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1)  low molecular weight amines
低分子量有机胺
1.
In this paper the retention behaviors of low molecular weight amines (methylamine, dimethylamine, trimethylamine, ethylamine, propylamine sec butylamine, n butylamine, ethanolamine, diethanolamine, triethanolamine) on Ionpac CS 12 column were for the first time studied with modern ion chromatograph.
首次应用CS12分离柱对10种低分子量有机胺的离子色谱法进行了研究。
2)  low molecular weight organic acids
低分子量有机酸
1.
Determination of eight kinds of low molecular weight organic acids in Aloe and Aloe′s drink by HPLC;
HPLC法测定芦荟及芦荟饮料中的低分子量有机酸
2.
The phytotoxicity of low molecular weight organic acids(C2-C5) was assayed by acute Triticum aestivum assay.
采用小麦种子为受试物,通过种子萌发抑制试验对低分子量有机酸(C2-C5)的急性毒性进行评价,并结合液液萃取和减压蒸馏的方法考察低分子量有机酸对沥滤液总体生物毒性的贡献。
3.
In order to study the effect of LMWOAs on plants growth and soil fertility better,now based on physical and chemical properties of a variety of low molecular weight organic acids,a method called RP-HPLC is established to mensurate low molecular weight organic acids.
针对植物根系分泌低分子量有机酸是活化土壤难溶性矿物质养分的重要物质,对土壤性质及土壤物质转化有重要影响等问题,采用试验方法,根据各种低分子量有机酸的理化性质,建立了低分子量有机酸反相高效液相色谱测定方法。
3)  low-molecular-weight organic acids
低分子量有机酸
1.
Influence of three low-molecular-weight organic acids on the release behavior of HCHs from red soil;
三种低分子量有机酸对红壤中HCHs释放行为的影响
2.
Effect of low-molecular-weight organic acids on potassium release from purple rocks;
低分子量有机酸对紫色母岩中钾释放的影响
3.
5 μmol/L)or at high Mn2+ supply level(10 μmol/L),the Mn2+ accumulation and Mn2+ translocation rate at both shoots and roots,and the contents of Mn2+ and low-molecular-weight organic acids at both xylem and phloem sap were significantly higher in L.
结果表明,无论在高锰还是低锰条件下,白羽扇豆植株地上部和根系的锰吸收和转运能力、木质部和韧皮部汁液中的锰含量及低分子量有机酸含量在不同生长阶段都显著高于窄叶羽扇豆,且2种羽扇豆植株韧皮部汁液中锰含量与其低分子量有机酸含量呈显著正相关。
4)  Low molecular weight organic acid
低分子量有机酸
1.
Effects of low molecular weight organic acids on Acidithiobacillus ferrooxidans;
低分子量有机酸对氧化亚铁硫杆菌影响
2.
The effect of four low molecular weight organic acids on the adsorption of fluoride on soils with variable charge was investigated with a batch method.
用一次平衡法研究了四种低分子量有机酸对几种可变电荷土壤吸附氟的影响 ,结果表明 ,低分子量有机酸可以通过竞争吸附作用抑制土壤对氟的吸附 ,化学结构相对简单的草酸和丙二酸对氟吸附的抑制作用大于柠檬酸和苹果酸 。
3.
The low molecular weight organic acids(LMWOAs) in rhizosphere soil,bulk soil,root and leave of cabbages were extracted and derived by the mixture of methanol and sulfuric acid(10∶7).
利用甲醇-硫酸混合液(体积比10∶7)对土壤和白菜中低分子量有机酸同时进行提取和甲酯化衍生,然后利用二氯甲烷液-液萃取,气相色谱法分析。
5)  low-molecular-weight organic acid
低分子量有机酸
1.
Effects of low-molecular-weight organic acids on soil phosphorus release
低分子量有机酸对土壤磷活化影响的研究
2.
The content of fluoride in tea leaves is related closely with both the adsorption characteristics and the form distribution of fluoride in tea garden soils, which may be affected by the interaction of Al-F, phosphate and low-molecular-weight organic acids.
本文通过实验室模拟实验研究了不同茶园土壤氟的吸附动力学特征和吸附热力学特征,铝(不同氟铝比为2F/Al、4F/Al、8F/Al)、磷酸根和低分子量有机酸(草酸、柠檬酸、苹果酸、丁二酸)(浓度为1mmol/L和10mmol/L)分别存在和共存下对茶园土壤氟吸附特征的影响。
6)  low molecular weight organics
低分子量有机物
补充资料:有机胺
分子式:
CAS号:

性质:又称烷基胺,有机胺。是一类以氮原子为萃取功能基的萃取剂的总称,包括伯胺RNH2、仲胺R2NH、叔胺R3N及季铵盐R4N+X-等四种。作为萃取剂的烷基胺的相对分子质量通常在250~600之间。它们对金属离子的萃取属阴离子交换或离子缔合机理。伯、仲、叔胺属于中等强度的碱性萃取剂,在酸性介质中必须先与氢离子(H+)后,才能萃取如FeCl4_、CoCl42-、ZrO(SO4)22- 和UO2(SO422-等金属络阴离子。季铵盐为强碱性萃取剂,本身含有铵阳离子R4N+,所以既可由酸性或中性溶液中萃取,又可由碱性溶液中萃取,如由碳酸盐溶液中萃取UO2(CO334-络阴离子。

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