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一、仪器测定结果不稳定。1.火焰光度计检测离子火焰的质量,会直接影响检测结果,引起火焰不足或者颜色不纯甚至全部变黄的原因有以下几点: ①煤气 煤气质量不好或煤气不足。应加以更换。 ②火焰喷头上沾有污物 用细针将燃烧喷嘴上的八个圆孔依次捅净,并用蒸馏水加以擦洗。 ③空气压缩机没有及时排气 空气压缩机在使用期间要定期排放储气罐积水(冬季可半月一次,夏季根据空气相对湿度,一般应在三天左右排放一次),否则在测定时,会影响空气压力,及至影响火焰的正常。 2.标准液 标准液是打开以后经稀释方能应用。一般情况下,稀释好的标准液只能保存3—7天(冬季可稍长),超过这个时间则可能失效,如果人为地将它
First, the instrument measurement results are not stable. 1. The flame photometer detects the quality of the ion flame, which will directly affect the test results. The reasons for the lack of flame or impure or even yellowish color are as follows: 1 Gas The gas quality is poor or the gas is insufficient. Should be replaced. 2 Dirty stains on the flame sprayer Clean the eight round holes on the combustion nozzle with a fine needle and clean them with distilled water. 3 The air compressor is not exhausted in time. During the use of the air compressor, it is necessary to periodically discharge the accumulated water in the air tank (half a month in winter, and according to the relative humidity in the air in summer, it should normally be discharged in three days or so). Otherwise, it will be measured. Affects air pressure and affects the normal flame. 2. Standard solution The standard solution can be applied after dilution. In general, the diluted standard solution can only be stored for 3-7 days (when the winter can be slightly longer), more than this time may be invalidated if artificially