standard acid

Determination of dehydroacetic acid and sorbic acid and benzoic acid in food by gas chromatography internal standard method

气相色谱内标法测定食品中防腐剂脱氢乙酸、苯甲酸和山梨酸

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At present, the domestic purification technologies of industrial boric acid and borax have a certain gap for preparation of nuclear grade boric acid and borax for high-borosilicate glass. Impurity content is obviously higher than standard or required.

目前国内对工业硼酸、硼砂的纯化技术距离制备核工业级硼酸和高硼硅酸盐玻璃用硼砂还有一定差距，杂质含量达不到要求。

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Benzene-methanol-acetic acid ( 5:0.8:0. 1) was used for Radix Aristolochiae with crude drug standard as reference.

青木香的薄层色谱鉴别采用青木香为对照药材，以苯-甲醇-冰醋酸（5：0.8：0.1）为展开剂。

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Discussion on Standard Curve-protracting in Determining White Spirits'Methanol through Fuchsin Sulfurous Acid

品红亚硫酸法测定酒中甲醇的标准曲线绘制法的探讨

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APPLICATIONS OF A.C. OSCILLOGRAPHIC POLAROGRAPHY ⅰ. Determination of Pb in Pure Hydrochloric Acid ( Internal Standard Method)

交流示波极谱法在痕量分析中的应用Ⅰ.纯盐酸中痕量铅的测定（内标法）

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Standard Test Method for Resistance of Porcelain Enameled Utensils to Boiling Acid

搪瓷器皿耐沸腾酸腐蚀的试验方法

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Preparation of Anisic Acid to used as a Standard Reference Material for Elemental Organic Analysis

有机元素微量分析标准物质&茴香酸的研制

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Preparation and Quality Standard of Oleanolic Acid Drop Pills

齐墩果酸滴丸的制备及质量标准研究

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According to foreign analysis standard, the isotachophoresis analysis method of chloroacetic acid was set up.

依照国外有关分析标准, 建立了车间氯乙酸中控及产品的等速电泳分析方法.

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The Cd and Pb contents in alfalfa stem and leaf exceeded the forage health standard, and the pollutant contents in tree were also increased in all treatments, which was even more serious in acid and neutral soils.

苜蓿茎叶中Cd、Pb含量超出饲料卫生标准，树叶中含量也有所增加，在中、酸性土壤上尤甚。

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Sodium oxide content is determined by the consuming amount of the improved standard acid.

氧化钠的含量是用改进的标准酸消耗量方法测定。

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