色谱法测定水中CHCl_3和CCl_4时标准溶液稀释方法的选择

Selection of Dilution Method for Standard Solution when Chromatography is Applied to Determine CHCl_3 and CCl_4

试验了用不同方法稀释CHCl3和CCl4的浓标准溶液。结果表明,先用甲醇,再用水两步稀释浓标准溶液为工作溶液,所得结果具有线性好、精密度和回收率均较理想的优点。

Diversified methods to dilute CHCl3 and CCl4 standard solution are tested.It indicates that when methanol is first used and then standard solution is diluted in two steps to working solution,the result has the advantages of good linearity and comparatively ideal precision and recovery rate.