- 作者: 黃榮茂
- 作者服務機構: 行政院原子能委員會核能研究所
- 中文摘要: A simple on-line flow injection analysis pre- concentration technique has been developed. The flow injection system consisted of a 4-channel peristaltic pump, two 6-way rotary injection valves containing a microcolumn of Chelex-100 resin, and a flame atomic absorption spectrometer, allowing the determination of lead at a concentration as low as ppb. The degree of pre-concentration depended on the injected sample volume. Lead contained in NBS 1634b and other heavy oil samples was determined using the system. Samples were ashed directly in a furnace at 550.degree.C for two hours, dissolved with perchloric acid and then injected into the system. The sampling frequency also depended on the injected sample volume.
- 英文摘要: --
- 中文關鍵字: Lead; Heavy Oil; Flame Atomic Absorption Spectrometer; Flow Injection
- 英文關鍵字: 鉛;重油;火焰原子吸收光譜儀;流動注入;流動注射