石油醚

By steam distillation and petroleum ether extraction,respectively,and the chemical constituents of the volatile oils were analyzed and identified by GC-MS.

分别采用水蒸气蒸馏和石油醚萃取法提取白花茵陈中的挥发油，并通过GC-MS对其化学成分进行了分析鉴定。

Methods Less toxic solvents such as cyclohexane, n-hexane, petroleum ether and chloroform were compared with benzene and toluene.

用毒性较小的溶剂环己烷、正己烷、石油醚和三氯甲烷等取代苯或甲苯。

The results showed that the optimal process was degreasing treatment with petroleum ether, dialysis for 48 h, the content of protein was 93.70%.

研究表明：鸡肉干燥粉直接进行石油醚脱脂和透析48 即为鸡肉蛋白的最佳提取工艺，其蛋白质含量可达到93.70%。

Insol in cold water, petroleum ether, ether, benzene and chloroform.

不溶于石油醚、乙醚、苯和氯仿等非极性溶剂。

Soluble in diethyl ether, petroleum ether and other unpolar solvents., insoluble in water

能溶于乙醚、石油醚等非极性溶剂，不溶于水。

Using petroleum ether as defatted solvent, there did not affect the analysis of flavonoid.

以石油醚作为蜂胶奶粉前处理之溶剂，不会影响到测试结果。

The properties of light fractions (including naphtha, jet fuel and light hydrogenated lube base oil) from the 300 kt/a lube isodewaxing unit of SINOPEC Shanghai Gaoqiao Company were reviewed and a proposal for optimizing utilization of these fractions was presented, such as producing AR petroleum ether from naphtha; superior odorless kerosene and rolling oil of aluminum foil from jet fuel fraction; transformer oil, high quality white oil and jelly wax from light base oil fraction.

对中国石化上海高桥分公司300kt/a润滑油异构脱蜡装置生产的石脑油馏分、喷气燃料馏分及轻质加氢基础油性质进行试验分析，提出合理的利用方案，其中石脑油馏分可生产分析纯石油醚，喷气燃料馏分可生产特种煤油与铝箔轧制油，轻质加氢基础油可生产变压器油、高档白油以及果冻蜡。

Light oil, ferrocene, EPA light hydrocarbon, dimethyl ether, xylene, acetone, hydroquinone, potassium permanganate, petroleum ether, naphtha, thiol, butane, sodium hydroxide , synthesis gas reactor

轻质油，二茂铁，轻烃碳五，二甲醚，二甲苯，丙酮，对苯二酚，高锰酸钾，石油醚，石脑油，硫醇，丁烷，氢氧化钠，合成液化气反应罐

By using phenylfluorone photometer analysis,solution of germanium content in 2-octanol and petroleum was measured.

本文采用苯基荧光酮分光光度法测定仲辛醇/石油醚溶液中锗的含量。

Methods The activitie of anti-lipidperoxidation of Chinemys Plastrum Testudinis of petroleum-ether, acetoacetate and 95% alcohol solution from two producing areas was studied by DPPH.

方法采用DPPH法分别测定两种不同产地龟板的石油醚、乙酸乙酯、95％乙醇等不同极性溶剂提取物的抗氧化活性。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。