CAJ | 학술논문

目的了解便携式X射线荧光光谱仪测量滤膜铅的性能指标,为其用于测定工作场所空气中的铅含量提供数据依据.方法通过X射线激发铅元素,激发态铅原子返回基态的过程中,发射特征X射线荧光,以荧光的能量和波长定性,以荧光强度定量,完成对铅元素的快速检测.在设定的仪器条件下,通过测量定制的系列浓度铅标定滤膜,制作标准曲线,完成对滤膜铅的定量分析.结果便携式X射线荧光光谱仪测定滤膜铅含量,回归方程:y=0.004x-0.182,决定系数为0.999 9,线性范围对应浓度为0.00～10.40 mg/m3,最低检出浓度为0.53 μg/m3,测定下限为1.76 μg/m3,不同浓度样品测量批内精密度相对标准偏差(RSD)为0.48％～6.22％,批间精密度RSD为2.51 ％～5.09％,准确度测量结果在标准样品的标定范围内.结论便携式X射线荧光光谱仪测定滤膜铅样本操作简便,检测快速,结果重现性好,准确度高.
목적 료해편휴식X사선형광광보의측량려막연적성능지표,위기용우측정공작장소공기중적연함량제공수거의거.방법 통과X사선격발연원소,격발태연원자반회기태적과정중,발사특정X사선형광,이형광적능량화파장정성,이형광강도정량,완성대연원소적쾌속검측.재설정적의기조건하,통과측량정제적계렬농도연표정려막,제작표준곡선,완성대려막연적정량분석.결과 편휴식X사선형광광보의측정려막연함량,회귀방정:y=0.004x-0.182,결정계수위0.999 9,선성범위대응농도위0.00～10.40 mg/m3,최저검출농도위0.53 μg/m3,측정하한위1.76 μg/m3,불동농도양품측량비내정밀도상대표준편차(RSD)위0.48％～6.22％,비간정밀도RSD위2.51 ％～5.09％,준학도측량결과재표준양품적표정범위내.결론 편휴식X사선형광광보의측정려막연양본조작간편,검측쾌속,결과중현성호,준학도고.
Objective To investigate the performance index of portable X-ray fluorescence spectrometer in the determination of lead on filter membrane and to provide data for the determination of lead in workplace air.Methods Irradiated with X-ray,the lead wou ld emit speeifie X-rav fluorescence during the process from the excited state back to the ground state.Rapid determination of lead was completed using fluorescence energy and wave length for qualitative analysis and fluorescence intensity for quantitative measurement.Under set conditions,a series of customized calibration samples were measured to create a standard curve for quantitative analysis of lead on filter membrane.Results The regression equ ation obtained using a portable X-ray fluorescence spectrometer to determine the lead on filter membrane was y=0.004x-0.182 (r2 =0.9999).The linear range was 0.00～10.40 mg/m3,the minimum detectable concentration was 0.53 μg/m3,and the minimum quantifiable concentration was 1.76 μg/m3.The relative standard deviation (RSD) ofwithin-run precision of samples with different concentrations was 0.48％～6.22％,the RSD of between-run precision was 2.51％～5.09％,and the degree of accuracy was in the calibration range of standard samples.Conclusion Portable X-ray fluorescence spectrometry is a simple,rapid,repeatable,and accurate method for the determination of lead on filter membrane.