F-acid

Secalonic acid F (SAF) abstract is the main allelochemical from the fungus.研究结果表明 ,日本曲霉所产生的大量黑麦酮酸F(SAF)对玉米 (Zeamays)有很强的化感作用 ,低浓度显著促进玉米幼苗生长 ,高浓度则抑制 。L23汉语字典

A fluorometric method for the determination of F~-is developed.报道了F-的荧光光谱测定法。L23汉语字典

In this paper the author (discusses) these compounds from the molecular structure, the electron-induced, the sensing properties of anions and the (selectivity of F~-.本文就可作为F- 可见光谱分析显色剂的新型超分子化合物 ,从分子结构、电子诱导、对阴离子的显色属性和对F- 选择性等方面做了评述。L23汉语字典

First,this paper points out the unusal appearance of the coordination reaction for Fe 3+ and F -.首先指出了Fe3+与F-配位反应的异常现象 ,然后进行了相应的定性实验和定量实验 ,并对Fe3+与F-反应生成FeF63 -的最佳酸度和沉淀的可能结构进行了理论分析 。L23汉语字典

Fluoride was extracted from lime dissolved in H2SO4 solution by Water Vapour Distillation.目的:建立用离子色谱测定石灰中F-含量的方法。L23汉语字典

An ion chromatographic method for the determination of fluoride and chloride in electroplate liquid was proposed.提出了离子色谱法检测电镀液中F-和Cl-的方法。