reagent blank meaning in English
试剂空白试验
Examples
- The complex and the filter are dissolved in a small volume of dmso , and the absorbance of the resulting solution is measured by means of spectrophotometric method at 545nm wavelength against the reagent blank . the detection limits better than 1 . 0 u g / l can be achieved
50倍富集时，方法的检出限为0 85pg l 。以上两种方法应用于分析天然水以及矿泉水中的mo （ vi ）和的o ） ，回收率好，结果满意。 - In the boron medium of ph = 4 . 5 , the complex of mo ( vi ) - ars - cpc , can be collected on nitrocellulose membrane . the complex and the filter are dissolved in a small volume of dmso , and the absorbance of the resulting solution is measured by means of spectrophotometric method at 490 nm wavelength against the reagent blank . the detection limits better than 1 . 2ug / l can be achieved
5的hac寸aac缓冲溶液中， mo （ vi ）与酋素红s （ ars ）以及澳代十六烷基毗陡（ cpc ）形成的三元络合物能够被硝化纤维微孔滤膜定量富集，富集膜溶解在小体积的二甲亚矾中，于490run处以试剂空白为参比测定吸光度。 - Abstract : the method of using formaldehyde buffer solution a b sorption - hydrochloric pararosaniline spectrophotometry to determine sulfur diox ide in air has higher sensitivity and good selectivity , and prevents from adoptin g mercurial absorbent . but the conditions in lab are not well controlled , the v alue of reagent blank and standard curvilinear slope can ' t accord with the one s tipulated in “ methods for air and waste gas monitoring and analysis ” . some opra tional techniques for so2 determination in lab are introduced for reference
文摘:以甲醛缓冲溶液吸收-盐酸副玫瑰苯胺分光光度法测定空气中的二氧化硫，方法灵敏度高，选择性好，避免了使用含汞的吸收液，但如果实验条件控制不好，试剂空白值及标准曲线的斜率就会不符合《空气和废气监测分析方法》中规定的值，本文着重从操作技巧方面对二气化硫测定的实验室质量控制进行分析，仅供参考。