样品铣削技术对火花源原子发射光谱法测定精度的影响研究

Study on the influence of sample milling technique on the determination precision of spark source atomic emission spectrometry

研究了样品铣削技术对火花源原子发射光谱法测定精度的影响。通过采用火花源原子发射光谱分析法考察铣削深度、铣削转速、进给量3个关键铣削参数对不同成分含量样品分析精度影响试验,确定了生铁和低、中、高碳钢分析样品制备工序最佳的铣削技术参数范围为铣削深度不小于0.30mm,铣削转速和进给量分别在300～900r/min和200～800mm/min范围。实验结果表明,在上述参数范围铣削的不同碳含量样品,光谱分析结果的精度都比磨制制样好,能满足日常分析检测的需求。

This paper studied the influence of sample milling technique on the determination precision of spark source atomic emission spectrometry.The influence of three critical milling parameters including milling depth,milling speed and feed rate on the determination precision for samples of different compositions was investigated with spark source atomic emission spectrometry,and the optimum milling parameter scope in the treatment of pig iron and low,medium,high carbon steel analytes was determined as milling depth being no less than 0.30 mm,and milling speed and feed rate being in the ranges of 300-900 r/min and 200-800 mm/min,respectively.Experimental results showed that when samples of different carbon contents were treated within the above ranges of milling parameters,the accuracy of spectral analysis results was all better than those for the sample prepared by the grinding technique and could meet the requirements in daily detection.