This article introduces a new type of detergent TS-198, which is specially suitable for processing sand filter material containing graphite and greasy dirt in filter tank.
作者介绍了一种专门适用于处理含石墨及油污的过滤器砂滤料的清洗剂TS— 1 98。
Trace amount of iron in atmospheric particulate matter has been directly deter-mined by graphite probe furnace atomic absorption spectrometry after collection with agraphite probe filter.
采用一定规格的石墨探针直接收集大气微粒物质，并采用原子吸收光谱法测定其中的痕量铁。
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