气相色谱-质谱联用技术测定水中油

本文综述了近年来用气相色谱法测定水中油的技术进展。引用文献13篇。     

水平式感耦等离子发射光谱氢化法测定岩石中痕量锑铋的研究

国外已经发表很多有关感耦等离子发射光谱测定一些易生成氢化物元素的新方法,但到目前为止,国内很少报导氢化法在发射光谱中的应用,本文描述了一种新型、简便的氢化物发生器。研究了大约20多种金属离子的干扰情况。本法和常规气动雾化法比较,检出限至少降低了一个数量级,并成功地用于岩石中痕量锑铋的测定。     

SELECTION OF PURE LINE OF MAIZE (Zea mays) BY ANTHER CULTURE AND OBSERVATIONS ON ITS HYBRIDS

Pure Lines of Maize valuable in agricultural production could be bred by anther culture. It has been proved by our work that the pure lines obtained by such means are the same as those by conventional inbreeding method. However, the time for breeding is remarkably shortened. So a new and effective way is shown for maize breeding.