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A sensitive HPLC method for the simultaneous determination of diniconazole, thiram and imidacloprid from the mixture was developed. YWG C18 column saved as solid phase and CH3OH-H2O as mobile phase. Detection wavelength was set at 260 nm and quantitative analyzing was performed with an external standard method.

采用反相高效液相色谱法,使用YWG C18柱和二极管阵列检测器,以甲醇-水为流动相,检测波长260 nm,用外标法测定了福美双吡虫啉烯唑醇悬浮种衣剂中3种成分的含量。

The results indicated that the optimum formula of 30% imidacloprid suspension concentrate were as follows: imidacloprid 30%, dispersant NNO 2%, emulsifier 2% 400(superscript #, xanthic gum 0.1%, silica 1%, glycol 5%, fill water to 100%.

结果表明,30%吡虫啉悬浮剂的较佳配方为:吡虫啉30%,扩散剂NNO 2%,乳化剂4002%,黄原胶0.1%,白炭黑1%,乙二醇5%,水补足至100%。

It is easy to absorb the moisture, and can be soluble by absorbing the water in the air. The water-free Zinc Chlorideis easily soluble in water. It is soluble in ethanol ,acetone and

易吸潮,能自空气中吸收水分而溶化,氯化锌水合物有1、2、3、4个结晶水,无水氯化锌极易溶于水中,能溶于乙醇、丙酮和丙三醇中,具有腐蚀性,并具有使纤维素润胀的性质,有毒性,灼热时,有浓厚白烟生成。

The results indicated that the optimal technique of distilling of hawthorn beverage was hawthorn ∶water=1 ∶6,heated under 8590℃for 30min and infused for 3 hours ; the optimal sweetener formula compound of the beverage was determined as follows: xylitol 5 %,aspartame 0.6‰,sodium cyclamate 0%,acesulfame potassium 0.12‰.

结果表明,山楂饮料浸提的最佳工艺为:山楂水为1∶6,加热温度8590℃,时间30min、浸渍3h;最适甜味剂配比为:木糖醇5%,蛋白糖0.6‰,甜蜜素0.0‰,安赛蜜0.12‰。其制品糖酸适口、风味浓郁、营养丰富。

Methods The different extractions of astragalus root under different concentrations of ethanol and temperatures were compared.

采用紫外分光光度法测定黄芪皂苷、多糖含量,比较不同乙醇浓度、温度对水提和醇提黄芪的影响。

in the appropriate pH, temperature and mixing conditions, the use of ethanol and propylene glycol is water soluble Ginsenoside effective way to help dissolved.

在适当pH值、温度和搅拌条件下,使用乙醇和丙二醇是人参皂苷水相溶解的有效助溶方法。

ABSTRACT: In the presence of sodium t-butoxide and DMSO,ethyl 2-oxocyclopentanecarboxylate was subjected to C-alkylation with 2-(4-bromomethylphenyl)propanoic acid with high regioselectivity to give 2-[4-(1-ethoxycarbonyl-2-oxo-1-cyclopentanylmethyl)phenyl]propanoic acid (4) which was followed by hydrolysis,decarboxylation and salt formation to afford loxoprofen sodium in about 72% overall yield.

在叔丁醇钠和二甲基亚砜的存在下,2-丙酸对2-乙氧羰基环戊酮进行C-烷基化,再经水解脱羧,成盐即得洛索洛芬钠,以2-丙酸计算,总收率为72%。

The results showed that the absorption capability of ethylene glycol was improved when water was added into pure ethylene glycol.

对不同浓度、不同温度下乙二醇-水体系吸收羰基硫气体的能力实验进行了考察。

The compositions of ethyl acetate fraction, normal butyl alcohol fraction, and water fraction differed significantly.

通过GC-MS和HPLC分析,黑米抗氧化提取物的石油醚部和氯仿部成分以脂肪酸为主,乙酸乙酯部、正丁醇部和水部之间成分构成差异较大。

The result shows that optimized formula: triazophos is 30%; butyl alcohol is 1%~3%; xylene is 3%~5%; DMF is 3%~5%; emulsifier 500(superscript #, NPEPO4, 1602(superscript #) and 400(superscript #) is 17%~20% and water else.

结果表明,优化的配方为:三唑磷30%,丁醇1%~3%,二甲苯3%~5%,二甲基甲酸胺3%~5%,乳化剂(500、NPE-PO4、1602和400按一定比例混合)17%~20%,水余量。

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