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本文研究了硅对钙、锰的干扰情况。通过大量实验,得到干扰规律方面的初步结果。它不仅说明了当存在化学干扰时,标准加入法有时是有问题的,而且也提供了与磷、钛对钙的干扰规律不同的重要一例。如硅虽然使锰的吸光度下降,但采用标准加入法时,仍然可以准确测定。这就预示我们,其干扰规律和干扰机理是非常复杂的。 (一)仪器及试剂 1.仪器及测定条件:SP1900原子吸收分光光度计,狭缝0.2毫米,空气流量5.0升/分,乙炔流量1.2升/分,P-ECa-Mg空心阴极灯(波长422.7毫微米),
This paper studies the interference of silicon on calcium and manganese. Through a large number of experiments, the preliminary results of the interference law are obtained. It not only shows that when there is chemical interference, the standard addition method is sometimes problematic, but also provides an important example of the different interference rules of phosphorus and titanium to calcium. Although the silicon, manganese, although the decline in absorbance, but the use of standard addition method, can still be accurately measured. This indicates that we, the law of its interference and interference mechanism is very complicated. (A) Instruments and reagents 1. Instruments and determination conditions: SP1900 atomic absorption spectrophotometer, slit 0.2 mm, air flow 5.0 l / min, acetylene flow 1.2 l / min, P-ECa-Mg hollow cathode lamp Nm),