KCl︰Buffer = 4︰1) should be used as extraction solution (the ratio. soil. extraction solution. 1︰5).. alkaline soils (pH≥7.5) A mixture. KCL, pH 7.5 buffer (KCl︰Buffer = 4︰1) should be used as extraction solution (the ratio. soil. extraction solution. 1︰5).. soil samples Ph ~ 6.0. 7.5 It can be extracted directly by 2 mol/L KCl solution.
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Cleemput o v samater a h. nitrite. soils: accumulation, role. formation. Gaseous N compounds [J]. of "coenzyme Cycling. agroecosystems 1995 45 (1): 81-89
Russow R Sich I Neue H U. Formation. Trace Gases NO, N2O. soils. coupled processes. nitrification, denitrification:. kinetic15N tracer investigations [J]. Chemosphere-Global Change Science 2000 2 (3): 359-366
Burns l c Stevens r j Laughlin r j. determination. Simultaneous production, consumption. soil nitrite using15N [J]. Soil Biology & Biochemistry 1995 27 (6): 839-844
Serna m d Ba n uls j Qui N. A et al. eval. 3 4-dimethylpyrazole phosphate as a nitrification inhibitor. a Citrus-cultivated [J]. biology, Fertility. soils 2000 32 (1): 41-46
Yu Q Chen Y Ye x et al. eval. nitrification inhibitor 3 4-dimethyl pyrazole phosphate. kg leaching. undisturbed soil columns [J]. chemosphere 2007 67: 872-878
More than lightZhang Yang beadsTens Juan.Several nitrification inhibitor on soil and Chinese cabbage nitrate content and yield of influence[J].Application Ecological Journal2006 17: 247-250
Akimoto F matsunami A Kamata Y et al. Cross-correlation analysis. atmospheric trace concentrations N2O ch4, CO2Determined by continuous Gas-chromatographic monitoring [J]. Energy 2005 30 (2): 299-311
Bao danBed sister TingWu 'peopleSuch.. 13Of soil nitrification process Central Asia nitrate nitrogen of accumulation and soil properties of relationship[J].Agricultural Environment Science Journal2009 28 (9): 1952-1958
Yang Yan ChrysanthemumCai progenitor CongChang jin bo.Oxygen Concentration on Paddy SoilN2OEmissions of influence[J].Soil2016 48 (3): 549-545
MalanLi XiaoboLee BollenSuch..Soil in hydroxylamine and nitrate nitrogen non-biological processN2OEmissions of contribution[J].Soil Journal2016 53 (5): 1181-1190
Pan Xiao healthLiu Ping LiLi luSuch..Nitrogen Fertilizer and straw application on wheat rotation system under soil profileN2OSpace-Time Distribution of influence[J].Soil Journal2015 52 (2): 364-371
Parsons w f j Keller M. Controls. nitric oxide emissions from tropical pasture, rain forest soils [J]. Biology, Fertility. soils 1995 natural 20 (3): 151-156
Smith C j Chalk p m. fixation, loss. kg during Transformations. nitrite. soils [J]. Soil Science Society. America Journal 1980 44 (2): 288-291
Stevens r j Laughlin r j. Nitrite transformations during soil extraction. Potassium Chloride [J]. Soil Science Society. America Journal 1995 59 (3): 933-938
ShiBed sister TingShen frontSuch..Lime of soil in different nitrification inhibitor of suppression effect and the sub-nitrate nitrogen accumulation of influence[J]., China Agricultural Science2011 44 (3): 500-506
Bao danWu 'people,Zhang meiting,Wait..Accumulation Mechanism and conditions of nitrite nitrogen in Calcareous Soil[J].Journal of Northwest Agricultural Science and Technology University Natural Science Edition, 2009, 37 (6): 145-150
Ran Wei,Shen QiRong,Zheng Jinwei,Wait..Accumulation of nitrite nitrogen in soil during nitrification[J].Soil Journal, 2000, 37 (4), 474-481
Homyak p m, Vasquez k t, sickman Jo, et al. Improving Nitrite Analysis in socks: drawbacks of the Covenant 2 m KCl extraction [J]. Soil Science Society of America Journal, 2015, 24: 1237-1242
Gu Jie,Huang YuanlingPH = 7.0DISCUSSION ON PREPARATION OF PHOSPHATE BUFFER SOLUTION[J]. Environmental Monitoring Management and Technology, 1997, 9 (5): 38
Wen Teng,Cao Yacheng,ZhangWang YiYi,Wait..Determination of ammonium and nitrate nitrogen by diffusion method15NA review of stable isotope studies[J].Soil, 2016, 48 (4): 634-640
Cao Yacheng,Zhong Ming,Gong Hua,Wait.. N2.ODetermination of inorganic nitrogen in soil by Production Method15NAbundance[J].Soil Journal, 2013, 50 (1): 113-119
Nelson d w, Bremner j m. gaseous products of nitrite composition in ILS [J]. Soil Biology & bioche-Mistry, 1970, 2 (3): 203-215
Prather r j Miyamoto S. nitric oxide sorption by calcareous soils: III. effects. temperature, lack. oxygen. capacity,. [J]. soil Science Society. America Journal 1974 38 (4): 582-585
Clark FE Beard we Smith DH. dissimilar nitrifying capacities. soils. losses. applied kg [J]. soil Science Society. America Journal 1960 24 (1): 50-54
DOI: https://doi.org/10.18686/ss.v1i1.1156
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