用电子能谱法研究代森锰锌的结构

Studying the structure of mancozeb by an electronic energy spectrum method

代森锰锌不同的结构和命名问题值得研究。为此,用x-光衍射仪和扫描电子显微镜扫描,并用金相显微镜测定粉碎前后代森锰锌样品的颗粒尺寸。测得Zn/Mn比值存在统计学上的显著差异。此外在未经粉碎的代森锰锌样品表面Zn/Mn比值比粉碎后的低。代森锰锌不是锌和锰的定组成化合物。代森锰锌可能是一个处于非平衡状态的固溶体;母体是代森锰,锌离子在代森锰晶格中取代锰离子。因此作者用Mn1-xZnx(EBDTC)表示代森锰锌。

Investigation is needed into the structure and naming of mancozeb. An X-ray diffractometer, scanning electron microscope, and metalloscope were used to determine granule size of a mancozeb sample both before and after sample grinding. Differences in Zn/Mn ratios were statistically significant and the Zn/Mn ratio on the surface of unground mancozeb samples was lower than that of ground samples. Thus mancozeb must not be a Zn and Mn compound of definite composition. Rather, mancozeb may be a solid solution in a state of non-equilibrium with maneb as the matrix and Mn^2＋ ions substituted by Zn^2＋ ions in the maneb lattice. Hence, mancozeb is herein expressed as Mn1-xZnx （EBDTC）.