Discussion on the Mensuration of Formaldehyde Content Determination of organic nitrogenous compounds by formol method 甲醛法测定有机氮化物的含量
The effects of bacteria on the carbonaceous organic material and nitrogenous organic material are discussed according to the species and quantity of bacteria, and concentration of organic matter and inorganic matter in the sediment-water interface. 通过底质-水界面细菌种类、数量、有机物和无机物的含量来判断细菌对含碳源、氮源的有机物的作用。
Test of 2130 Phenolic Resin-FRP Resistance to Chemical Substance A QUANTUM CHEMICAL STUDY OF CORROSION INHIBITION OF SOME ORGANIC NITROGENOUS COMPOUNDS 2130酚醛玻璃钢耐化学药品性试验某些含氮化合物缓蚀作用的量子化学研究
Use of Modified Natural Organic Substance SE 92 in Water Treatment in Nitrogenous Fertilizer Plants 改性天然有机物SE-92在氮肥厂水处理中的应用
Optimal Application Amount of Nitrogenous, Phosphoric and Organic Fertilizers and Timing of Nitrogenous Fertilizer on Corn in the Gully Regions 沟川地玉米氮磷有机肥适宜用量及施氮时期的研究
The effects of plankton on the enrichment of organic matter, trace metals, nitrogenous and phosphoric nutritious salts in the sea surface microlayer are analyzed comprehensively. 本文综合分析了浮游生物对有机物、痕量金属、氮磷营养盐在海洋微表层中富集所起的作用。
Ammonia 、 nitrite and organic nitrogenous compound are oxidized to nitrate by the oxidant potassium persulfate in alkaline medium at temperature of 120 ℃-124 ℃. Most of organic compound are oxidized at the same time. 在120℃~124℃的碱性介质条件下,用过硫酸钾作氧化剂,将水样中氨(铵)、亚硝酸盐以及有机氮化合物转化为硝酸盐,并且在此过程中大部分有机物也同时被氧化分解。
It was clear that the leaching loss rate of the mixed application of inorganic nitrogenous fertilizer and organic fertilizer was larger than that of only inorganic nitrogenous fertilizer and the morphology of the leaching loss was mainly nitric nitrogen. 明确了配施有机肥比化学氮肥单施氮素淋失率大,且淋失的形态均以NO3-N为主。
Study on the Properties of Catalyst for Deep Oxidation of Organic Nitrogenous Compounds 含氮有机物深度氧化催化剂&PCN-1型性能的研究
The decomposition of nitrogenous and phosphoric organic substances by bacterioplankton is probably an important reason for the enrichment of nitrogenous and phosphoric nutritious salts. 浮游细菌对微表层中富集的含氮和含磷有机物的分解可能是促成氮磷营养盐在微表层中富集的重要原因。
Model base system included four submodel which were respectively organic matter mineralization model, nitrification-denitrification model, nitrogenous leaching and fertilizer transform model. 包括4个子模型,即有机质矿化模型、硝化&反硝化模型、氮素的淋沈及肥料转化模型。
The water of reservoir is poor in dissolved salts but rich in organic material and nitrogenous substances, The average biomass of phytoplankton is 3.44 mg/ 1, in which both Bacillariophyta and chlorophyta predominated. 1)库水含盐量很低,但有机质和氮的含量较高。浮游植物生物量平均3.44mg·L~(-1),以硅藻和绿藻占有优势。
The main reason for the improvement of pH value is the transformation of organic nitrogenous into NH4+-N. In this process, the H+ was consumed largely. 此时土壤pH值提高的主要原因是秸秆所含有机氮矿化为铵态氮,消耗了氢根离子。
Compared with the organic nitrogenous, the microorganism is favor to using inorganic nitrogen as N source. 与有机氮相比,降解柴油的微生物更倾向于利用无机氮作为生长的N源。
As the decomposition of organic nitrogenous, the concentration of NH4+-N increased. 随着秸秆分解的程度加深,土壤中铵态氮的含量增加,土壤硝化势增强。