Discussion on Chemistry Teaching in Accessory School of Nanjing Institute of P.E
Usually only a few students in accessory School of Nanjing Institute of P.E can pass the Chemistry tests, because they have the heavy physical training task and a little time for the culture study. Meanwhile, their elementary cultural knowledge is very poor. The paper delves into several aspects relating the importance of chemistry study, teaching appreciation, chemistry experiments, the teaching pattern of explaining and practicing, searching chemistry teaching and the development of students’ potentiality. So if the ideal and high quality wants to be achieved, one special teaching method for students seems to be very important and necessary.
Flow Injection (FI) techniques for use with Atomic Absorption Spectrometry (AAS) ::: have attracted considerable research interest for sample introduction and calibration ::: strategies. The interest continues in on-line preconcentration and matrix modification ::: which are carried out by the incorporation of liquid-liquid extraction, ion-exchange, ::: immobilised reagents, gas/vapour generation and continuous precipitation-filtration ::: devices into suitably designed manifolds. Indirect determination of inorganic anions and ::: organic compounds is becoming routine by FI–flame AAS. The direct analysis of solid ::: samples, which is a shortcoming of flame AAS, was recently carried out by on-line ::: electrolytic dissolutions. [Continues.]