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1)  extractant [iks'træktənt]
提取剂
1.
Selection of the extractants for available rare earths in soils.;
土壤中有效态稀土元素提取剂的选择
2.
The Study of Extraction Method for Available Copper and Cadmium in Acidity Soil with Different Extractants
不同提取剂提取酸性土壤有效态Cu和Cd的方法研究
3.
By comparing the extractants ability as well as analyzing the relationship of available fluoride contents and soil properties,1.
01mol/L CaCl2和H2O四种提取剂对污染土壤中元素氟的提取能力的分析比较,以及土壤性质与提取量的相关分析,确定了1。
2)  extractants
提取剂
1.
Comparative studies on available Se extractants for acid paddy soils;
酸性水稻土有效硒提取剂的比较研究
2.
Furthermore, extracting mechanisms and the elements that affect the extracting ability of extractants were compared and analysed.
在此基础上,评价了各类提取方法的特点及其在应用上的优势和局限,指出了筛选通用提取剂的原则和依据。
3.
Comparison and selection of active nickel extraction from soil by four extractants(H2O,HCl,CaCl2 and DTPA) were conducted at different temperature,with various extracting time and a few ratio of soil to extractant.
结果表明,提取温度25~30℃范围内,Ni提取量除HCl外无明显变化,随着平衡时间的延长和土液比的减小,Ni提取量呈增加趋势;不同提取剂提取有效态Ni量与植物Ni吸收量均达显著和极显著正相关,与生物量呈显著或极显著负相关,较好地反映出植物Ni危害状况。
3)  Extraction [英][ɪk'strækʃn]  [美][ɪk'strækʃən]
提取剂
1.
Two experiments were designed to estimate the potential N mineralization including a chemical extraction exper.
本文以黄土高原西部5龄和9龄紫花苜蓿草地为研究对象,(1)比较了热水、KCl和CaCl_2三种提取剂提取土壤矿质氮(硝态氮和铵态氮)的能力;(2)采用温室培养法研究了土壤起始矿质氮、施加外源氮肥和植被覆盖对紫花苜蓿草地土壤有机氮矿化的影响。
4)  extracting agent
提取剂
1.
The synthetic technology of Neville acid has been improved by using precipitating agents and extracting agents.
用沉降剂和提取剂改进了尼文酸的生产工艺,消除了二氧化硫对环境的污染,提高了产品纯度,收率达90%。
5)  solvent extraction
溶剂提取
1.
Study on extracting flavor effective component of artemisia argyi with solvent extraction and supercritical fluid extraction;
超临界CO_2和有机溶剂提取艾蒿叶中风味物质的研究
2.
Objective:To optimize the solvent extraction of Rhubarbs.
目的:优选大黄溶剂提取工艺。
3.
The technology of solvent extraction of Haoxian oily sludge is studied.
用溶剂提取法对胜利油田郝现联合站高含油罐底泥进行处理,得到最佳萃取剂及提取的最佳温度、剂泥质量比、提取次数等条件,使含油污泥中油提取率可达99。
6)  extraction solvent
提取溶剂
1.
The extraction solvent was also optimized.
同时对提取溶剂加以改进,采用NaCl-水-甲醇(10%:70:30)作为提取溶剂的提取效率最高。
2.
Effects of different extraction solvents(100% methanol,80% methanol,80% ethanol,80% acetone and water) on the total polyphenol yield and antioxidant activity of barley were studied.
研究了体积分数100%的甲醇、体积分数80%的甲醇、体积分数80%的乙醇、体积分数80%的丙酮和水等5种不同提取溶剂对大麦游离多酚和结合多酚提取率的影响,以及不同溶剂提取物清除DPPH自由基能力的差异。
3.
The present study clearly demonstrated the effects of extraction solvent mixtures on antioxidant activity evaluation and their extraction capacity and selectivity for free phenoli.
本文阐明了提取溶剂对大麦抗氧化力评价的影响,并系统研究了不同的提取溶剂对大麦中游离酚类化合物的提取能力和选择性。
补充资料:锶、铯无机离子交换剂提取
分子式:
CAS号:

性质:由高放废液提取放射性90Sr和137Cs的方法。亚铁氰化物,磷钼酸铵,磷酸锆,磷酸钛等可从酸性高放废液中吸附回收铯,锑酸可从高达7mol/L的硝酸溶液中吸附锶。这些无机离子交换剂在反复吸附解吸过程中强度变差以及锶和铯的解吸困难,使它们不大适合于工业应用。对于接近中性的放射性废液,可以用丝光沸石吸附铯,用水合氧化钛吸附锶。吸附后的交换剂可直接灼烧成热稳定性高和浸出率低的似矿物质。

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